dispenser and oral care system

专利摘要:
DISPENSER FOR ORAL CARE. An oral care dispenser and oral care system for its implementation. In one embodiment, the dispenser may comprise a collar having an axial passageway in which a drive component is rotatably coupled. The collar comprises a segmented narrowed portion and a non-segmented body portion comprising a plurality of protrusions extending into the axial passage. The drive component comprises at least one resilient arm that interacts with the multiplicity of protrusions to generate an audible signal during relative rotation.
公开号:BR112013015203B1
申请号:R112013015203-6
申请日:2011-08-01
公开日:2020-10-20
发明作者:Eduardo J. Jimenez；Sharon Kennedy；Alan Sorrentino；John J. Gatzemeyer；Michael Rooney；Joseph E. Fattori
申请人:Colgate-Palmolive Company；
IPC主号:

专利说明:

This application claims the priority of patent application of patent cooperation treaty No. PCT / US10 / 60874, filed on December 22, 2010, which in turn claims the benefit of provisional patent application US No. 61 / 423,424, filed on December 15, 2010. The content of the above requests is incorporated into this document as a reference. FIELD OF THE INVENTION
The present invention relates generally to oral care dispensers and oral care systems. BACKGROUND OF THE INVENTION
Oral care products or agents are applied in different ways. A common technique, for example, without limitation, used for teeth whitening products is to take the impression of the impression of a person's teeth and provide a tray of the shape of this impression. A person then just has to add a whitening composition to the tray and apply the tray to their teeth. This is left in place for a period of time, then removed. After a few treatments, the teeth gradually become whiter. Another technique is to use a strip that has a bleaching composition on one surface. This strip is applied to a person's teeth and left in place for approximately 30 minutes. After several applications, the teeth are gradually whitened. Another technique is to apply a whitening composition to the teeth using a small brush. This brush is repeatedly immersed in the container during the application of the teeth whitening composition to a person's teeth. After a few treatments the teeth gradually whiten.
A problem with existing brushing techniques is that the saliva in the mouth contains the enzyme catalase. This enzyme will catalyze the decomposition of peroxides. The brush can pick up some catalase while applying some of the whitening product to the teeth and transport that catalase back into the bottle. This catalase that is now in the bottle can degrade the peroxide that is in the bottle. Another problem associated with the latter technique is that it is not suitable for use with anhydrous bleaching compositions. In this case, the brush can carry moisture from the mouth saliva to the bottle. This will have a negative effect on the bleaching composition by potentially decomposing the active ingredient peroxide. In addition, if a person always rinses the brush after use, moisture from the wet bristles will enter the bottle.
Although tray-based systems are suitable, many people do not use them due to the fact that they tend to be uncomfortable and / or uncomfortable. In addition, to use a bleaching tray, a user must keep the tray and the necessary components at hand. This not only requires additional storage space in already overcrowded bathroom cabinets, but also requires the user to remember to use the bleaching system. In addition, these tray-based systems are not conveniently portable for transport and / or travel.
In addition to the difficulties in applying some oral care products, storage is sometimes uncomfortable and inconvenient for the user. The oral care product should typically be stored separately from oral care tooth cleaning implements, such as a toothbrush, as the packaging of the oral care product and the toothbrush are generally previously treated as separate parts and distinct from an oral care regime.
A more portable, compact and convenient way for storing oral care products and for dispensing and applying these oral care products to oral surfaces is desirable. BRIEF SUMMARY OF THE INVENTION
The modalities of the present invention propose an efficient, compact and portable oral care system that combines an oral care implement such as a toothbrush with a fluid dispenser in an extremely portable and convenient housing. Advantageously, such modalities are especially suitable to facilitate transport and / or travel.
Exemplary embodiments of the present invention are aimed at a toothbrush that detachably holds a removable dispenser containing a reservoir for the fluid. In some exemplary embodiments, the oral care system includes fluid such as oral care fluid materials, or active or non-active agents that may include, without limitation, whitening materials, enamel protectors, anti-sensitivity, fluoridation, tartar protection or others of oral care. The dispenser can be detachably adapted and stored at least partially inside the toothbrush handle, so that a portion of the dispenser protrudes out of the toothbrush or forms a proximal end of the toothbrush handle to allow user access for easy dispenser removal and use. The dispenser can be completely removable from the toothbrush in certain ways, so that the user can easily apply the fluid to their teeth, then reinsert the dispenser into the toothbrush for convenient storage. In certain embodiments, the dispenser may be a pen-like component. The toothbrush can detach the dispenser in a removable, non-permanent way inside the handle, so that the dispenser can be repeatedly moved and reinserted into it. In some embodiments, the dispenser can be adapted to be filled by the user for repeated use.
In one embodiment, the invention can be an oral care dispenser comprising a housing that has a longitudinal geometric axis and an internal reservoir containing a fluid; a collar non-rotatively coupled to the housing, the collar comprising an axial passageway, a narrowed portion having an inner surface that forms a first section of the axial passage, a body portion forming a second section of the axial passage and a plurality of protuberances that extend radially inward from an internal surface of the body portion, the narrowed portion being formed by a plurality of segments protruding axially from the body portion, the adjacent segments of the multiplicity of segments being separated by an interval; a drive component rotatably coupled to the collar, the drive component comprising a first annular flange located adjacent to the distal end of the narrowed portion, the drive screw of the first annular flange extending in a first axial direction, a post extending the first annular flange in a second axial direction and through the axial passage, and at least one resilient arm extending radially out of the post in the second section of the axial passage; and the rotation of an actuator in a first rotational direction causes: (1) an elevator for axial advance along the actuation screw in the first axial direction to dispense the fluid from a dispenser orifice; and (2) the at least one resilient arm moves through the multiplicity of protuberances, the at least one resilient arm deforms when it moves over each of the protuberances in the multiplicity of protuberances and recovering an original state after having passed over each one protrusions from the multiplicity of protrusions to generate an audible signal.
In another embodiment, the invention may be an oral care dispenser comprising: a housing that has a longitudinal geometric axis and an internal reservoir that contains a fluid; a collar coupled non-rotatively to the housing, the collar comprising an inner surface that forms an axial passageway, the inner surface of the collar comprising a plurality of features spaced in circumference around the longitudinal geometric axis a coupled drive component rotationally to the collar, the drive component comprising a drive screw, a post and one or more resilient arms curved in a second rotational direction around the longitudinal geometric axis; being that the rotation of an actuator in a first rotational direction causes: (1) an elevator to advance axially along the actuation screw in a first axial direction to dispense fluid from a dispensing orifice and (2) to one or more resilient arms move over the multiplicity of characteristics, and the interaction between the multiplicity of characteristics and the one or more resilient arms prevents the actuator from rotating in the second rotational direction.
In another embodiment, the invention can be an oral care dispenser comprising a housing that has a longitudinal geometric axis and an internal reservoir that contains a fluid; a collar non-rotatably coupled to the housing comprising the collar an axial passageway, a segmented annular narrowed portion having an inner surface forming a first section of the axial passageway, a non-segmented annular body portion forming a second section of the axial passageway, and a multiplicity of protuberances extending radially into an internal surface of the non-segmented annular body portion; a drive component rotatably coupled to the collar, the drive component comprising a drive screw extending from the first annular flange in a first axial direction, a post extending from the first annular flange in a second axial direction and through the passage axial, and at least one resilient arm extending radially out of the post in the second section of the axial passage; and the rotation of an actuator in a first rotational direction causes: (1) an elevator to advance axially along the drive screw in the first axial direction to dispense fluid from a dispensing orifice; and (2) the at least one resilient arm moves over the multiplicity of protuberances, deforming the at least one resilient arm when moving over each protuberance of the multiplicity of protuberances and recovering an original state after having passed through all the protuberances the multiplicity of protrusions to generate an audible signal.
In some exemplary embodiments, any suitable fluid can be used with the embodiments and methods described herein in accordance with the present invention. Consequently, the oral care treatment system can be any type of system including, without limitation, teeth whitening, enamel protection, anti-sensitivity, fluoridation, tartar protection / tartar control and others. The invention is not expressly limited to any specific type of oral care system or fluid, unless specifically claimed.
In yet other embodiments, the invention can be an oral care system comprising: a brush; and one of the oral care dispensers already mentioned in which the dispenser is configured to be detachably attached to the toothbrush.
Other areas of applicability of the present invention will become apparent upon reading the detailed description given below. It should be understood that the detailed description and the specific examples, although indicating the preferred embodiment of the invention, are intended to be illustrative only and are not intended to limit the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS
The characteristics of the exemplified modalities will be described with reference to the drawings that follow, in which like elements are given a similar designation. The present invention will be more fully understood from the detailed description and drawings that follow, in which: - Figure 1 is a front perspective view of an oral care system that includes a toothbrush and an oral care dispenser. according to an embodiment of the present invention, in which the oral care dispenser is detachably coupled to the toothbrush in a storage state; Figure 2 is a rear perspective view of the oral care system in Figure 1; - Figure 3 is a left side view of the oral care system of Figure 1, while the oral care dispenser is fully detached from the toothbrush and in an application state; Figure 4 is a side view of an oral care dispenser according to an embodiment of the present invention; Figure 5 is an exploded view of the oral care dispenser of Figure 4; - Figure 6 is a longitudinal section view of the oral care dispenser of Figure 4 taken along the longitudinal axis B-B; - Figure 7 is an enlarged view of area VI of Figure 6 - Figure 8 is a cross-sectional view of the oral care dispenser of Figure 4 taken along line VII-VII of Figure 5; Figure 9 is a side view of the driving component of the oral care dispenser of Figure 4 according to an embodiment of the present invention; Figure 10 is a perspective view of the driving component of Figure 9; Figure 11A is a side view of the collar of the oral care dispenser of Figure 4 according to an embodiment of the present invention; Figure 11B is a top view of the collar of Figure 11 A; Figure 12A is a perspective view from below of the collar of Figure 11A; Figure 12B is a perspective view from above of the collar of Figure 11A; Figure 13 is a longitudinal sectional view of the collar of Figure 11A taken along the longitudinal axis B-B; Figure 14 is a perspective view of a drive component and a collar that can be used in the oral care dispenser of Figure 4 according to an alternative embodiment of the present invention; Figure 15 is a cross-sectional view of the drive component and the collar of Figure 14 in an operable coupling; and - Figure 15A is an enlarged view of the area XV of Figure 15. DETAILED DESCRIPTION OF THE INVENTION
The following description of the preferred embodiment (s) is simply exemplary in nature and is not intended to limit the invention, its application or uses at all.
The description of the illustrative modalities in accordance with the principles of the present invention is intended to be read in connection with the attached drawings, which are to be considered as part of the full written description. In describing embodiments of the invention disclosed herein, any reference to the direction or guidance is intended simply for the sake of convenience of description and is not intended to limit the scope of the present invention at all. Relative terms such as "bottom", "top", "horizontal", "vertical", "above", "below", "up", "down", "above" and "below", as well how its derivatives ("horizontally", "down", "up" etc., for example) should be considered as referring to the orientation that is then being described or shown in the drawings under discussion. These relative terms are given for convenience of description only and it is not necessary for the device to be constructed or operated in a specific orientation unless explicitly indicated as such. The terms such as "connected", "fixed", "connected", "coupled", "interconnected" and the like refer to a relationship in which the structures are attached or fixed to each other either directly or indirectly through intermediate structures, as well as as well as to fixed or movable or rigid connections, unless expressly described otherwise. In addition, the features and benefits of the invention are illustrated with reference to the exemplified modalities. Consequently, the invention should not be expressly limited to such exemplary modalities illustrating some possible non-limiting combination of characteristics that may exist individually or in another combination of characteristics, the scope of the invention being defined by the appended claims.
Exemplary embodiments of the present invention will now be described in relation to a possible treatment or oral care system. The modalities of the oral care system may include, without limitation, the following fluids such as oral care fluid materials including: dental whitening, antibacterial, enamel protection, anti-sensitivity, anti-inflammatory, anti-fixation, fluoridation, control of tartar / protection against tartar, flavoring, sensory, coloring and others. However, other embodiments of the present invention can be used to store and dispense any suitable type of fluid and the invention is not expressly limited to any specific oral care system or individual fluid oral care material.
Referring concurrently to Figures 1-3, an oral care system 100 is illustrated according to an embodiment of the present invention. The oral care system 100 is a compact system easy to be transported, it is autonomous and easy to use, comprising all the necessary components and chemicals necessary for the user to conduct a desired oral care treatment routine. As will be described in more detail below, the oral care system 100 in an exemplary embodiment comprises a modified toothbrush 200 having an oral care dispenser 300 arranged at least partially within its handle 210. As the dispenser 300 is located inside the toothbrush handle 210, the oral care system 100 is portable for travel, easy to use and reduces the amount of storage space required. In addition, as the toothbrush 200 and the dispenser 300 are housed together, the user is less likely to misplace the dispenser 300 and more inclined to maintain the oral treatment routine with the dispenser 300, since the brush will remind the simply highlight and apply the contents of the dispenser 300.
As discussed above, the oral care system 100 generally comprises a toothbrush 200 and the dispenser 300. Although the invention is being described in the present document with respect to the use of a toothbrush as one of the two main components of the dental care system oral care 100, it should be understood that other alternative oral care implements can be used within the scope of the invention, including tongue cleaners, tooth polishers and especially implements with handles designed especially with teeth engaging elements. In yet other embodiments, the invention may consist of the dispenser 300 itself and not include the toothbrush 200.
In certain cases, the toothbrush 200 may include teeth engaging elements that are specifically designed to enhance the effect of the fluid contained in the dispenser on the teeth. The elements that engage with the teeth may include, for example, elastomeric friction elements that assist in removing stains from the teeth and / or assist in forcing the fluid into the tubules of the teeth. In addition, although toothbrush 200 is exemplified as a manual toothbrush, the toothbrush can be an electric toothbrush in certain embodiments of the invention. It should be understood that the inventive system can be used for a variety of oral care needs designed to fill the dispenser 300 with any fluid, such as an oral care agent that achieves the desired oral effect. In one embodiment, the fluid is free of toothpaste (that is, it does not consist of toothpaste), since dispenser 300 is intended to increase and not replace the brushing regime. The fluid can be selected to complement a toothpaste formula, such as coordinating flavors, colors, aesthetic factors or active ingredients.
The toothbrush 200 generally comprises a handle 210, a narrowed portion 220 and a head 230. The handle 210 provides the user with a mechanism by which he / she can easily grasp and manipulate the toothbrush 200. The handle 210 can be formed having different shapes, sizes and materials and can be formed by a variety of manufacturing methods which are known to those skilled in the art. It is preferable that the cable 210 can accommodate the dispenser 300. If desired, the cable 210 may include a suitable textured grip made of soft elastomeric material. The cable 210 can be of monoblock construction or have multiple components. The cable 210 extends from a proximal end 212 to a distal end 213 along a longitudinal geometric axis A-A. An axial cavity (not shown) is formed inside the cable 210. An opening 215 is provided at the proximal end 212 of the cable 210 that provides a passage into the cavity through which the dispenser 300 can be inserted and removed. Although opening 215 is located at the proximal end 212 of cable 210 in the exemplified embodiment, opening 215 can be located in other positions on cable 210 in other embodiments of the invention. The opening 215 may be located, for example, on a longitudinal surface of the cable 210 (on the front surface, on the rear surface and / or on the side surfaces, for example) and be elongated to provide sufficient access to the cavity 280.
Cable 210 transitions to the narrowed portion 220 at distal end 213. Although the narrowed portion 220 generally has a smaller cross-sectional area than cable 210, the invention is not limited to such a feature. Generally speaking, the narrowed portion 220 simply constitutes the transition region between the cable 210 and the head 230 and can be considered in conceptual terms as a portion of the cable 210. In this way, the head 230 is connected to the distal end 213 of the cable 210 (by means of the narrowed portion 220).
The toothbrush head 230 and handle 210 are formed forming a single unitary structure using a molding, machining, milling or other suitable process. However, in other embodiments, cable 210 and head 230 may be formed constituting separate components that are operationally connected at a later stage in the manufacturing process by any suitable technique known in the art, including, without limitation, thermal or ultrasonic welding, a tight fit assembly, a coupling sleeve, by thread engagement, adhesion or by fasteners. The fact that the head 230 and the cable 210 are of a unitary construction or consist of a construction of multiple parts (including connection techniques) is not a limiting factor of the present invention, unless specifically claimed. In some embodiments of the invention, the head 230 may be detachable (and replaceable) from the cable 210 using techniques known in the art.
The head 230 generally comprises a front surface 231, a rear surface 323 and a side peripheral surface 233 that extends between the front and rear surface 231, 232. The front surface 231 and the rear surface 323 of the head 230 can assume a variety range of shapes and contours, none of which limit the present invention. The front surface 231 and the rear surface 323, for example, can be flat, contoured or combinations of planes.
In addition, if desired, the rear surface 323 may also comprise additional structures for oral care or teeth engagement, such as a soft tissue cleaner or a teeth polishing structure. An example of a soft tissue cleaner is an elastomeric pad comprising a plurality of ridges and / or grooves. An example of a tooth polishing structure may be an elastomeric element, such as a prophylactic cup (s) or elastomeric grinders. Furthermore, although the head 230 is usually wider than the narrowed portion 220 of cable 210, it could in some constructions simply be a continuous extension or narrowing of cable 210.
The front surface 231 of the head 230 comprises a collection of oral care elements such as teeth engaging elements 235 extending therefrom for cleaning and / or for polishing contact with an oral surface and / or interdental spaces. Although the collection of teeth engaging elements 235 is suitable for brushing teeth, the collection of elements engaging teeth 235 can also be used to polish teeth instead of cleaning teeth or in addition to cleaning. As used herein, the term "teeth engaging elements" is used in a generic sense to refer to any structure that can be used to clean, polish or rub teeth and / or soft oral tissue (tongue, cheek) , gums, etc., for example), through relative surface contact. Common examples of "teeth engaging elements" include, without limitation, tufts of bristles, filament bristles, fiber bristles, nylon bristles, spiral bristles, rubber bristles, elastomeric protrusions, flexible polymer protrusions, combinations thereof and / or structures containing such materials or combinations. Suitable elastomeric materials include any resilient biocompatible material for use in an oral care device. In order to provide ideal comfort as well as cleaning benefits, the elastomeric material of the toothed or soft tissue coupling elements has a hardness property in the Shore A8 to A25 hardness range. A suitable elastomeric material is a styrene-ethylene / butylene-styrene (SEBS) block copolymer manufactured by GLS Corporation. However, a SEBS material from other manufacturers or other materials could be used within or outside the hardness limits noted above.
The toothed engaging elements 235 of the present invention can be connected to the head 230 in any manner known in the art. For example, clamps / anchors, formation of tufts in the mold (IMT) or formation of tufts without anchor (AFT) could be used for the assembly of cleaning elements / engagement elements with the teeth. In AFT, a plate or membrane is attached to the brush head, by ultrasonic welding, for example. The bristles extend across the plate or membrane. The free ends of the bristles on one side of the plate or membrane perform the cleaning function. The ends of the bristles on the other side of the plate or membrane are fused together by heat and can be anchored in place. Any suitable form of cleaning elements can be used in the broad practice of the present invention. Alternatively, the bristles could be mounted to blocks or sections of tufts, extending them through suitable openings in the tuff blocks so that the base of the bristles is mounted inside or below the tuff block.
The toothbrush 200 and the dispenser 300 are separate structures that are specially designed to be detachably coupled to each other, when they are in the assembled state (here refers to a storage state) and completely insulated and separated from each other when in a disassembled state (here refers to an application state). The toothbrush 200 and the dispenser 300 are illustrated in the storage state in figures 1 - 2 and in the application state in figure 3. The dispenser 300 can be slidably manipulated and changed between the storage state (Figures 1-2 ) where the dispenser 300 is located (or housed) within the toothbrush handle 210 and the state of application (Figure 3) where the oral care dispenser 300 is removed from the handle 210 by the user if desired.
Referring now to Figures 4-6, the dispenser 300 is illustrated schematically. The dispenser 300 is an elongated, pen-like tubular structure that extends along the longitudinal geometric axis B-B. The dispenser 300 generally comprises a housing 301, an applicator 302 coupled to one end of the housing 301, and an actuator 303 extending from an opposite end of the housing 301. The actuator 303 protrudes axially from the housing 301 so that a user can easily grasp and rotate the actuator 303. The dispenser 300 is designed to be capable of being operated to dispense the fluid stored inside using a single hand. More specifically, the dispenser is positioned in a user's hand so that the actuator 303 is accommodated in the user's palm. The user then uses the fingers of the same hand to rotate the housing 301 (while keeping the actuator 303 stationary in relation to the housing 301). As a result, the fluid contained therein is dispensed from dispenser 300. The dispensing subsystem will be described in more detail below.
The dispenser 300 generally comprises a housing 301, an applicator 302, an actuator 303, an anti-rotation sleeve 304, a collar 305, a driving component 306, an extension element 307, and an elevator 308. The housing 301 will be described first in more detail.
Frame 301 has a circular cross-section profile (shown in Figure 8). Naturally in other embodiments, frame 301 can assume different cross-sectional shapes than circular, if desired. The housing 301 is constructed of a material that is sufficiently rigid to provide the necessary structural integrity for the dispenser 300. The housing 301, for example, can be formed of a moldable rigid plastic. Suitable rigid plastics include polymers and copolymers of ethylene, propylene, butadiene, vinyl compounds and polyesters such as poly (ethylene terephthalate). The plastic (s) chosen, however, must be compatible with the fluid to be stored in the dispenser 300 and must not be corroded or degraded by oral care agents.
Although the carcass 301 is exemplified as a single-layer construction, in certain embodiments, the carcass may be a multiple-layer construction. In certain multi-layer embodiments, an inner layer may be formed from the rigid plastic materials described immediately above, while an outer layer may be formed of a soft resilient material, such as an elastomeric material. Suitable elastomeric materials include thermoplastic elastomers (TPE) or other similar materials used in oral care products. The elastomeric material of the outer layer can have a durometric hardness measurement that ranges from Shore A13 to A50 hardness, although materials outside these limits can be used. A suitable range of durometric hardness rating is between Shore A25 and A40 hardness. Although an overlapping molding construction is a suitable method of forming the outer layer, a suitable deformable thermoplastic material, such as TPE, can be formed in a thin layer and be fixed to the inner layer with a suitable adhesive, by sonic welding or by any other means.
Housing 301 is a hollow, elongated tubular structure that extends along the geometric longitudinal axis BB from a proximal end 309 to a distal end 310. Housing 301 comprises an outer surface 311 and an inner surface 312 that forms an elongated inner cavity 313. As will be discussed in more detail below, when the dispenser 300 is fully assembled, the internal cavity 313 of the housing 301 is divided into a reservoir 314 and a chamber 315 by the elevator 308. A dispensing hole 316 is provided at the distal end 310 of the housing 301 through which the fluid stored in reservoir 314 is dispensed from dispenser 300. In the exemplified embodiment, dispenser port 316 is located on a transverse end wall 317 at distal end 316 of housing 301. In certain other embodiments, dispenser port 316 may be located in other areas of frame 301, such as on one of the side walls.
The housing 301 comprises a first longitudinal section 318 and a second longitudinal section 319. The second longitudinal section 319 has a reduced cross section compared to the first longitudinal section 318. The second longitudinal section 319 extends axially from an annular shoulder 320 of the housing 301. Reservoir 314 occupies both a distal section of the first longitudinal section 318 and the second longitudinal section 319. Chamber 318 on the other hand occupies only a proximal section of the first longitudinal section 318. Since reservoir 314 occupies both a section distal from the first longitudinal section 318 as well as the second longitudinal section 319, the reservoir 314 comprises a section 314A located within the second longitudinal section 319 which has a reduced cross section compared to section 314B of the reservoir 314 located within the distal section of the first longitudinal section 318 .
The second longitudinal section 319 of housing 301 comprises a stopper portion 322 to facilitate coupling of applicator 302 to housing 301. Naturally, applicator 302 can be coupled to housing 301 in a wide variety of ways. A multiplicity of grooves spaced apart in circumference 321 are formed on the internal surface 312 of the housing 301. The grooves 321 are located inside the chamber 315 of the internal cavity 313 and extend axially from the proximal end 310. The grooves 321 are provided to receive flanges corresponding radials 323 of the anti-rotation sleeve 304 when the dispenser 300 is mounted to prevent the relative rotation between the anti-rotation sleeve 304 and the housing 301 (which in turn prevents the relative rotation between the extension element 307 and the housing 301 and between the elevator 308 and the frame 301). In addition, a portion of the grooves 321 closest to the proximal end 309 of housing 301 receives corresponding radial flanges 324 of collar 305 when dispenser 300 is mounted to prevent relative rotation of collar 305 and housing 301.
A multiplicity of circumferential grooves 325 is also provided on the internal surface 312 of the housing 301. The circumferential grooves 325 are located at the proximal end 309i of the housing 301 and receive corresponding annular ridges 326 of the collar 305 when the dispenser 300 is mounted, thus preventing the axial separation of the collar 305 from the housing 301 when subjected to an axially applied force and / or movement.
The applicator 302, in the exemplified embodiment, is formed of a soft resilient material, such as an elastomeric material. Suitable elastomeric materials include thermoplastic elastomers (TPE) or other similar materials used in oral care products. The elastomeric material of the outer layer can have a durometric hardness measurement that ranges from shore hardness A13 to A50, although materials outside these limits can be used. A suitable range of durometric hardness rating ranges from Shore A25 to A40 hardness.
In alternative embodiments, applicator 302 can be constructed of bristles, a porous or sponge material, or a fibril material. Suitable bristles include any customary bristle material such as nylon or PBT. Sponge-like materials can consist of any common foam material such as urethane foams. Fibril surfaces can be made up of several thermoplastics. The invention, however, is not so limited and applicator 302 can be any type of surface and / or configuration that can apply a viscous substance to the hard surface of the teeth, including simply a bare opening / hole.
A dispensing port 326 is provided in the applicator 302 through which the fluid from the reservoir 314 can be dispensed. When applicator 302 is coupled to the second longitudinal section 319 of housing 301, dispenser hole 326 of applicator 302 is aligned with dispenser hole 316 of housing 301. The functional surface 327 of applicator 302 has a three-lobed shape in the exemplified embodiment, but can assume any other format that is desired.
Referring now to Figures 7, 11A-B, 12A-B and 13, collar 305 will be described in more detail. The collar 305 is constructed of a material that is sufficiently rigid to provide the structural integrity necessary to perform the functions discussed below. In one embodiment, the collar 305 may be formed of a rigid moldable plastic. Suitable rigid plastics include polymers and copolymers of ethylene, propylene, butadiene, vinyl compounds and polyesters such as poly (ethylene terephthalate).
In the exemplified embodiment, collar 305 is a ring-like annular structure comprising an outer surface 328 and an inner surface 329. The inner surface 329 forms an axial passageway 330 that extends through the entire collar 305. Axial passageway 330 extends along the geometric longitudinal axis BB so that the drive component 306 can be extended through it, as will be discussed in more detail below. Collar 305 extends along the longitudinal geometric axis Bb from a proximal edge 331 to a distal edge 332. The proximal edge 332 defines an opening 333 into the axial passageway 330 while distal edge 332 defines an opening 334 to the axial passage 330.
The collar 305 comprises a narrowed portion 335, a body portion 336 and a flange portion 337. The narrowed portion 335 is a segmented annular structure projecting axially from the body portion 336. In the exemplified embodiment the narrowed portion 335 is formed by a plurality of curved segments 338-340 that project axially from the stopper portion 336 and circumferentially surround a first section 330A of the axial passage 330 (and a portion of the driving member 306 when the dispenser 300 is mounted). Adjacent curved segments 338-340 are separated by an interval 341.
The narrowed portion 335 is formed by segments 338-340 spaced apart to allow the narrowed portion 335 to have radial flexibility, so that a first annular flange 342 of the driving component 306 can pass through the narrowed portion 338 during assembly. During assembly, as the first annular flange 342 of drive component 306 passes through the narrowed portion 335, segments 338-340 flex radially outward, thus allowing the first annular flange 342 to pass through it when displaced in a first axial direction (indicated by the arrow ADi in Figure 7). However, when the first annular flange 342 of the drive component 306 passes through the narrowed portion 335, the segments 338-340 compress radially inward, returning to their original position and preventing the drive component 306 from being separated from the collar 305. More specifically, when the first annular flange 342 of the drive component 306 passes through the narrowed portion 335 and is at the distal edge 332 of the collar 305 (as shown in Figure 7), the contact between the distal edge 332 of the narrowed portion 335 and the first annular flange 342 prevents the first annular flange 342 from going back through the opening 334 defined by the distal edge 332 of the narrowed portion 335. Thus, the driving component 306 cannot be moved a substantial distance in a second axial direction 1 ( indicated by the arrow AD2 in Figure 7) in relation to collar 305. In other alternative embodiments, the narrowed portion 335 can be built in the shape of a non-segmented annular structure.
The narrowed portion 335 comprises an inner surface 329A (which is essentially an axial section of the general inner surface 329 of collar 305). The inner surface 329A of the narrowed portion 335 forms a first section 330a of the axial passage 330. In the exemplified embodiment the inner surface 329A of the narrowed portion 335 is oriented obliquely with respect to the longitudinal geometric axis B-B. It follows that the first section 330A of the axial passageway 330 has a first cross-sectional area that tapers in the direction of the distal edge 332. The oblique orientation of the inner surface 329A of the narrowed portion acts as a chamfered surface that helps guide the first flange annular 342 of the drive component 306 during the assembly of the dispenser 300 and also helps to achieve the radial flexion described above the curved segments 338-340.
The body portion 336 of the collar 305 is a non-segmented annular structure having an inner surface 329B (which is essentially an axial section of the total inner surface 329 of the collar 305). The inner surface 329B of the body portion 336 forms a second section 330B of the axial passage 330. In the exemplified embodiment the inner surface 329B of the body portion 336 is substantially parallel to the longitudinal geometric axis B-B. The second section 330B of the axial passage 330 has a second cross-sectional area that is larger than the first cross-sectional area of the first section 330A of the axial passage 330 at all points. Thus, the body portion 336 does not prevent the insertion of the first annular flange 342 of the drive component 306, nor in any way interfere with its insertion during assembly.
The collar 305 in the exemplified embodiment further comprises an annular shoulder portion 343 between the narrowed portion 335 and the body portion 336. The annular shoulder portion 343 defines an opening 344 leading from the second section 330B of the axial passage 330 to the first section 330A of the axial passage 330. As will be described in more detail below, the opening 344 defining the annular shoulder portion 343 of the collar 305 is so dimensioned that a second annular flange 345 of the driving member 306 cannot pass through the opening 344. Such obstruction prevents excessive insertion of drive component 306 through collar 305 during assembly.
The body portion 336 of the collar 305 further comprises a plurality of protrusions 346 extending radially inward from the inner surface 329B of the body portion 336 in the second section 330B of the axial passage 330 (also shown in figure 8). The multiplicity of protrusions 346 is arranged on the inner surface 329B of the body portion 336 in a manner equally spaced in circumference around the longitudinal geometric axis B-B. In the exemplified embodiment, the multiplicity of protrusions 346 are in the form of linear ridges that extend axially. However, in alternative embodiments of the invention, the multiplicity of protrusions 346 may consist, without limitation, of popcorn, protrusions, cones, curved ridges or combinations thereof. As will be described in more detail below with reference to Figure 8, the multiplicity of protrusions 346 is expected to interact and cooperate with the resilient arm (s) 347 of the drive component 306 when the dispenser 300 is mounted to provide an audible signal and / or to prevent the rotation of the actuator 303 in a second rotational direction. However, in certain embodiments of the invention, the generation of the desirable audible signal and / or the impediment of rotation of the actuator 303 in the second rotational direction can be produced by replacing the multiplicity of protrusions 346 with other topographic characteristics on the body portion 336 of the collar 305. In such a modality, the topographic characteristics would take the form of a multiplicity of depressions spaced in circumference.
As mentioned above, the body portion 336 of the collar 305 is a non-segmented annular structure. Such a non-segmented annular structure may be beneficial for the operation of the dispenser 300 over time, as the body portion 336 has an increased structural integrity that is better able to withstand the repetitive axial forces provided by the resilient arm (s) ( s) 347 of the driving component 306 to the body portion 306 during interaction with the multiplicity of protrusions 346. In addition, providing the multiplicity of protrusions 336 in a non-segmented annular structure that does not need to flex to allow the passage of the first annular flange 342 of drive component 306 during assembly, there is less likelihood of the plurality of protrusions 336 being damaged during assembly. Furthermore, there is no danger that the structure on which the multiplicity of protrusions 336 is located (i.e., the body portion 336) will be involuntarily weakened and / or permanently deformed during the passage of the first annular flange 342 of the drive component 306 during assembly.
The collar 305 further comprises a flange portion 337. The flange portion 337 comprises a proximal edge 331 of the collar 305 and thus the opening 333 in the axial passage 330. The flange portion 337 further comprises an internal surface 329C (which is essentially an axial section of the total internal surface 329 of the collar 305). The inner surface 329C of the flange portion 337 forms a third section 330C of the axial passage 330. In the exemplified embodiment, the inner surface 329C of the body portion 337 is substantially parallel to the longitudinal geometric axis B-B. The third section 330C of the axial passage 330 has a third cross-sectional area that is larger than the second cross-sectional area of the second section 330B of the axial passage 330 at all points. Thus, the flange portion 337 does not prevent the insertion of the second annular flange 342 of the drive component 306 in the second section 330B of the axial passage 330 during assembly, nor does it interfere with this insertion.
The flange portion 337 also comprises an annular crest 348 that protrudes from the outer surface 328 of collar 305. Annular crest 348 acts as a flange or stopper that prevents excessive insertion of collar 305 into housing 301 during assembly of dispenser 300. When the collar 305 is coupled to the housing 301, the annular ridge 348 is aligned with the proximal end 310 of the housing 301, so that the flange portion 348 protrudes from the proximal end 310 of the housing 301 while the narrowed portion and the body portion 335, 336 are located inside housing 301.
As mentioned above, the flange portion 337 comprises the proximal edge 331 of the collar 305 that defines the opening 333. The opening 333 is dimensioned in such a way that when a dispenser 300 is mounted a third annular flange 349 of the driving member 306 it cannot pass through opening 333. Thus, the third annular flange 349 is located adjacent to the proximal edge 331 of collar 305, but outside the axial passage 330.
When the dispenser 300 is mounted, the collar 305 is coupled to the housing 301 as best seen in Figures 5 and 6. When the dispenser 300 is mounted the body portion 336 and the narrowed portion 335 of the collar 305 are arranged inside the housing. internal cavity 313 (especially inside chamber 315) of housing 301. The flange portion 337 is aligned with the proximal end 310 of housing 301, thus preventing excessive insertion of collar 305 into internal cavity 313. When coupled to housing 301, the collar 305 cannot be rotated in relation to frame 301. Of course, cooperative structures and connection techniques other than those described here can be used to couple collar 305 to frame 301, so that relative rotation between the two is prevented.
In addition, although collar 305 is a separate component of housing 301 in the exemplified embodiment of dispenser 300, in other embodiments collar 305 (or portions thereof) may be integrally part of housing 301. In such an embodiment, housing 301 itself would comprise the structure of collar 305 described above.
Referring now concomitantly to Figures 5 - 7 and 9 - 10, the drive component 306 will be described in more detail. The drive component 306 generally comprises a drive screw 350, a post 351, a resilient arm 345 extending out of post 351, the first annular flange 342, the second annular flange 345 and the third annular flange 349. In the embodiment exemplified, the drive component 306 is integrally formed in the form of a one-piece structure. However, in certain alternative embodiments, the drive screw 350, the post 351, the resilient arm 347 and the annular flanges 342, 345, 349 can be formed as separate components that will subsequently be coupled together and / or properly positioned inside of the dispenser 300 in a cooperative manner.
The drive component 306 (and its constituent components) is constructed of a material that is sufficiently rigid to provide the structural integrity necessary to perform the functions discussed below. In one embodiment, the drive component 306 can be formed of a rigid moldable plastic. Suitable rigid plastics include polymers and copolymers of ethylene, propylene, butadiene, vinyl compounds and polyesters such as poly (ethylene terephthalate).
The driving member 306 extends from the proximal end 352 to a distal end 353 along the longitudinal geometric axis B-B. The first, second and third annular flanges 342, 345, 349 are located spaced apart from each other along the axial length of the drive component 306. The first annular flange 342 is located in a transition between the drive screw 350 and the post 351 and extends radially outwardly to form a structure that extends transversely. The second and third annular flanges 345, 349 are located on post 351 and extend radially outwardly thereto to form structures which extend transversely. Although each of the three annular flanges the first, second and third 342, 345, 349 in the exemplified embodiments consist of non-segmented annular plates, the first, second and / or third annular flange 342, 345, 349 can assume other structures in alternative modalities. The first, second and / or third annular flange 342, 345, 349 may consist of a plurality of finger-like flanges arranged with circumference spacing or may consist of a single finger-like flange.
The drive screw portion 350 extends axially from the first annular flange 342 in the first axial direction ADi along the longitudinal geometric axis BB, while post 351 extends axially from the first annular flange 342 in the second axial direction AD2 along the longitudinal geometric axis BB. The drive screw 350 and the post 351 are in axial alignment with each other along the longitudinal geometric axis B-B. The drive screw 311 is threaded, as is known in the art, therefore comprises a segmented helical ridge 354 to facilitate the axial advance of the elevator 308 through the reservoir 314 to dispense fluid from the dispenser. The pitch of the segmented helical ridge 354 is selected in such a way that the elevator 308 advances axially in the direction of the dispensing orifice 316 by a desired distance after the driving member 306 has been rotated from a predetermined rotation angle, thus dispensing a pre-volume - selected from reservoir fluid 314.
The resilient arm 347 is located on post 351 in an axial position between the second and third annular flange 345, 349. Although only a single resilient arm 347 is used in the exemplified embodiment, a multiplicity of resilient arms 347 can be provided on post 351, if desired. In such an embodiment, the resilient arms 347 will be spaced apart in circumference around post 351 at the same axial location between the second and third annular flange 345, 349. In the exemplified embodiment, the resilient arm 347 is a straight / linear rod which extends radially out of post 351. However, in alternative embodiments, the resilient arm 347 can assume other shapes, such as curved rods shown in Figures 14-15. The function of the resilient arm 347 will be described in more detail below.
Referring now concomitantly to Figures 6 and 7, when the dispenser 300 is mounted, the drive component 306 can rotate in relation to the housing 301. More specifically, the drive component 306 is rotatably coupled to the collar 305. The actuator 303 , in turn, is coupled without rotation to the proximal end 352 of the driving component 306, so that the rotation of the actuator 303 consequently rotates the driving component.
The driving component 306 extends through the axial passage 330 of the collar 305 and into the chamber 315 of the internal cavity 313. More specifically, the post 351 is disposed within the axial passage 330 of the collar 305 and extends through it, to the whereas the driving screw 350 is located distally beyond the collar 305. When it is thus mounted the first annular flange 342 of the driving component 306 is located adjacent to the distal edge 332 of the collar 305, but distally beyond the collar 305 and outside his. The first annular flange 342 cannot pass back through the opening 334 defined by the distal edge 332 of the narrowed portion 335 due to contact between the distal edge 332 of the narrowed portion 335 and the first annular flange 342.
The second annular flange 345 of the drive component 306 is located adjacent to the annular shoulder portion 343 of the collar 305 in the second section 330B of the axial passage 330. Thus the narrowed portion 335 of the collar 305 is located between the first annular flange 342 and the second annular flange 345. The third annular flange 349 of drive member 306 is located adjacent to proximal edge 331 of collar 305.
The second annular flange 345 is so dimensioned and / or has such a shape that it cannot pass through the opening 344 defined by the annular shoulder portion 343. For this reason, the contact between the annular shoulder portion 343 of the collar and the second annular flange 345 prevents drive component 306 from being inserted excessively into collar 305 during assembly. In one embodiment, the opening 344 defined by the annular shoulder portion 343 has a first diameter whereas the first annular flange 342 has a second diameter and the second annular flange 345 has a third diameter. The first diameter is larger than the second diameter and smaller than the third diameter. Thus, the first annular flange 342 can pass through the opening 344 of the annular shoulder portion 343 while the second annular flange 345 is prevented from doing the same.
Similarly, the third annular flange 349 is so dimensioned and / or so shaped that it cannot pass through the opening 333 defined by the proximal edge 331 of the collar 305. In such an embodiment, the opening 333 defined by the edge proximal 331 of collar 305 has a fourth diameter, while the third annular flange 349 has a fifth diameter. The fifth diameter is larger than the fourth diameter. The fourth diameter of the opening 33 is larger than the third diameter of the second annular flange 345.
The resilient arm 347 of the drive component 306 is located inside the body portion 336 of the collar 305. More specifically, the resilient arm 347 of the drive component 306 is located between the second and third annular flange 345, 349 and within the second section 330B of the axial passage 330. As will be discussed with reference to figure 8, the resilient arm 347 of the drive component 306 is positioned to interact with the multiplicity of protrusions 346 on the inner surface 329B of the body portion 336.
The post 351 of the drive component 306 protrudes from the flange portion 337 of the collar 305 in the second axial direction AD2. Thus, the projecting portion of post 351 provides a structure by which actuator 303 can be coupled without turning to drive component 306. Actuator 303 is also coupled so as to rotate to flange portion 337 of collar 305. Actuator 303 is located at the proximal end 352 of the drive component 306. When the dispenser 300 is mounted, the actuator 303 protrudes axially beyond the proximal end 310 of the housing 301.
Referring now to Figures 5 and 6, the elevator 308, the extension element 307 and the anti-rotation sleeve 304 will be described in detail. Each of the three, the elevator 308, the extension element 307 and the anti-rotation sleeve 304 are constructed of a material that is sufficiently rigid to provide the structural integrity necessary to perform the functions discussed below. In one embodiment, each of the two, the extension element 307 and the anti-rotation sleeve 304 can be formed of a rigid moldable plastic. Suitable rigid plastics include polymers and copolymers of ethylene, propylene, butadiene, vinyl compounds and polyesters such as poly (ethylene terephthalate). In addition, in certain embodiments, the elevator 308 may be formed of a relatively soft moldable plastic material such as low density linear polyethylene.
The elevator 308 is disposed within the internal cavity 313 of the housing 301, thereby dividing the internal cavity 313 into a reservoir 314 and a chamber 315. The reservoir 314 contains the desired fluid or product which can be any active oral care agent or inactive. The oral care agent and / or its vehicle may be in any form such as a solid or fluid material including, without limitation, viscous pastes / gels or less viscous liquid compositions. Fluid is a material that flows with low viscosity in certain modalities. Any suitable fluid can be used in the present invention. The fluid may include, for example, oral care agents, such as bleaching agents, including, without limitation, peroxide-containing teeth whitening compositions. Suitable peroxide-containing teeth whitening compositions are disclosed in US patent application Serial No. 11 / 403.372, filed on April 13, 2006, granted to the assignee of the present invention, the entire contents of which are incorporated into this document as a title of reference. Although the teeth whitening agent and a sensitivity agent are the active agents exemplified in the present invention, any other suitable oral care agent can be used with the modalities of the present invention as the fluid and thus be stored inside the reservoir 317. The fluids considered include oral care agents that can be an active or non-active ingredient, including, without limitation, antibacterial agents; oxidizing or bleaching agents; enamel reinforcing or repair agents; dental erosion prevention agents; anti-sensitivity ingredient; active agents for gum health; nutritional ingredients; ingredients for the control of tartar or anti-stains; enzymes; sensory ingredients; flavoring ingredients or flavors; breath-freshening ingredients; oral bad odor reducing agents; anti-fixation or sealant agents; diagnostic solutions; occlusion agents; anti-inflammatory agents; ingredients for relieving dry mouth; catalysts to increase the activity of any of these agents; colorants or aesthetic ingredients; and their combinations. The fluid in one embodiment is free of toothpaste (that is, it does not consist of it). Instead, the fluid is intended to provide additional oral care benefits in addition to simple tooth brushing. Other suitable fluids could include lip ointment or other materials that are typically available in a semi-solid state.
In some embodiments, materials useful in the fluid contained in the reservoir may include oral care compositions comprising a basic amino acid in free or salt form. In one embodiment, the basic amino acid can be arginine. Several formulations would be useful to provide arginine to the user. Such an oral care composition, such as a toothpaste, may be used, comprising: i. an effective amount of a basic amino acid, in the free or salt form, arginine, for example, present, for example, in a proportion of at least approximately 1%, from approximately 1 to approximately 30%, for example; by weight of the total formulation, the weight calculated as a free base; ii. an effective amount of fluoride, a soluble fluoride salt solution, for example, sodium fluoride, stannous fluoride, or sodium monofluorophosphate, for example, providing approximately 250 to approximately 25,000 ppm of fluoride ions, such as approximately 1,000 to approximately 1,500 ppm; and iii. an abrasive, silica, calcium carbonate or dicalcium phosphate, for example.
The dental treatment materials of the present invention may have a viscosity suitable for use in tooth treatment applications and methods. As used herein, the term "viscosity" will refer to "dynamic viscosity", and is defined as the ratio of shear stress to strain rate as measured by AR Instruments-N Rheometer from TA Instruments, New Castle, Delaware.
When measuring viscosity at a shear rate of 1 second-1, it can have a range whose lower limit is generally approximately 0.0025 poise, approximately 0.1 poise, more specifically approximately 75 poise, the limit being upper range selected independently of the lower limit of the range and generally being approximately 10,000 poise, specifically approximately 5,000 poise, more specifically approximately 1,000 poise. Non-limiting examples of suitable viscosity ranges when measured at a shear rate of 1 second-1 include, from approximately 0.0025 poise to approximately 10,000 poise, from approximately 0.1 poise to approximately 5,000 poise, from approximately 75 poise to approximately 1,000 poise and from approximately 0.1 poise to approximately 10,000 poise.
When measuring viscosity at a shear rate of 100 seconds -1, it will have a viscosity range with a lower limit of the range generally approximately 0.0025 poise, specifically approximately 0.05 poise, and more specifically approximately 7 , 5 poise, the upper limit of the range being selected independently of the lower limit of the range and generally approximately 1,000 poise, specifically approximately 100 poise, and more specifically approximately 75 poise. Non-limiting examples of suitable viscosity ranges when measured at a shear rate of 100 seconds -1 of approximately 0.0025 poise to approximately 1,000 poise, from approximately 0.05 poise to approximately 100 poise, from approximately 7.5 poise to approximately 75 poise, and from approximately 0.05 poise to approximately 1,000 poise.
When viscosity is measured at a shear rate of 10,000 seconds -1, it will be in a range where the lower limit will generally be approximately 0.0025 poise, specifically approximately 0.05 poise, and more specifically approximately 5 poise, the upper limit of the range being selected regardless of the lower limit of the range and generally approximately 500 poise, specifically approximately 50 poise. Non-limiting examples of suitable viscosity ranges when measured at a shear rate of 10,000 seconds-1, include approximately 0.0025 poise to approximately 500 poise, approximately 0.005 poise to approximately 50 poise, approximately 5 poise to approximately 50 poise , and from approximately 0.05 poise to approximately 500 poise.
Each formulation contains a viscosity agent that adjusts the viscosity of the formulation to a level that allows effective flow from reservoir 317 through dispenser orifice 319 of case 301, and out of dispenser orifice 326 from applicator 302. This agent may consist of in water, thickeners or thinners. The viscosity must be adjusted in relation to the dimensions of the dispenser orifice 319 (that is, including length of internal cross-sectional area, shape etc.), the composition of applicator 302 or another used channel (hollow channel, porous channel etc.) and the amount of force available to pressurize the reservoir 317.
The elevator 308 forms a hermetic seal between the reservoir 314 and the chamber 313. An upper surface 360 of the elevator 308 forms a lower end wall of the reservoir 314, while the lower surface 361 of the elevator 308 forms the upper end wall of the chamber 315. The upper surface 360 of the elevator forms a continuous and uninterrupted limit of the fluid that delimits a lower end of the reservoir 314. The drive component 306, including the drive screw 350, does not protrude through the elevator 308, nor through the upper surface 360. In other words, the drive component 306, including the drive screw 350, is completely isolated from the reservoir 314 and never comes into contact with the fluid inside the reservoir 314, even when the elevator 308 is in a fully retracted state (as shown in Figure 6).
The elevator 308 comprises a base portion 362 and a stop portion 363 which extends from the base portion d362 along the longitudinal geometric axis BB towards dispenser orifice 316. The stop portion 363 comprises an internal cavity having an upper end closed and an open lower end. When the dispenser 300 is mounted, the elevator 308 is in a fully retracted position (as shown in Figure 6), a distal portion of the drive screw 350 lodges within the inner cavity of the stopper portion 363 of the elevator 308. However , as can be seen, the driving screw 350 is still unable to penetrate through the elevator 308 or its external surface 360. In addition, the external surface 360 of the elevator 308 can comprise more than one surface. When the elevator is advanced axially through reservoir 314 and it reaches a fully extended position (not shown), reservoir 314 will be substantially emptied, containing no more fluid.
The elevator 308 cannot rotate with respect to frame 301, but can be axially displaced with respect to it. The relative rotation between the elevator 308 and the housing 301 can be prevented by projecting the elevator 308 and the cavity 313 to have corresponding cross-sectional shapes other than the circular. However, in the exemplified embodiment in which circular cross sections are used, the relative rotation between the elevator 308 and the frame 301 is prevented by the non-rotation coupling of the anti-rotation sleeve 304 to the elevator 308. As already mentioned, the anti-rotation sleeve 304 has no rotation in relation to the housing 301 due to a cooperation by groove / crest interlocking that is obtained between the internal surface of the housing 301 and the anti-rotation sleeve 304.
The elevator 308 is coupled to the drive screw 350, so that the relative rotation between the drive screw 350 and the elevator 308 advances the elevator 308 in the direction of the dispensing orifice 316, thus expelling a volume of fluid from the reservoir 314. exemplified embodiment the elevator 308 is coupled to the drive screw 350 by means of the extension element 307, with the use of male and female threads that will be described in more detail below. The elevator 308 further comprises an annular groove formed on its lower surface 361 of the base portion 362 to couple with the extension element 307.
In alternative embodiments, the elevator 308 can be coupled directly to the drive screw 350, using male and female threads, thus eliminating the extension element 307. However, the extension element 307 may be preferred in some modalities, so that the elevator 308 does not need to be traversed by the drive screw 350, continuing to provide an adequate axial displacement distance from the elevator 308.
In the exemplified embodiment, the extension element 307 is a tubular sleeve structure that extends from a proximal end 368 to a distal end 369. However, in some other embodiments, the extension element can be in the form of a frame, of struts or one or more elongated rods extending from a threaded collar to the elevator 308. The extension element 307 has an internal surface that forms an axial passage that extends through the entire extension element 307. The internal surface comprises a threaded portion 370A and an unthreaded portion 370B. The threaded portion 370A is located at the proximal end 368 of the extension element 307 and comprises a threaded surface that operatively engages with the threaded surface of the drive screw 350 when the dispenser 300 is mounted. In addition, when the dispenser is mounted, the elevator 308 is in the fully retracted position (as shown in Figure 6), the drive screw 350 extending across the axial passage of the extension element 380.
The elevator 308 is coupled to the extension element 307 by inserting the distal end 369 of the extension element 307 into the elevator 308. Naturally, the coupling between the elevator 308 and the extension element 307 can be carried out in a variety of different ways, none of which limits the present invention. In addition, in certain embodiments, the elevator 308 and the extension element 307 can be formed together forming a unitary structure, and not as separate components.
Referring now to Figures 6 and 8, the interaction between the resilient arm 347 and the multiplicity of protrusions 346 during operation of the dispenser 300 will be described. Rotating the actuator 303 in a first rotational direction ωi causes the drive component 306 also rotates in the first rotational direction ωi, thus causing: (1) the elevator 308 to advance axially along the driving screw 350 in the first axial direction ADi to dispense the fluid from the dispensing port 316; and (2) the resilient arm 347 moves over the multiplicity of protrusions 346. As the resilient arm 347 rotates within the second section 330B of the axial passage in the first rotational direction ωi, the resilient arm 347 comes into contact with each of the protrusions of the multiplicity of protrusions 346 consecutively. As the resilient arm 347 is forced to move over each protrusion of the multiplicity of protrusions 346, the resilient arm 347 deforms (which in the exemplified embodiment consists of a flexion). As the rotation continues and the resilient arm 347 passes over each protrusion of the multiplicity of protrusions 346, the resilient arm 347 compresses back and recovers its original state (shown in figure 8) thus generating an audible signal, which is a "click" sound in some modes. This "click" informs the user that the fluid has been dispensed and allows the user to dispense an accurate and reproducible amount of the fluid based on the number of "clicks".
Referring now to Figures 14, 15 and 15A, alternative modalities of the drive component 306B and collar 305B are illustrated which can be incorporated into dispenser 300. Drive component 306B and collar 305B are substantially identical to drive component 306 and the collar 305 discussed above, except for the resilient arms 347B and the multiplicity of protrusions 346B. Thus, the description below will be limited in this sense, it being understood that the description above with reference to Figures 1 - 13 is applicable in all other senses.
The drive component 306B comprises a pair of resilient arms 347B extending radially out of the post 351B. In contrast to the resilient arm 347 of the drive component 306, each of the resilient arms 347B of the drive component 306B is curved along its length in a second rotational direction cm instead of being straight / linear. As exemplified, each of the 347B resilient arms has a substantially C-shaped cross section (shown in Figure 15). Of course, in other embodiments, each of the 347B resilient arms can assume other curved shapes.
In the exemplified embodiment, the resilient arms 347B comprise a first resilient arm 347B and a second resilient arm 347B which are spaced apart in circumference at post 351B by approximately 180 °. Of course, other spacing in circumference can be used, if desired. In addition, in alternative embodiments of the invention, more or less two resilient arms 347B can be used.
As with resilient arm 347 and protrusions 346, when drive member 306B is operationally coupled to collar 305 and drive member 306B is rotated in the first rotational direction ωi with respect to collar 305B, resilient arms 347B slide over each protrusion of the multiplicity of 346B protrusions. As the resilient arms 347B slide over each protrusion of the multiplicity of protrusions 346B, the resilient arms 347B deform radially inward to allow the resilient arms 347B to pass over the multiplicity of protrusions 346B. When the terminal ends of the resilient arms 347B pass through the multiplicity of protrusions 346B, the resilient arms 347B recover their original state, thus generating an audible signal as discussed above.
However, unlike the interaction between the resilient arm 347 and the protrusions 346, the interaction between the multiplicity of protrusions 346B and the resilient arms 347B prevents the rotation of the drive component 306B (and, in turn, of the actuator 303), in the second rotational direction ω2. Thus, when the drive component 306B is used in conjunction with the collar 305B in the dispenser 300, the elevator 308 can be advanced axially only in the first axial direction ADi.
To obtain the function mentioned above, each protrusion of the multiplicity of protrusions 346B comprises a front surface 380 and a rear surface 381. The front surface 380 is oriented so that the resilient arms 247B can be easily slid over the protrusions 346B during rotation in the first rotational direction ωi. On the other hand, the rear surface 381 is oriented in such a way that the resilient arms 247B cannot slide back over the rear surface 381 when the resilient arms 347B have passed through the rear surface 381 and are then rotated in the second direction rotational ω2. In simple terms, the rear surfaces 381 act as stop surfaces that engage with the end ends of the resilient arms 347B.
In one embodiment, this is achieved by orienting the front surfaces 380 in such a way that they extend from the inner surface 329 of the collar 305B at a sufficiently large first angle β, while the rear surfaces 381 are oriented to extend from the internal surface 329 of collar 305B at a sufficiently small second angle θ. The first angle β is greater than the second angle θ. In one embodiment, the first angle β is between 135 ° and 160 °, while the second angle θ is between 30 ° and 100 °.
As used throughout this document, limits are used as an abbreviated form to describe any and all values within them. Any value within the limits can be selected as the range limit. In addition, all references cited in this document are incorporated in full into this document by way of reference. In the event of a conflict between a definition in the present description and a cited reference, the present description prevails.
Although the above description and the drawings represent exemplary embodiments of the present invention, it should be understood that several additions, modifications and substitutions can be introduced without deviating from the spirit and scope of the present invention as defined in the appended claims. More especially, it should be evident to those skilled in the art that the present invention can be implemented in other shapes, structures, arrangements, proportions, specific sizes and with other elements, materials and components, without any deviation from the spirit or essential characteristics thereof. Those skilled in the art will note that the invention can be used with many modifications of structure, arrangement, proportions, sizes, materials and components, and others, used in the implementation of the invention, and which are especially adapted to the 10 specific environments and specific operational requirements. without deviating from the principles of the present invention. The modalities described in this document must therefore be considered, in all respects, to be illustrative and not restrictive, the scope of the invention being defined by the appended claims and not being limited to the description or modalities above.

权利要求:
Claims (29)
[0001]
1. Dispenser for oral care, CHARACTERIZED by the fact that it comprises: a housing having a longitudinal geometric axis and an internal reservoir containing a fluid; a collar coupled without rotation to the housing, the collar comprising an axial passageway, a narrowed portion having an inner surface forming a first section of the axial passageway and a plurality of protuberances extending radially into an inner surface of the body portion, the narrowed portion formed by a multiplicity of segments that protrude axially from the body portion, the adjacent segments of the multiplicity of segments being separated by an interval; - a drive component coupled to the collar to rotate, the drive component comprising a first annular flange located adjacent to the distal edge of the narrowed portion, a drive screw extending from the first annular flange in a first axial direction, a post extending from the first annular flange in a second axial direction and through the axial passage, and at least one resilient arm extending radially out of the post in the second section of the axial passage; and, since the rotation of an actuator in a first rotational direction causes: (1) an elevator to advance axially along the actuation screw in the first axial direction to dispense the fluid from a dispensing orifice; and (2) the at least one resilient arm moves through a multiplicity of protuberances, deforming the at least one resilient arm when it moves through each protuberance in the multiplicity of protuberances and recovering an original state after having passed through each protuberance of the multiplicity of protrusions to generate an audible signal.
[0002]
2. Dispenser for oral care, according to claim 1, CHARACTERIZED by the fact that the collar comprises an annular shoulder portion between the narrowed portion and the body portion.
[0003]
3. Oral care dispenser, according to claim 2, CHARACTERIZED by the fact that the drive component comprises a second annular flange located adjacent to the annular shoulder portion of the collar in the second section of the axial passage, the second annular flange being it cannot pass through an opening defined by the annular shoulder portion, the narrowed portion located between the first and the second annular flange.
[0004]
4. Dispenser for oral care according to claim 3, CHARACTERIZED by the fact that the opening defined by the annular shoulder portion has a first diameter, the first annular flange has a second diameter and the second annular flange has a third diameter, and the first diameter being larger than the second diameter and smaller than the third diameter.
[0005]
5. Dispenser for oral care according to either of claims 3 or 4, CHARACTERIZED by the fact that the drive component comprises a third annular flange located adjacent to a proximal edge of the collar, the third annular flange being unable to pass through an opening derived from the proximal edge of the collar, the at least one resilient arm located between the second and third annular flange.
[0006]
6. Oral care dispenser according to any one of claims 1, 2, 3, 4 or 5, CHARACTERIZED by the fact that the first section of the axial passage has a first cross-sectional area and the second section of the axial passage has a second cross-sectional area that is larger than the first cross-sectional area.
[0007]
7. Oral care dispenser according to any of claims 1, 2, 3, 4, 5 or 6, CHARACTERIZED by the fact that the inner surface of the narrowed portion is oriented obliquely to the longitudinal geometric axis so that the first cross-sectional area is reduced towards the distal edge.
[0008]
8. Oral care dispenser according to any one of claims 1, 2, 3, 4, 5, 6 or 7, CHARACTERIZED by the fact that the internal surface of the body portion is substantially parallel to the longitudinal geometric axis.
[0009]
9. Oral care dispenser according to any one of claims 1, 2, 3, 4, 5, 6, 7 or 8, CHARACTERIZED by the fact that the distal edge of the narrowed portion defines an opening and the first flange being annular can pass through the opening defined by the distal edge of the narrowed portion when moved in the first axial direction from a position within the first section of the axial passage and the contact between the distal edge of the narrowed portion and the first annular flange prevents the first annular flange pass through the opening defined by the distal edge of the narrowed portion when moved in the second axial direction from a position beyond the distal edge of the narrowed portion.
[0010]
10. Oral care dispenser according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8 or 9 CHARACTERIZED by the fact that the at least one resilient arm comprises a straight resilient arm.
[0011]
11. Dispenser for oral care according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8 or 9 CHARACTERIZED by the fact that the multiplicity of protuberances is spaced in a circumferential way around longitudinal axis, and the multiplicity of protrusions and at least one resilient arm are configured in such a way that the contact between the at least one resilient arm and the multiplicity of protrusions prevents the actuator from rotating in a second rotational direction which is opposite the first rotational direction.
[0012]
12. Oral care dispenser according to claim 11, CHARACTERIZED by the fact that the at least one resilient arm comprises a first resilient arm that is curved in the second rotational direction and a second resilient arm that is curved in the second rotational direction, the second resilient arm being spaced from the first resilient arm in a circumference of approximately 180 °.
[0013]
13. Dispenser for oral care according to claim 12, CHARACTERIZED by the fact that the first resilient arm and the second resilient arm substantially have a C-shaped cross section.
[0014]
14. Dispensaαor pars cuxdaoo orai, in accordance with any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or 13, CHARACTERIZED by the fact that the drive component is a component consisting of a single part.
[0015]
15. Oral care dispenser according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14, CHARACTERIZED by the fact that the necklace comprises a flange portion aligned with a proximal end of the housing and protruding from it, the body portion being located inside the housing, and the post of the collar flange projecting in the second axial direction.
[0016]
16. Oral care dispenser according to any of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15, CHARACTERIZED by the fact that the body portion is a non-segmented annular structure.
[0017]
17. Oral care system, CHARACTERIZED by the fact that it comprises: - a toothbrush; the oral care dispenser of any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or 16, wherein the oral care dispenser it is configured to be detachably attached to the toothbrush.
[0018]
18. Dispenser for oral care, CHARACTERIZED by the fact that it comprises: a housing having a longitudinal geometric axis and an internal reservoir containing a fluid; a collar coupled in a non-rotating manner to the carcass, including staining an internal surface that forms an axial passageway, the internal surface of the collar comprising a multiplicity of characteristics arranged spaced apart in circumference around the longitudinal geometric axis; - a drive component rotatably coupled to the collar, the drive component comprising a drive screw, a pole and one or more resilient arms extending radially out of the post, the one or more resilient arms being curved in a second rotational direction around the longitudinal geometric axis; the rotation of an actuator in a first rotational direction causes: (1) an elevator to advance axially along the drive screw in a first axial direction to dispense fluid from a dispensing orifice; and (2) the one or more resilient arms move over the multiplicity of characteristics; and - the interaction between the multiplicity of characteristics and the one or more resilient arms preventing the actuator from rotating in the second rotational direction.
[0019]
19. Dispenser for oral care, according to claim 18, CHARACTERIZED by the fact that the multiplicity of characteristics comprises a multiplicity of protuberances that extend radially inwards from the internal surface of the collar into the axial passage, and that the rotation of the actuator in the first rotational direction causes the one or more resilient arms to deform when they move over each protuberance of the multiplicity of protuberances and recover an original state after having passed through each protuberance of the multiplicity of protuberances to generate an audible signal .
[0020]
20. Dispenser for oral care according to claim 19, CHARACTERIZED by the fact that each protuberance of the multiplicity of protuberances comprises: (1) a front surface on which the one or more resilient arms can slide during the rotation of the actuator in the first rotational direction; and (2) a rear surface that engages with the end edge of one or more resilient arms when the actuator is rotated in the second rotational direction, thereby preventing further rotation of the actuator in the second rotational direction.
[0021]
21. Oral care dispenser according to claim 20, CHARACTERIZED by the fact that the front surface extends from the internal surface of the collar forming a first angle and the rear surface extends from the internal surface of the collar forming a second angle, the first angle being greater than the second angle.
[0022]
22. Dispenser for oral care, according to any of claims 18, 19, 20 or 21, CHARACTERIZED by the fact that the drive component is a component consisting of a single piece.
[0023]
23. Oral care dispenser according to any one of claims 18, 19, 20, 21 or 22, CHARACTERIZED by the fact that the one or more resilient arms have a substantially C-shaped cross section.
[0024]
24. Oral care dispenser according to any one of claims 18, 19, 20, 21, 22 or 23, CHARACTERIZED by the fact that it comprises a pair of resilient arms spaced in circumference of approximately 180 °.
[0025]
25. Oral care dispenser according to any one of claims 18, 19, 20, 21, 22, 23 or 24, CHARACTERIZED by the fact that the collar comprises a narrowed portion that forms a first section of the axial passage and a portion body that forms a second section of the axial passage, the narrowed portion being formed by a multiplicity of segments that project axially from the body portion, the adjacent segments of the multiplicity of segments being separated by an interval, and the multiplicity being of features extends radially into the body portion.
[0026]
26. Oral care dispenser according to claim 25, CHARACTERIZED by the fact that the drive component comprises a first annular flange located adjacent to a distal edge of the narrowed portion, the distal edge of the narrowed portion defining an opening and the first annular flange being able to pass through the opening defined by the distal edge of the narrowed portion when moved in the first axial direction from a position within the first section of the axial passage and the contact between the distal edge of the narrowed portion and the first flange annular prevents the first annular flange from passing through the opening defined by the distal edge of the narrowed portion when moved in the second axial direction from a position beyond the distal edge of the narrowed portion.
[0027]
27. Dispenser for oral care according to either of claims 25 or 26, CHARACTERIZED by the fact that the body portion is a non-segmented annular structure.
[0028]
28. Oral care system, CHARACTERIZED by the fact that it comprises: - a toothbrush; an oral care dispenser of any one of claims 18, 19, 20, 21, 22, 23, 24, 25, 26 or 27, wherein the oral care dispenser is configured to be detachably coupled to the toothbrush .
[0029]
29. Dispenser for oral care, CHARACTERIZED by the fact that it comprises: a housing having a longitudinal geometric axis and an internal reservoir containing a fluid; a collar non-rotatably coupled to the housing, the collar comprising an axial passage, a segmented annular narrowed portion having an inner surface forming a first section of the axial passage, a non-segmented annular body portion forming a second section of the axial passage, and a multiplicity of protrusions extending radially inward from an internal surface of the non-segmented annular body portion; - a drive component rotatably coupled to the collar, the drive component comprising a drive screw extending from the first annular flange in a first axial direction, a post extending from the first annular flange in a second axial direction and through of the axial passage, and at least one joint cradle QUΘ SΘ θsLericlθ nucilulmenoe pârâ out from the post in the second section of the axial passage; 5 e - the rotation of an actuator in a first rotational direction causes: (1) an elevator to advance axially along the actuation screw in the first axial direction to dispense fluid from a dispensing orifice; and (2) the at least one resilient arm moves over a multiplicity of protuberances, the at least one resilient arm deforms when it moves over each protuberance of the multiplicity of protuberances and recovering an original state after passing through each protuberance the multiplicity of protrusions to generate an audible signal.

类似技术:

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公开号 | 公开日 | 专利标题

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BR112013015203B1|2020-10-20|dispenser and oral care system

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US10702052B2|2020-07-07|Dispenser

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RU2597542C1|2016-09-10|Oral care system

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MX2015004881A|2015-07-23|Oral care system.

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TWI478699B|2015-04-01|Oral care dispenser and oral care system implementing the same

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RU2597298C1|2016-09-10|Oral care system

同族专利:

---

公开号 | 公开日

---

AU2011341699A1|2013-05-09|

---

ES2526071T3|2015-01-05|

---

RU2014134201A|2016-03-20|

---

EP2651262A1|2013-10-23|

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RU2533101C1|2014-11-20|

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MX2013006801A|2013-07-29|

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RU2561843C2|2015-09-10|

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CO6721008A2|2013-07-31|

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RU2597527C2|2016-09-10|

---

EP2651261B1|2014-10-15|

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AU2011341699B2|2015-05-07|

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EP2810584A2|2014-12-10|

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CN103249330B|2015-11-25|

---

US8523475B2|2013-09-03|

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BR112013014928A2|2016-09-13|

---

MX2013006809A|2013-08-01|

---

KR20130095821A|2013-08-28|

---

KR20130095833A|2013-08-28|

---

RU2015113120A|2015-09-20|

---

CA2821055A1|2012-06-21|

---

CA2821381A1|2012-06-21|

---

RU2013132548A|2015-01-20|

---

US20120257920A1|2012-10-11|

---

EP2651261A1|2013-10-23|

---

AU2011341697A1|2013-05-16|

---

WO2012082183A1|2012-06-21|

---

CN103249329B|2016-04-27|

---

RU2561843C9|2016-07-10|

---

MX354781B|2018-03-21|

---

EP2752128A3|2015-05-20|

---

EP2651262B1|2014-10-22|

---

BR112013014928B1|2020-12-15|

---

HK1188693A1|2014-05-16|

---

EP2810584A3|2015-02-25|

---

HK1188692A1|2014-05-16|

---

MX355031B|2018-04-02|

---

HK1198282A1|2015-03-27|

---

CA2821381C|2015-06-30|

---

BR112013015203A2|2016-09-13|

---

CN103249329A|2013-08-14|

---

CN103249330A|2013-08-14|

---

WO2012082185A1|2012-06-21|

---

RU2654424C2|2018-05-17|

---

EP2752128B1|2018-10-17|

---

CO6721002A2|2013-07-31|

---

AU2011341697B2|2015-05-28|

---

ES2528102T3|2015-02-04|

---

EP2752128A2|2014-07-09|

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法律状态:
2020-08-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2020-10-20| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 01/08/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US42341410P| true| 2010-12-15|2010-12-15|

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US61/423,414|2010-12-15|

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PCT/US2010/060874|WO2011079028A2|2009-12-23|2010-12-22|Oral care system, kit and method|

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USPCT/US2010/060874|2010-12-22|

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PCT/US2011/046132|WO2012082185A1|2010-12-15|2011-08-01|Oral care dispenser|

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