oral care system

专利摘要:
ORAL CARE SYSTEM. A dental care system, such as a toothbrush having a detachable dispenser containing a dental care material. In one embodiment, the distributor may include accommodation; an internal reservoir for containing a fluid and a dispensing orifice for distributing the fluid; a first cam surface, the first cam surface being non-rotating with respect to the housing; an alternator comprising a drive, a drive screw, and a second cam surface, alternator being rotatable with respect to the housing; an elevator forming a transverse end wall of the reservoir, the elevator being non-rotating with respect to the jetting and coupled screwed to the actuation screw, where the rotation of the actuator causes the elevator (1) to move axially and (2) to alternate axially.
公开号:BR112012015430B1
申请号:R112012015430-3
申请日:2010-12-22
公开日:2020-08-25
发明作者:Eduardo Jimenez；Alan Sorrentino；Sharon Kennedy；John Gatzemeyer；Robert Moskovich；Michael Rooney；Joseph Fattori
申请人:Colgate-Palmolive Company；
IPC主号:

专利说明:

[0001] This order claims priority for international order No. PCT / US2009 / 069408 filed on December 23, 2009; international application No. Pct / US2009 / 069402, filed December 23, 2009, U.S. provisional application No. 61 / 410,514, filed November 5, 2010; U.S. provisional application No. 61 / 423,397, filed December 15, 2010; U.S. provisional application No. 61 / 423,414, filed December 15, 2010; U.S. provisional application No. 61 / 42,435, filed December 15, 2010; and U.S. Provisional Application No. 61 / 423,449, filed December 15, 2010, all of which are incorporated herein by reference. Field of invention
[0002] The present invention generally relates to oral care systems, kits and methods, and specifically to a system, kit and method including a toothbrush having an open cavity that holds a removable dispenser containing a fluid. Fundamentals of the Invention
[0003] Oral care products or agents are applied in different ways. For example, without limitation, a common technique used for teeth whitening products is to create a mold of a person's teeth and provide a tray in the shape of that mold. A person then just needs to add a whitening composition to the tray and apply the tray to their teeth. It is left in place for a period of time and then removed. After a few treatments the teeth gradually lighten. Another technique is to use a strip that has a composition and lightening on a surface. This strip is applied to the person's teeth and left in place for about 30 minutes. After several applications the teeth are gradually whitened. Another additional technique is the application of a whitening composition to the teeth using a small brush. This brush is repeatedly dipped back into the container during the application of the teeth whitening composition. After a few treatments the teeth gradually lighten.
[0004] One 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 whitening products to your teeth and transport that catalase back to the container. This catalase now in the container can degrade the peroxide in the container. Another problem with this last technique is that it does not adapt to use with anhydrous whitening compositions. Here, the brush can carry moisture from the mouth saliva back into the container. This will have a negative effect on the whitening composition by potentially decomposing the peroxide active ingredient. Additionally, if a person rinses the brush each time after use, moisture from wet bristles can enter the container.
[0005] While tray-based systems are suitable, many people do not use the same because they tend to be uncomfortable and / or awkward. In addition, in order to use a whitening tray, a user must keep the tray and the necessary components close at hand. This not only requires additional storage space in already filled bathroom cabinets, but there is also a need for the user to remember to use the whitening system. In addition, these tray-based systems are not conveniently portable for transport and / or travel.
[0006] In addition to the difficulties in applying some oral care products, storage is sometimes inconvenient for the user. The oral care product should typically be stored separately from oral care teeth whitening implements such as a toothbrush as the oral care product package and toothbrush are generally treated as separate and distinct parts of a regimen. of oral care.
[0007] Additional difficulties arise from the fact that the distributors used to distribute fluid materials have a tendency to leak after use due to the pressure exerted on the fluid in the reservoir from the elevator.
[0008] A more portable, compact and convenient way to store oral care products and to distribute and apply these oral care products to oral surfaces is desired. Brief Summary of the Invention
[0009] The modalities of the present invention provide an efficient, compact and portable oral care system that combines an oral care implement such as a toothbrush with a fluid dispenser in a highly portable and convenient housing. Advantageously, such modalities are especially suitable for easy transport and / or travel.
[0010] Illustrative embodiments of the present invention are directed to a toothbrush that detachably retains a removable dispenser containing a fluid reservoir. In some illustrative embodiments, the oral care system includes fluid such as fluid oral care materials, active or non-active agents, which may include, without limitation, whitening materials, enamel protection, anti-sensitivity, fluoride, tartar protection, or others oral care materials. The dispenser can be detachably moored and stored at least partially within the toothbrush handle so that a portion of the dispenser protrudes from 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, and then reinsert the dispenser into the toothbrush for convenient storage. In certain embodiments, the dispenser may be a pen-type component. The toothbrush can be removably attached and does not secure the dispenser inside the handle so that the dispenser can be repeatedly removed and reinserted. In some embodiments, the dispenser can be adapted to be refilled by the user for repeated use.
[0011] In one embodiment, the invention can be an oral care system comprising: a toothbrush; and a dispenser detachably coupled to the toothbrush, the dispenser comprising: a housing having a longitudinal geometric axis and an internal reservoir for containing a fluid; a dispensing orifice in the housing for dispensing fluid from the reservoir; a collar within the housing, the collar comprising an axial passageway and a cam surface, the collar being non-rotating with respect to the housing; an alternator comprising an actuator, a driving screw extending through the axial passage of the collar and a cam surface, the alternator being rotatable with respect to the housing; a resilient element that axially guides the alternator cam surface and the cam surface of the collar in coincident contact; an elevator forming a reservoir end wall, the elevator being non-rotating with respect to the housing and coupled screwed to the actuation screw; and where the rotation of the driver causes the elevator (1) to move axially along the drive screw in a first axial direction due to the relative rotation between the drive screw and the elevator, and (2) to alternate axially due to the relative rotation between the cam surface of the collar and the cam surface of the alternator.
[0012] In another embodiment, the invention may be an oral care system comprising: a toothbrush; and a dispenser detachably coupled to the toothbrush, the dispenser comprising: a housing forming an internal cavity extending along a longitudinal geometric axis, an elevator arranged within the internal cavity that hermetically separates the internal cavity in a reservoir to contain a fluid and a chamber, the elevator comprising an outer surface forming an end wall of the reservoir and an inner surface forming an end wall of the chamber, the elevator being non-rotating with respect to the housing; a dispensing orifice in the housing for dispensing fluid from the reservoir; a driver, a drive screw in the chamber and operationally coupled to the driver, the drive screw and the driver being rotatable with respect to the housing, where the drive screw does not penetrate through the external surface of the elevator into the reservoir, and an extension having a first end coupled to the elevator and a second end coupled screwed to the drive screw, the extension element being non-rotatable with respect to the housing; and where the rotation of the actuator causes the elevator to advance axially along the actuation screw in a first axial direction due to the relative rotation between the actuation screw and the extension element.
[0013] In another embodiment, the invention may be an oral care system comprising: a toothbrush; and a dispenser detachably coupled to the toothbrush, the dispenser comprising: a housing having a longitudinal geometric axis and an internal reservoir for containing a fluid; a distribution orifice in the housing for distributing the fluid from the reservoir, a first surface of meat within the housing, the first surface of meat being non-rotating with respect to the housing, an alternator comprising an actuator, a driving screw, and a second surface cam, the alternator being rotatable with respect to the housing, a resilient element that axially guides the second cam surface and the cam surface of the collar in coincident contact, where the coincident contact between the first cam surface and the second cam surface prevents the alternator from being decoupled from the housing; an elevator forming a reservoir end wall, the elevator being non-rotating with respect to the housing and coupled screwed to the actuation screw; where the rotation of the driver causes the elevator (1) to advance axially along the drive screw in a first axial direction due to the relative rotation between the drive screw and the elevator, and (2) to alternate axially due to the relative rotation between the first cam surface and the second cam surface.
[0014] In another additional embodiment, the invention can be an oral care system comprising: a toothbrush, and a dispenser detachably coupled to the toothbrush, the dispenser comprising: a housing forming an internal cavity extending along an axis longitudinal geometric; an elevator disposed within the internal cavity which hermetically separates the internal cavity in a reservoir to contain a fluid and a chamber, the elevator comprising an external surface forming an end wall of the reservoir and an internal surface forming an end wall of the chamber, the elevator being non-rotating with respect to the accommodation; a dispensing orifice in the housing for dispensing the fluid from the reservoir; a driver, a drive screw in the chamber and operationally coupled to the driver, the drive screw and driver being rotatable with respect to the housing, where the drive screw does not penetrate through the external surface of the elevator into the reservoir when the elevator is not fully in the stowed position; and the elevator is operatively coupled to the drive screw so that the rotation of the driver causes the elevator to advance axially along the drive screw in a first axial direction due to the relative rotation between the drive screw and the elevator.
[0015] In certain illustrative embodiments, any suitable fluid can be used with the embodiments and methods described herein in accordance with the present invention. Accordingly, the oral care treatment system can be any type of system including, without limitation, teeth whitening, enamel protection, anti-sensitivity, fluoride, tartar protection / control and others. The invention is expressly not limited to any particular type of oral care system or oral care material, unless specifically claimed.
[0016] Additional areas of applicability of the present invention will become apparent from the detailed description provided later. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, should serve the purpose of illustration only and should not limit the scope of the invention. Brief Description of Drawings
[0017] The characteristics of the illustrative modalities will be described with reference to the following drawings in which similar elements are similarly labeled. The present invention will become more fully understood from the detailed description and the accompanying drawings, in which: Figure 1 is a front perspective view of an oral care system including a toothbrush and a fluid dispenser according to an embodiment of the present invention, where the dispenser is coupled to the toothbrush; Figure 2 is a front perspective view of the oral care system of Figure 1 where the fluid dispenser is removed from the toothbrush; Figure 3 is a perspective view of the fluid dispenser of the oral care system of Figure 1; Figure 4 is a top view of the fluid dispenser in Figure 3; Figure 5 is a bottom view of the fluid dispenser of Figure 3; Figure 6 is a longitudinal cross-sectional view of the dispenser of Figure 3; Figure 7 is a longitudinal cross-sectional view of the extension element of the fluid dispenser of Figure 3; Figure 8 is a longitudinal cross-sectional view of the elevator of the fluid dispenser of Figure 3; Figure 9 is a perspective view of the fluid dispenser housing of the figure 3; Figure 10 is a longitudinal cross-sectional view of the fluid dispenser housing of Figure 3; Figure 11 is a perspective view of the fluid distributor collar of Figure 3; Figure 12 is a perspective view of the alternator of the fluid distributor of the figure 3; Figure 13 is a longitudinal cross-sectional view of the fluid distributor alternator of Figure 3; Figure 14 is a longitudinal cross-sectional view of the fluid dispenser cover of the figure 3; Figure 15 is a longitudinal cross-sectional view of the fluid dispenser applicator of Figure 3; Figure 16a is an enlarged diagram of the meat surfaces of the fluid dispenser of Figure 3 that cause the elevator to alternate, immediately after retraction; Figure 16b is an enlarged diagram of the cam surfaces of the fluid dispenser of Figure 16a, just before retraction; Figure 17 is a longitudinal cross-sectional view of a fluid dispenser according to a second embodiment of the present invention that can be incorporated into the oral care system of Figure 1; Figure 18 is a perspective view of the alternator of the fluid distributor of Figure 17; Figure 19a is a perspective view of the collar of the fluid dispenser of Figure 17; Figure 19b is a side view of the fluid distributor collar of Figure 17. Detailed Description of the Invention
[0018] The following description of preferred embodiments is merely illustrative in nature and should in no way limit the invention, its applications or uses.
[0019] The description of the illustrative modalities in accordance with the principles of the present invention should be read in relation to the attached drawings, which should be considered part of the entire written description. In describing the modalities of the invention described here, any reference to direction or guidance is intended for convenience of description only and should in no way limit the scope of the present invention. Relative terms such as "bottom", "top", "horizontal", "vertical", "above", "below", "up", "down", "top", "bottom", in addition to derivatives of them (for example, "horizontally", "descending", "ascending", etc.) should be considered as referring to the orientation as then described or as illustrated in the drawings under discussion. These relative terms are for convenience of description only and do not require the device to be constructed or operated in a particular orientation unless explicitly indicated as such. The terms such as "attached", "affixed", "connected", "coupled", "interconnected", and the like refer to a relationship in which the structures are attached or attached to each other directly or indirectly through intervention structures , in addition to fixations or movable or rigid relations, unless expressly described otherwise. Furthermore, the features and benefits of the invention are illustrated by reference to the illustrative modalities. Accordingly, the invention should not be limited to such illustrative modalities illustrating some of the possible non-limiting combinations of characteristics that may exist alone or in other combinations of characteristics; the scope of the invention being defined by the appended claims.
[0020] In describing the modalities of the invention described here, any reference to the direction or orientation is merely intended for convenience of description and should in no way limit the scope of the present invention. Furthermore, the features and benefits of the invention are illustrated by reference to illustrative modalities. Accordingly, the invention should not be limited to such illustrative modalities illustrating some of the possible non-limiting combinations of features that can be provided alone or in other combinations of features, the scope of the invention being defined by the appended claims only.
[0021] The illustrative modalities of the present invention will now be described with respect to a possible treatment or oral care system. The modalities of the oral care system can include without limitation the following fluids such as fluid oral care materials including: teeth whitening, antibacterial, enamel protection, anti-sensitivity, anti-inflammatory, anti-stick, fluorine, tartar control, protection, flavoring, sensitizing , dye and others. However, other embodiments of the present invention can be used to store and distribute any suitable type of fluid and the invention is expressly not limited to any particular oral care system or fluid oral care material alone.
[0022] With reference to figures 1 and 2, an oral care system 100 is illustrated according to an embodiment of the present invention. The oral care system 100 is an easy, independent, and readily portable system that comprises all the necessary components and chemicals necessary for a user to perform a desired oral care treatment routine. As will be described in more detail below, the oral care system 100 in an illustrative embodiment generally takes the form of a modified toothbrush having a removable dispenser 300 arranged at least partially within its handle. Since the dispenser 300 is located inside the toothbrush handle itself, the oral care system 100 is portable for travel, easy to use and reduces the amount of storage space required. Additionally, since toothbrush 200 and dispenser 300 are housed together, the user is less likely to lose the dispenser 300 and is more likely to maintain the oral treatment routine with the dispenser 300 since brushing will remind the user of simply highlight and apply the content of the distributor 300.
[0023] The oral care system 100 generally comprises a toothbrush body 200 (hereinafter referred to simply as a toothbrush) and a dispenser 300. While the invention is described here with respect to the use of a toothbrush as one of the two components of the oral care system 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 specially designed cable implements having tooth engagement elements. In certain cases, toothbrush 200 may include tooth engagement elements that are specifically designed to enhance the effect of the active agent on the dispenser on the teeth. For example, tooth engagement elements may include elastomeric cleaning elements that assist in removing tooth stains and / or assist in forcing the oral care agent into the teeth tubes. Furthermore, while toothbrush 200 is exemplified as a manual toothbrush, the toothbrush can be an electric toothbrush in other 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 a fluid oral care material including a oral care agent that achieves a desired oral effect. In one embodiment, the fluid is free (that is, it is not) of toothpaste since the dispenser 300 must increase and not exceed the brushing regime. The fluid can be selected to complement a toothpaste formula, such as by coordinating flavors, colors, aesthetics, or active ingredients.
[0024] The toothbrush 200 generally comprises a handle part 210, a nip part 220 and a head part 230. The handle 210 provides the user with a mechanism by which he grasps and readily handles the toothbrush 200. The handle 210 can be formed from many different shapes, sizes, materials and a variety of manufacturing methods which are well known to those skilled in the art, provided that it can accommodate the distributor 300 as described in detail below. If desired, cable 210 may include a suitable textured grip 211 made of soft elastomeric material. Cable 210 can be a single construction or a multi-part construction. The cable 210 extends from a proximal end 212 to a distal end 213 along a longitudinal geometric axis A-A. A (not visible) cavity is formed within 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 distributor 300 can be inserted and retracted. While opening 215 is located at the proximal end 212 of the cable in the illustrative embodiment, opening 215 can be located in other positions on cable 210 in other embodiments of the invention. For example, opening 215 may be located on a longitudinal surface of cable 210 (e.g., the front surface, the rear surface, and / or the side surfaces) and be elongated to provide sufficient access to the cavity.
[0025] The cable 210 passes into the nip 220 at the distal end 213. While the nip 220 generally has a smaller cross-sectional area than the cable 220, the invention is not limited. In broader terms, the narrowing 220 is merely the transition region between the cable 210 and the head 230 and can, conceptually, be considered a part of the cable 210. In this way, the head 230 is connected to the distal end 213 of the cable 210 (through narrowing 220).
[0026] The toothbrush head 230 and handle 210 are formed as a single unitary structure using a molding, grinding, machining or other suitable process. However, in other embodiments, cable 210 and head 230 may be formed as 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, tight fitting assembly, coupling sleeve, threaded coupling, grip or fasteners. If the head 230 and the cable 10 are of a single or multi-piece construction (including connection techniques) does not limit the present invention, unless specifically mentioned. In some embodiments of the invention, the head 230 may be detachable (and replaceable) from the cable 210 using techniques known in the art.
[0027] Head 230 generally comprises a front surface 231, a rear surface 232 and a peripheral side surface 233 that extends between the front and rear surfaces 231,232. The front surface 231 and the rear surface 232 of the head 230 can take on a wide variety of shapes and contours, none of which limits the present invention. For example, the front and rear surfaces 231, 232 can be flat, contoured or a combination of both. In addition, if desired, the rear surface 232 may also comprise additional structures for oral cleaning or tenting, such as a soft tissue cleaner or a teeth polishing structure. An example of a soft tissue cleaner is an elastomeric part comprising a plurality of small protrusions and / or protrusions. An example of a tooth polishing structure may be an elastomeric element, such as polishing cups or elastomeric cleaners. In addition, while the head 230 is normally extended with respect to the narrowing 220 of the cable 210, it may, in some constructions, simply be an extension or continuous narrowing of the cable 210.
[0028] The front surface 231 of the head 230 comprises a collection of oral cleaning elements such as tooth engaging elements 235 extending thereafter for cleaning and / or polishing contact with an oral surface and / or interdental spaces. While the collection of tooth engaging elements 235 is suitable for brushing teeth, the collection of cleaning elements 235 can also be used to polish teeth instead of or in addition to cleaning teeth.
[0029] As used here, the term “tooth engagement 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 (for example, tongue, cheek, gums, etc.) through relative surface contact. Common examples of “tooth engagement elements” include, without imitation, tufts of bristles, filament bristles, fiber bristles, nylon bristles, spiral bristles, rubber bristles, elastomeric protuberances, flexible polymeric protuberances, combinations thereof and / or structures containing such materials or combinations. Suitable elastomeric materials include any resilient biocompatible material suitable for use in an oral hygiene appliance. To provide optimal comfort in addition to cleaning benefits, the elastomeric material of the tooth or soft tissue engaging elements has a hardness property in the range of A8 to A25 of Shore hardness. A suitable elastomeric material is a styrene-ethylene / butylene-styrene block copolymer (SEBS) manufactured by GLS Corporation. However, other manufacturers' SEBS material or other materials within and outside the noted hardness range can be used.
[0030] The tooth 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, tuft in mold (IMT) or other anchor-free tuft (AFT) can be used to assemble cleaning elements / tooth engaging elements. In AFT, a plate or membrane is attached to the brush head as by means of ultrasonic welding. 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 to be anchored in place. Any suitable form of cleaning elements can be used in the broad practice of this invention. Alternatively, the bristles can be mounted to the tuff blocks or sections by extension through the appropriate openings in the tuff blocks so that the base of the bristles is mounted inside or below the tuff block.
[0031] Toothbrush 200 and dispenser 300 are separate non-unitary structures that are specially designed to be attached non-securely together when in an assembled state (referred to here as a storage state) and completely insulated and separated from each other when in a disassembled state (referred to here as an application state). The toothbrush 200 and the dispenser 300 are illustrated in the storage state in figure 1 and in the application state in figure 2. The dispenser 300 can be manipulated and moved in a sliding way between the storage state (figure 1) in which the dispenser 300 is moored to the toothbrush handle part 210 and the application state (figure 2) in which the dispenser 300 is removed from the handle part 210 by the user as desired. The dispenser 300 will now be described in more detail.
[0032] Referring now to figures 3 to 5 simultaneously, the dispenser 300 is schematically illustrated. The dispenser 300 is an elongated tubular pen-like structure that extends along the longitudinal geometric axis B-B. The distributor 300 generally comprises a housing 301, a removable cover 302 attached to one end of the housing 301, and a driver 303 extending from an opposite end of the housing 301. The distributor 300 is designed to be capable of being operated to distribute the fluid stored in it using a single hand. Specifically, the dispenser is positioned in the user's hand so that the driver 303 is housed in the user's palm. The user then uses the fingers of the same hand to rotate housing 301 (while holding driver 303 stationary with respect to housing 301). As a result, the fluid container is dispensed from dispenser 300. The dispensing mechanism will be described in more detail below.
[0033] The housing 301 has a non-circular cross-section (shown in figures 4 and 5). In the exemplified embodiment, housing 301 has a generally triangular cross-section having rounded corners. Obviously, in other modalities, the housing 301 can assume other non-circular shapes, or it can be circular in certain alternative modalities. For example, in the embodiment illustrated in figures 17 to 19b, the housing 301c of the distributor 300c has a generally circular cross-section. However, by forming the housing 301 so that it has a non-circular cross-section, the rotation of the dispenser 300 when it is in the storage state within the handle part 210 of the toothbrush 200 is prevented.
[0034] The actuator 303 protrudes axially from the housing 301 so that a user can easily grasp and rotate the actuator 303. A plurality of protrusions 305 in the form of aligned and spaced axial projections are formed on the outer surface 304 of the actuator 303 to facilitate additionally the grip and rotation. As discussed in greater detail below, driver 303 is part of a larger alternator component that is coupled to housing 301. However, in other embodiments, as exemplified in figures 17 to 19, driver 303c can be formed as a separate component which is coupled non-rotatively to alternator 306c. As also discussed in more detail below, driver 303 is rotatable with respect to housing 301 and alternates axially along the geometric axis B-B during rotation. In the illustrative embodiment, the driver 303 has a wheel having a substantially circular cross-section. As can be seen from figure 5, the driver 303 is dimensioned and shaped so that its cross-section fits within the cross-section of housing 301.
[0035] The cap 302 has a cross-section that corresponds in shape to the cross-section of the housing 301, and is also non-circular to facilitate gripping and / or twisting to remove the cover from the housing so that the fluid can be distributed from the reservoir internal distributor
[0036] Referring now to Figure 6, the components of the distributor 300 will be described in more detail. The dispenser 300 generally comprises a housing 301, a cover 302, an alternator 306, an extension element 307, an elevator 308, a collar 332 and an applicator 309. The alternator 306 comprises the driver 303, a resilient element 310 and a screw drive 311. In the exemplified embodiment, the driver 303, the resilient element 310 and the drive screw 311 can be formed as separate components that are subsequently coupled together and / or suitably positioned within the distributor 300 in a cooperative manner as described below. Additionally, in certain embodiments, the resilient element 310 may conceptually and / or physically be a separate component of alternator 306.
[0037] Referring now to figures 6 and 9 and 10 simultaneously, housing 301 will be described in more detail. The housing 301 is constructed of a material that is sufficiently rigid to provide the necessary structural integrity for the distributor 300. For example, the housing 301 can be formed from a hard moldable plastic. Moldable hard plastics include polymers and copolymers of ethylene, propylene, butadiene, vinyl compounds, and polyesters such as polyethylene terephthalate. The chosen plastics, however, must be compatible with the oral care material that must be stored inside the dispenser 300 and must not be corroded or degraded by the oral care fluid.
[0038] While housing 301 is exemplified as a single-layer construction, in certain embodiments, the housing can be a multi-layered construction. In certain multi-layer embodiments, an inner layer can be formed from the hard plastic materials described immediately above while an outer layer can be formed of a soft resilient material, such as an elastomeric material. Suitable elastomeric materials include thermoplastic elastomers (TPE) or other similar materials in oral care products. The elastomeric material of the outer layer may have a durometer measurement of hardness ranging between A13 and A50 of Shore hardness, although materials outside this range may be used. A suitable range of hardness durometer is between A25 to A40 Shore hardness. While a molded construction is a suitable method of forming the outer layer, a suitable deformable thermoplastic material, such as TPE, can be formed into a thin layer and fixed to the inner layer with a suitable adhesive, ultrasonic solder or by other means.
[0039] Housing 301 is an elongated hollow tubular structure extending along the longitudinal geometric axis B-B from a proximal end 315 to a distal end 316. As discussed above, housing 301 has a non-circular cross-section. In the exemplified embodiment, the housing 301 is formed by three longitudinal side walls 321-323, thus providing the housing with a transverse profile of three lobes. Obviously, the invention is not limited and the housing 301 can assume a wide variety of cross-sections, circular or non-circular, as desired.
[0040] Housing 301 comprises an outer surface 312 and an inner surface 313 that forms an elongated inner cavity 314. As discussed in greater detail below, when the dispenser 300 is fully assembled, the inner cavity 314 of housing 301 is divided into a reservoir 317 and a chamber 318 by elevator 308. A delivery port 319 is provided at distal end 316 of housing 301 through which the fluid stored in reservoir 317 is delivered from dispenser 300. In the exemplified embodiment, delivery port 319 is located on a transverse end wall 320 as the distal end 316 of housing 301. The dispensing orifice 319 is positioned on the transverse end wall 320 so that a central point of the dispensing orifice 319 is coincident with the longitudinal geometric axis BB. Furthermore, in certain embodiments, the dispensing orifice 319 can be located in other areas of the housing 301, such as one of the longitudinal side walls 321 - 323.
[0041] The housing 301 comprises a first longitudinal section 325 and a second longitudinal section 326. The second longitudinal section 326 has a reduced cross section compared to the first longitudinal section 325. The second longitudinal section 326 extends axially from an annular cross shoulder 327 of housing 301. Reservoir 317 occupies both a distal section of the first longitudinal section 325 and the second longitudinal section 326. Chamber 318, on the other hand, occupies only a proximal section of the first longitudinal section 325. As a result of reservoir 317 occupying both a distal section of the first longitudinal section 325 and the second longitudinal section 326, reservoir 317 comprises a section 317a located within the second longitudinal section 326 which has a reduced cross section in comparison to section 317b of reservoir 317 located within the distal section of the first longitudinal section 325.
[0042] The second longitudinal section 326 of the housing 301 comprises a depression 328 near the distal end 316 to facilitate the coupling of the applicator 309 to the housing 301. In the exemplified embodiment, the depression 328 is in the form of an annular groove. Obviously, depression 328 can take on a wide variety of modalities, including dimples, notches, etc. A protrusion 329 is also provided in the second longitudinal section 326 of the housing 301 to facilitate coupling of the removable cover 302 of the housing 301. In the exemplified embodiment, the protrusion 329 is in the form of an annular protrusion. Obviously, the bulge 329 can take on a wide variety of modalities, including ears, stems, protrusions, ribs, etc. The bulge 329 is located in the second longitudinal section 326 at a location closer to the shoulder 327 than the annular groove 328.
[0043] A plurality of circumferentially spaced grooves 330 are formed on the inner surface 313 of housing 301. Grooves 330 are located within chamber 318 of inner cavity 314 and extend axially from the proximal end 315. Grooves 330 are provided to receive projections and / or corresponding protrusions provided on the outer surface of collar 332 to prevent relative rotation between collar 332 and housing 301 when collar 332 is mounted on housing 301. The combination of protrusions / protuberances on collar 332 and grooves 330 of the housing 301 may be important in dispenser modalities 300 where the internal cavity 314 has a circular cross-sectional shape. However, in the modalities in which the internal cavity 314 has a non-circular shape, the relative rotation between the housing 301 and the collar 332 is prevented simply because of the non-circular transverse geometry.
[0044] A plurality of flanges 331 is provided on the internal surface 313 of housing 301 which extends radially inward in the direction of the longitudinal geometric axis B-B. The flanges 331 are located at the proximal end 315 of the housing 301 and are arranged in a circumferentially spaced shape. In certain embodiments, a single continuous annular flange or other protruding structures can be provided instead of the plurality of flanges 331. Flanges 331 help to retain collar 332 in coupling with housing 301 after distributor 330 is assembled, thus helping to prevent of collar 332 to be separated from housing 301 due to axially applied force and / or movement.
[0045] Referring now to figures 6 and 14 and 15, the details of applicator 309 and removable cover 302 will be described together with their structural cooperation with housing 301. The applicator 309, in the exemplified embodiment, is formed from a soft resilient material, such as 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 may have a durometer measurement of hardness ranging between A13 and A50 of Shore hardness, although materials outside this range may be used. A suitable range of hardness durometer is between A25 and A40 of Shore hardness.
[0046] In alternative embodiments, applicator 309 can be constructed from bristles, a porous or sponge material, or a fibrillated material. Suitable bristles include any common bristle material, such as nylon or PBT. The sponge-like materials can be any common foam material such as urethane foams. Fibrillated surfaces can consist of several thermoplastics. The invention, however, is not limited to this, and applicator 309 can be any type of surface and / or configuration that can apply a viscous substance to the hard surface of the teeth, including merely an uncoated opening / hole.
[0047] The illustrative applicator 309 comprises a tubular side wall 359 and a transverse end wall 360. An opening 361 is provided in the end wall 360 through which the reservoir fluid 317 can be dispensed. A protrusion 362, in the form of an annular protrusion, is formed on an internal surface of the side wall 359. A plurality of protrusions 363, in the form of small protrusions, extend from the external surface of the end wall 360.
[0048] When the applicator 309 is coupled to the second longitudinal section 326 of the housing 301, the protrusion 362 of the applicator 309 nestles within the depression 328 of the housing 301. Additionally, the opening 361 of the applicator 309 is aligned with the distribution hole 319 of the housing 301 .
[0049] Similar to the housing, applicator 309 has a non-circular cross-section in the illustrative modality. More specifically, applicator 309 has a three-lobe cross section. Obviously, the invention is not limited to this and the housing can assume a wide variety of circular cross sections or not, as desired.
[0050] The removable cover 302 comprises a tubular side wall 364 and a transverse end wall 365. The removable cover 302 has a closed top end 366 and an open lower end 367. An axial plug 368 extends axially from a lower surface of the wall end 365. A protrusion 394, in the form of an annular protrusion, projects from an internal surface of the side wall 364. The removable cover 302 couples to the housing 301 by sliding it over the second longitudinal section 326 of the housing 301. The combination between the protrusion 394 of the removable cover 302 and the protrusion 329 of the housing 301 secures the removable cover 302 in the housing 301. The axial plug 368 extends inwards and through and seals the opening 361 of the applicator 309 and the distribution hole 319 of the housing 301, thus preventing leakage and / or drying of the fluid in the reservoir 317.
[0051] Referring now to figures 6 and 11 simultaneously, collar 332 will be described in more detail. Collar 332 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 332 can be formed of a hard molding plastic. Moldable hard plastics include polymers and copolymers of ethylene, propylene, butadiene, vinyl compounds and polyesters such as polyethylene terephthalate.
[0052] In the illustrative embodiment, collar 332 is a ring-like structure comprising an outer surface 333 and an inner surface 3345. The inner surface 334 forms an axial passageway 335 that extends through the entire collar 332. Axial passageway 335 extends along the geometric axis BB so that the drive screw 311 of the alternator 306 can extend through it. The collar 332 comprises a flange part 336, a plug part 337 and a narrowing part 338. The narrowing part 338 extends from a shoulder 341 of the collar 332 disposed between the narrowing part 338 and the plug part 337. A depression 342, in the form of an annular groove, is provided on the outer surface 333 of the plug 337 part of collar 332.
[0053] When the distributor 300 is mounted, the collar 332 is coupled to the housing 301 as shown in figure 6. When the distributor 300 is mounted, the plug part 337 and the narrowing part 338 of the collar 332 are arranged inside the internal cavity 314 ( specifically the chamber 318) of the housing 301. The flange part 336 rests on the proximal end 315 of the housing 301, thus preventing excessive insertion of the collar 332 into the internal cavity 314. The flanges 331 of the housing 301 protrude into the depression 342 the plug part 337, thus combining to prevent the collar 332 from being removed axially from the housing 301. The coupling of the collar 332 to the housing 301 is carried out additionally ensuring that the tolerances are selected so that an interference fit is performed between the outer surface 333 of the collar 332 and the inner surface 313 of the housing. When coupled to housing 301, collar 332 is non-rotating with respect to housing 301. Obviously, other cooperative structures and connection techniques can be used to couple collar 332 to housing 301 so that relative rotation between the two is prevented.
[0054] In the illustrative embodiment, the narrowing part 338 is formed by a plurality of arcuate segments 239 that project axially from the plug part 337 and circumferentially surround the axial passage 335 (and the drive screw 311 when the distributor 300 is mounted) . Adjacent arcuate segments 239 are separated by a space 440. The nip part 338 is formed by segments 239 to provide radial flexibility to the nip part 338 so that a base part 340 of the drive screw 311 can pass through the part of narrowing 338 during assembly. During assembly, as the base part 340 of the drive screw 311 passes through the narrowing part 338, the segments 239 flex radially outward, thus allowing the base part 340 to pass through them. However, since the base part 340 of the drive screw 311 has passed completely through the narrowing part 338, the segments 239 engage radially inward, returning to their starting position and preventing the alternator 306 from being separated from the collar 332. In other embodiments, the narrowing portion 338 can be constructed as a continuous structure instead of a plurality of segments 239 if desired.
[0055] The narrowing portion 338 of the collar 332 further comprises an upper cam surface 339 comprising a plurality of axial extension cams 343. In the illustrative embodiment, the cams 343 are serrated tooth-shaped protuberances having inclined surfaces 344 ending at an apex 345 (figure 16b). Obviously, 343 cams can take a variety of different shapes, such as contoured, etc. The upper cam surface 339 is a wavy transverse surface in the exemplified embodiment. A depression / notch 346 is located between adjacent cams 343. As discussed in more detail below, the upper cam surface 339, together with the lower cam surface 347 of alternator 306, causes elevator 308 to alternate axially when the Relative rotary movement is created between the cam surfaces 339, 347.
[0056] While collar 332 is a separate component of housing 301 in the exemplary embodiment of dispenser 300, in other embodiments collar 332 can be integrally formed as a part of housing 301. In such embodiment, housing 301 itself will comprise the upper cam surface 339.
[0057] Referring now to figures 6 and 12 and 13, simultaneously, alternator 306 will be explained in more detail. As mentioned above, alternator 306 generally comprises driver 303, resilient element 310 and drive screw 311 and, in certain embodiments, is a unitary structure formed integrally. Alternator 306 is constructed from a material that is sufficiently rigid to provide the structural integrity necessary to perform the functions discussed below. In one embodiment, the alternator 306 may be formed of a hard moldable plastic. Suitable plastic ducts include polymers and copolymers of ethylene, propylene, butadiene, vinyl compounds and polyesters such as polyethylene terephthalate.
[0058] The alternator 306 extends from a proximal end 348 to a distal end 349 along the longitudinal geometric axis B-B. As mentioned above, the alternator 306 comprises the driver 303 which is located at the proximal end 349 of the alternator 306. The driver 303 comprises a distal part 350 and a plug part 351. The distal part 350 comprises projections / ribs 305 and provides the section of the grip 303 by means of which the user can rotate the alternator 306 with respect to the housing 301. When the distributor 300 is mounted the distal part 350 of the driver 303 protrudes axially beyond the proximal end 315 of the housing 301 while the plug 351 of driver 303 nests within collar 332.
[0059] The resilient element 310 is located axially between the driver 303 and the drive screw 311. In the exemplified embodiment, the resilient element 310 is of the laminated type. More specifically, in the illustrative embodiment, the resilient element 310 is formed by a plurality of curved rods 352 extending axially from the plug part 351 along a cylindrical part 353 of the drive screw 311 and in a way that differs from the axis longitudinal geometric BB. In other embodiments, the resilient element may take other forms and / or may be a separable component of alternator 306. For example, in certain embodiments, alternator 306 may be, without limitation, a helical bead, a separate laminated spring, a part elastomeric, and / or combinations thereof. The function of the resilient element 310 will be described in more detail below.
[0060] The drive screw 311 extends axially from the plug portion 351 of the driver 303 along the longitudinal geometric axis B-B. The drive screw 311 comprises a cylindrical part 353, a flanged base part 340 and a threaded part 354. The cylindrical part 353 extends axially from the plug part 351 of the driver 303 to the flange base part 340 and has a smooth outer surface. The threaded part 354 extends axially from the flanged base part 340 to the distal end 349 of the alternator 306 and comprises a helical protrusion 355 extending from the outer surface. The inclination of the helical protrusion 355 is selected so that the elevator 308 advances axially in the direction of the distribution hole 319 by a desired distance by rotating the drive screw 311 by a predetermined rotation angle, thus distributing a pre- selected fluid from reservoir 317.
[0061] The flanged base part 340 of the drive screw 311 extends radially outwardly from the longitudinal geometric axis BB ending in a lower cam surface 347. In certain other embodiments, such as one illustrated in figures 17 to 19b, the base part flange 340c of the drive screw 311c does not extend radially outwardly from the longitudinal axis BB in a more staggered shape. In addition, as exemplified in the embodiment of figures 17 to 19b, the driving screw 311c may additionally comprise a stop plate 390c located on the opposite side of the flanged base part 340c than the threaded part 354c. The stop plate 390c extends radially outwardly from the longitudinal geometric axis B-B and will rest on the shoulder part 341c of collar 332c to prevent excessive insertion of alternator 306c into collar 332c. Such excessive insertion of alternator 306c into collar 332c can damage the resilient element 310c due to excessive bending.
[0062] The lower cam surface 347 comprises a plurality of cams 356 extending axially from the lower cam surface 347. In the exemplified embodiment, the cams 356 are serrated teeth-like protrusions having inclined surfaces 357 ending at an apex 358 (figure 16b). Obviously, 356 cams can take a variety of different shapes, such as, contoured, etc. The lower cam surface 347 of the alternator 306 matches the upper cam surface 339 when the distributor 300 is mounted.
[0063] When distributor 300 is mounted, alternator 306 is rotatable with respect to housing 301. The drive screw 311 of alternator 306 extends through axial passage 335 of collar 332 and into chamber 318 of internal cavity 314. More specifically, the cylindrical part 353 of the drive screw 311 extends through the narrowing part 338 of the collar 332. The flanged base part 340 is located beyond the narrowing part 338 of the collar 332 so that the upper cam surface 339 of the collar 332 be aligned and in contact with the lower cam surface 347 of the alternator 306. The resilient element 310, in the form of rods 352, is pressed against the inner surface 334 of the shoulder part 341 of the collar 332, thereby orienting the surface bottom cam 347 of the alternator 306 downwards and for coincident surface contact with the upper cam surface 339 of the collar 332. However, the coincident surface contact between the upper and lower cam surfaces 339, 347 prevent the alternator 306 from being decoupled from the housing 301. In the illustrative embodiment, the resilient element 310 (in the form of rods 352) exerts an axial force on the alternator 306 in a second direction along the axis longitudinal geometric BB (that is, in a direction moving from the distal end 316 to the proximal end 315 of the housing 301).
[0064] With reference now to figures 6, 7 and 8 simultaneously, the elevator 308 and the extension element 307 will be described in more detail. The elevator 308 is disposed within the internal cavity 314 of the housing 301, thus dividing the internal cavity 314 into a reservoir 317 and a chamber 318. The reservoir 317 contains the desired fluid or product, which can be any active oral care agent or inactive. The oral care agent and / or its carrier can 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 fluid material having a low viscosity in certain embodiments. Any suitable fluid can be used in the present invention. For example, the fluid may include oral care agents such as whitening agents, including, without limitation, peroxide-containing teeth whitening compositions. Suitable peroxide-containing tooth whitening compositions are described in U.S. Patent No. 11 / 403,372, filed April 13, 2006, of this assignee, all of which are incorporated herein by reference. While a tooth 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 and, therefore, stored within the reservoir 317. Fluids contemplated include oral care agents that can be an active or non-active ingredient, including without limitation, antibacterial agents, oxidizing or whitening agents; enamel strengthening or repair agents, tooth erosion prevention agents, anti-sensitivity ingredients, gum health actives, nutritional ingredients, tartar control and stain ingredients, enzymes, sensitizing ingredients, flavoring or flavoring ingredients, refreshing ingredients oral, bad breath reduction agents; anti-attachment or sealant ingredients, diagnostic solutions, occlusion agents, anti-inflammatory agents, dry mouth relief ingredients; catalysts to improve the activity of any of these agents; dyes or aesthetic ingredients, and combinations thereof. The fluid in one embodiment is free of (that is, it is not) toothpaste. Instead, the fluid should provide supplemental oral care benefits in addition to merely brushing your teeth. Other suitable oral care fluids may include lip balm or other materials that are typically available in a semi-solid state.
[0065] i. uma quantidade eficiente de um aminoácido básico, na forma livre ou de sal, por exemplo, arginina, por exemplo, presente em uma quantidade de pelo menos cerca de 1%, por exemplo, cerca de 1 a cerca de 30%; por peso da formulação total, peso calculado como base livre; ii. uma quantidade eficiente de flúor, por exemplo, um sal de fluo reto solúvel, por exemplo, fluoreto de sódio, fluoreto de ou monofluorofosfato de sódio, fornecendo cerca de 250 a cerca de 25.000 ppm de íons de fluoreto, por exemplo, cerca de 1000 a cerca de 1500 ppm; e iii. um abrasivo, por exemplo, sílica, carbonato de cálcio ou fosfato dicálcio. In some embodiments, materials useful in the oral care 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. Various formulations would be useful to supply arginine to the user. An oral care composition, for example, a toothpaste, can be used comprising: i. an efficient amount of a basic amino acid, in free or salt form, for example, arginine, for example, present in an amount of at least about 1%, for example, about 1 to about 30%; by weight of the total formulation, weight calculated as free base; ii. an efficient amount of fluorine, for example, a soluble straight fluoride salt, for example, sodium fluoride, sodium fluoride or monofluorophosphate, providing about 250 to about 25,000 ppm of fluoride ions, for example, about 1000 at about 1500 ppm; and iii. an abrasive, for example, silica, calcium carbonate or dicalcium phosphate.
[0066] The dental treatment materials of the present invention can have a viscosity suitable for use in dental treatment applications and methods. As used here, "viscosity" should refer to "dynamic viscosity" and is defined as the shear stress ratio to AA strain rate as measured by the AR 1000-N Galvanometer from TA Instruments, New Castle, Delaware.
[0067] When measured at a 1 second "1 shear rate, viscosity may have a band with a lower end of the band generally about 0.0025 poise, about 0.1 poise, and more specifically about 75 poise, with the upper end of the strip being selected independently from the lower end of the strip and generally around 10,000 poise, specifically around 5000 poise, and more specifically around 1000 poise. Non-limiting examples of suitable viscosity ranges when measured at a rate 1 second'1 shear includes, about 0.0025 poise to about 10,000 poise, about 0.1 poise to about 5000 poise, about 75 poise to about 1000 poise, and about 0.1 poise at about 10,000 poise.
[0068] When measured at a shear rate of 100 seconds "1, the viscosity will have a band with the lower end of the band generally around 0.0025 poise, specifically around 0.05 poise, and more specifically around 7, 5 poise, with the top end of the strip being selected independently from the bottom end of the strip and generally around 1000 poise, specifically around 100 poise, and more specifically about 75 poise. Non-limiting examples of suitable viscosity ranges when measured at a shear rate of 100 seconds.sup.31 1 includes, about 0.0025 poise to about 1000 poise, about 0.05 poise to about 100 poise, about 7.5 poise to about 75 poise , and about 0.05 poise to about 1000 poise.
[0069] When measured at a shear rate of 10,000 seconds "1, viscosity will have a band with the lower end of the band generally around 0.0025 poise, specifically around 0.05 poise, and more specifically about 5 poise, with the top end of the strip being selected independently from the bottom end of the strip and generally around 500 poise, specifically around 50 poise. Non-limiting examples of suitable viscosity ranges when measured at a 10,000 second shear rate'1 include, about 0.0025 poise to about 500 poise, about 0.05 poise to about 50 poise, about 5 poise to about 50 poise, and about 0.05 poise to about 500 poise.
[0070] Each formulation contains a viscosity agent that adjusts the viscosity of the formulation to a level that allows effective flow from reservoir 317, through dispensing orifice 319, and out of opening 361 of applicator 309. This agent can be water, thickeners or thinners. The viscosity must be adjusted with respect to the dimensions of the dispensing orifice 319 (including length, internal cross-sectional area, shape, etc.), the composition of the applicator or other distribution channel used (i.e., hollow channel, porous channel, etc.). ) and the amount of force available to pressurize the reservoir 317.
[0071] The elevator 308 forms a hermetic seal between the reservoir 317 and the chamber 318. An outer surface 370 of the elevator 308 forms a lower end wall of the reservoir 317 while an internal surface 371 of the elevator 308 forms the upper end wall of the layer 318. The external surface 370 of the elevator forms a continuous and uninterrupted fluid limit that limits a lower end of the reservoir 317. The drive screw 311 does not protrude through the elevator 308, nor through the external surface 370, and extends into the reservoir 317. Otherwise, the drive screw 311 is completely isolated from reservoir 317 and never comes into contact with the fluid inside reservoir 317, even when elevator 308 is in a fully retracted state (as shown in figure 6).
[0072] The elevator 308 comprises a base part 371 and a plug part 373 extending axially from the base part 372 along the longitudinal geometric axis BB towards the dispensing hole 319. The plug part 373 comprises an internal cavity 374 having a closed upper end 375 and an open lower end 376. When the distributor 300 is mounted, and the elevator 308 is in a fully retracted position (as shown in figure 6), a distal part of the drive screw 311 nests within the internal cavity 374 of plug part 373 of elevator 308. However, as can be seen, the drive screw 311 does not yet penetrate through elevator 308 or its external surface 370. Additionally, the external surface 370 of elevator 308 can comprise more of a surface (as shown in figure 8). When the elevator is axially advanced through reservoir 317 and reaches a fully extended position (not shown) in which reservoir 317 has been substantially emptied of fluid, the plug portion 373 of elevator 308 nestles within section 317a of reservoir 317 having the reduced cross section.
[0073] The elevator 308 is non-rotating with respect to the housing 301, but can be axially moved 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 317 so that they have corresponding non-circular transverse shapes. Alternatively, in the modalities where circular cross sections are desired, the elevator 308 and the internal surface of the housing 301 can be provided with an interlocking / protruding groove that prevents relative rotation allowing axial translation. In yet another embodiment, such as that exemplified in figures 17 to 19b, the relative rotation between the elevator 308c and the housing 301c can be prevented by connecting an anti-rotation sleeve 395c to the elevator 308c. The anti-rotation sleeve 395c is non-rotating with respect to the housing 301c as a result of an interlocking groove / protrusion cooperation that is achieved between the inner surface of the housing 301c and the anti-rotation sleeve 395c.
[0074] The elevator is threadedly coupled to the drive screw 311 so that the relative rotation between the drive screw 311 and the elevator 308 advances the elevator 308 axially towards the dispensing orifice 319, thus expelling a volume of fluid from the reservoir 317 In the exemplified embodiment, the elevator 308 is threadedly coupled to the threaded part 354 of the drive screw 311 through the extension element 308, which will be described in more detail below. The elevator 308 additionally comprises an annular groove 377 formed on its internal surface 371 of the base part 372 for coupling to the extension element 307.
[0075] In the alternative embodiments, the elevator 308 can be screwed directly onto the threaded part 354 of the drive screw 311, thus eliminating the extension element 307. However, the extension element 307 may be preferred in some modes. that the elevator 308 does not have to be penetrated by the drive screw 311 while still allowing an adequate axial displacement distance from the elevator 308.
[0076] In the illustrative embodiment, the extension element 307 is a tubular sleeve structure that extends from a proximal end 378 to a distal end 379. However, in certain other embodiments, the extension element may be in the form of a structure , stringers or one or more elongated rods extending from a collar screwed to the elevator 308. The extension element 307 has an internal surface 380 that forms an axial passage 381 that extends through the entire extension element 307. The surface inner 380 comprises a screwed part 380a and an unscrewed part 380b. The threaded part 380a is located at the proximal end 378 of the extension element 307 and comprises a threaded surface that operatively combines with the threaded surface of the drive screw 311 when the distributor 300 is mounted. Additionally, when the distributor is mounted, and the elevator 308 is in the fully retracted position (as shown in figure 6), the drive screw 311 extends through the entire axial passage 380 of the extension element 380.
[0077] The distal end 379 of the extension element 307 comprises a flange 388. The elevator 308 is coupled to the extension element 307 by inserting the distal end 379 and flange 388 of the extension element 307 into the annular groove 377 of the elevator 308. Obviously, the coupling between the elevator 308 and the extension element 307 can be carried out in a variety of different ways, none of which limit the present invention. Additionally, in certain embodiments, the elevator 308 and the extension element 307 can be formed integrally as a unitary structure, rather than as separate components.
[0078] Referring now to Figures 6 and 16a and 16b simultaneously, the mechanism of action that the distributor 300 uses to distribute the fluid from the reservoir 317 while eliminating the leak will be described. As known to those skilled in the art, the axial advance of the elevator 308, which extends through the entire cross section of the reservoir 317, while only relieving the fluid through the orifice 319, will result in residual pressure in the reservoir, thus causing the fluid leaks. To prevent the leakage effect, the distributor 300 retracts the elevator 308 axially, in an alternating cycle after each predetermined increment of the axial advance forward of the elevator 308. This is accomplished by overlapping alternating axial displacements in the unidirectional axial advance of the screw feed 311 due to its threaded engagement with the extension element 307 (or the elevator 308).
[0079] Specifically, when the driver 303 is turned, the drive screw 311 is also turned. The rotation of the drive screw 311 causes the elevator 308 to axially advance a distance in a first axial direction along the longitudinal geometric axis BB (that is, in the direction moving from the proximal end 315 to the distal end 316 of the housing 301) due to the relative rotation between the extension element 307 and the driving screw 311, which are screwed together together as described above. Obviously, in the modalities in which the extension element 307 is omitted, said axial feed will be caused by the relative rotation between the elevator 308 and the driving screw 311, which would be screwed directly together or through the use of an intermediate structure. . However, in addition to the axial advance of the elevator 308 printed by the above mentioned screw coupling and relative rotation, the elevator is also subjected to an axial translation alternation due to the relative rotation between the upper and lower cam surfaces 339, 347 of the collar 332 and alternator 306.
[0080] As mentioned above, the upper cam surface 339 is non-rotatable with respect to housing 301. However, when the actuator 303 is rotated, the lower cam surface 347 of the alternator 306 also rotates. The relative rotation between the cam surfaces 339, 347 results in the cams 356 of the lower cam surface 347 of the alternator 306 rising the cams 343 of the upper cam surface 339 of the collar 332 until the apices 358, 345 of the cams 343, 356 are aligned (as illustrated in figure 16b). This ascent of the cams 343, 356 prints a translation axial advance / displacement component to the alternator 306, which, in turn, is transferred to the elevator 308 through its coupling to the drive screw 311. More specifically, as the actuator 303 is rotated in the direction causing the axial advance of the elevator 308 on the feed screw 311, based on the thread hand, the inclined surfaces 357 of the cams 356 will rise the stationary inclined surfaces 344 of the cams 343. The elevator 308, in turn, it will receive the axial advance movement of two separate components, the axial advance due to the relative rotation between the elevator 308 and the driving screw 311 and the axial advance due to the component of the inclined surfaces 344, 357 oriented in the axial direction. As the apexes 358 of the cams 356 are rotated beyond the apexes 345 of the cams 343, as shown in figure 16a, the alternator 306 will retract in an axial direction opposite to the forward direction as the cams 356 are pushed back in. of the depressions 346 by the orientation printed by the resilient element 310. By the movement of the alternator 306 in a direction that is put to the advance path, the elevator 308 retracts the fluid in the reservoir, and, thus, relieves the residual pressure caused by the step of advance.
[0081] It should be apparent that the axial displacement component, alternator 306, moves in both axial alternating forward and reverse steps equally. It should be noted, however, that the net advance of the elevator 308 is greater than the retraction, due to the unidirectional advance displacement caused by the relative rotation of the feed screw 311 and the elevator 308. This net advance provides the elimination of a predetermined amount of fluid.
[0082] The magnitude of the refraction required to reduce residual pressure so that leakage of fluid, or its components, does not occur varies with the thickness and pressure of the fluid and orifice area 319 with respect to elevator 308 and reservoir 317.
[0083] Additionally, when the resilient element 310 pushes the cam surfaces 339, 347 back into intimate contact after the tips 345, 358 have passed each other (that is, from the position shown in figure 16b to the position shown in figure 16a ), an audible click is made. This “click” informs the user that the oral care product has been distributed and allows the user to distribute an accurate and reproducible amount of the fluid.
[0084] Referring now to Figures 17 to 19b, an alternative embodiment of a fluid dispenser 300c according to a second embodiment of the present invention is exemplified. The fluid dispenser 300c is substantially identical to the fluid dispenser 300 of figures 3 to 16b in the most structural and functional aspects. Thus, in order to avoid redundancy, only those aspects of the fluid distributor 300c that are different from the fluid distributor 300 will be described below, with the understanding that the above discussion regarding fluid distributor 300 is applicable. Similar structural elements of the fluid distributor 300c and the fluid distributor 300 will be identified with similar numerical references with the addition of the alphabetical suffix “C”.
[0085] In addition to the components discussed above for fluid distributor 300, fluid distributor 300c additionally comprises an anti-rotation sleeve 395c to prevent relative rotation between elevator 308c and housing 301c during the rotation of driver 303c. The anti-rotation sleeve 395c is a hollow tubular structure having a first end that is connected to the elevator 308c. While not visible, a plurality of protrusions of axial extension are provided on the outer surface of the anti-rotation sleeve 390c which matches the axial extension grooves formed on the inner surface 313c of housing 301c. Thus, when the actuator 303c is rotated, thus rotating the alternator 306c (and its drive screw 311c), the elevator 308c is axially transferred due to the screwed coupling through the extension sleeve 307c and the elevator 308c is prohibited from turning with relation to the housing 301c by the anti-rotation sleeve 395c. In this way, the housing 301c and the internal cavity 317c can have a circular transverse shape. While in the exemplified embodiment the anti-rotation sleeve 390c is described as comprising projections and the inner surface 313c of the housing 301c comprises grooves, it should be understood that the anti-rotation sleeve 390c can be designed to include the grooves while the internal surface 313c of the housing 301c would comprise projections in certain other modalities. Furthermore, in other modalities, the projections may be in the form of simple protuberances that match the grooves of axial extension.
[0086] An additional difference between the fluid distributor 300 and the fluid distributor 300c is the structure of the alternator 306c. As mentioned above, the actuator 303c of the fluid distributor 300c is not integrally formed with the alternator 306c, but is instead a separate component connected non-rotatably to one end of the alternator 306c. In this embodiment, the driver 303c can be formed from a hard plastic or a thermoplastic elastomer. Obviously, other materials can be used if desired.
[0087] Alternator 306c further comprises a stop plate 390c extending radially from a stem portion 353c of alternator 306c. During assembly, the stop plate 390c prevents excessive insertion of the alternator 306c into collar 332c which can damage the resilient elements 352c by supporting the shoulder 341c of collar 332c. Furthermore, instead of contacting and interacting with the shoulder 341c of the collar 332 to create the orientation, the resilient elements 352c of the alternator 306c come into contact and interact with a distal edge 396c of an extension part 397c of the collar 332c. When assembled, the extension part 397c of the collar 332c projects from the distal end of the housing 301c.
[0088] As used throughout the description, ranges are used as a summary to describe each and every value that is within the range. Any value within the range can be selected as the end of the range. In addition, all references cited here are hereby incorporated by reference in their entirety. In the event of a conflict in a definition of this description and a cited reference, this description controls. While the above description and the drawings represent the illustrative modalities of the present invention, it will be understood that the various additions, modifications and substitutions can be carried out without departing from the spirit and scope of the present invention according to the appended claims. In particular, it will be clear to those skilled in the art that the present invention can be embodied in other specific shapes, structures, arrangements, proportions, sizes and with other elements, materials and components without departing from the spirit or essential characteristics thereof. Those skilled in the art will appreciate that the invention can be used with many modifications of structure, layout, proportions, sizes, materials and components and otherwise used in the practice of the invention, which are particularly adapted to specific environments and operational requirements without distance from the principles of the present invention. The modalities currently described are, therefore, considered in all respects as illustrative and not restrictive, the scope of the invention being defined by the appended claims and not limited to the above description or the modalities.

权利要求:
Claims (16)
[0001]
Oral care system (100) characterized by comprising: a toothbrush (200); and a distributor (300, 300C) detachably coupled to the toothbrush (200), the distributor (300, 300C) comprising: a housing (301, 301C) having a longitudinal axis and an internal reservoir (317, 317C) for containing a fluid; a dispensing orifice (319) in the housing (301, 301C) for dispensing fluid from the reservoir (317, 317C); a collar (332, 332C) inside the housing (301, 301C), the collar (332, 332C) comprising an axial passage (335) and a cam surface (339, 339C), the collar (332, 332C) being not rotating with respect to housing (301, 301C); an alternator (306, 306C) comprising a driver (303, 303C), a drive screw (311, 311C) extending through an axial passage (335) of the collar (332, 332C), and a cam surface (347 , 347C), the alternator (306, 306C) being rotatable with respect to the housing (301, 301C); a resilient element (310, 310C) which axially guides the alternator cam surface (347, 347C) (306, 306C) and the cam surface (339, 339C) of the collar (332, 332C) in coincident contact; and an elevator (308, 308C) forming an end wall of the reservoir (317, 317C), the elevator (308, 308C) being non-rotating with respect to the housing (301, 301C) and screwed onto the drive screw (311 , 311C); where the rotation of the driver (303, 303C) causes the elevator (308, 308C) to advance axially along the drive screw (311, 311C) in a first axial direction due to the relative rotation between the drive screw (311,311 C) and the elevator, (308, 308C) alternate axially due to the relative rotation between the cam surface (339, 339C) of the alternator (332, 332C) and the cam surface (347, 347C) of the collar (306, 306C ).
[0002]
Oral care system (100), according to claim 1, characterized in that the dispenser (300) further comprises an extension element (307, 307C) having a first end (379) coupled to the elevator (308, 308C ) and a second end (378) coupled screwed to the actuation screw (311, 311C), the extension element (307, 307C) being non-rotating with respect to the housing (301, 301C) and screwing the elevator (308, 308C) to the drive screw (311, 311C), and where the axial advance of the elevator (308, 308C) along the drive screw (311, 311C) is due to the relative rotation between the drive screw ( 311, 311C) and the extension element (307, 307C).
[0003]
Mouth care system (100), according to claim 1 or 2, characterized by the fact that the drive screw (311, 311C) does not penetrate through the elevator (308, 308C) to extend into the reservoir (317) when the elevator (308, 308C) is in a fully retracted position.
[0004]
Mouth care system (100) according to any one of claims 1 to 3, characterized in that the cam surface (347, 347C) of the alternator (306, 306C) is located on a flange base part of the screw drive (311, 311C).
[0005]
Mouth care system (100) according to any one of claims 1 to 4, characterized by the fact that the coincident contact between the cam surface (347, 347C) of the alternator (306, 306C) and the cam surface ( 339, 339C) of the collar (332, 332C) prevents the alternator (306, 306C) from being decoupled from the housing (301, 301C).
[0006]
Mouth care system (100) according to any one of claims 1 to 5, characterized in that the dispenser (300) further comprises an applicator (309) coupled to a distal end (316) of the housing (301 [ls1 ]), the applicator (309) comprising an opening (361) in fluid communication with the dispensing orifice (319).
[0007]
Oral care system (100), according to claim 6, characterized by the fact that the applicator (309) is formed of an elastomeric material.
[0008]
Mouth care system (100) according to any one of claims 1 to 7, characterized by the fact that the resilient element (310, 310C) is positioned between the alternator driver (303, 303C) (306, 306C) and the collar (332, 332C), the resilient element (310, 310C) exerting an axial force on the alternator (306, 306C) in a second axial direction opposite to the first axial direction.
[0009]
Mouth care system (100) according to any one of claims 1 to 8, characterized in that the resilient element (310, 310C) comprises at least one rod (352, 352C) extending from the driver (303 , 303C), the rod (352, 352C) formed integrally as part of the alternator (306, 306C).
[0010]
Mouth care system (100) according to any one of claims 1 to 9, characterized by the fact that the driver (303, 303C), the driving screw (311) and the resilient element (310, 310C) are integrally formed to form the alternator (306, 306C).
[0011]
Mouth care system (100) according to any one of claims 1 to 10, characterized in that the elevator (308, 308C) comprises a base part (372, 372C) and a plug part (373, 373C ) projecting from the base part (372, 372C), a part of the drive screw (311, 311C) nesting inside the plug part (373, 373C) of the elevator (308, 308C) when the elevator (308, 308C ) is in a fully retracted position.
[0012]
Mouth care system (100) according to claim 11, characterized in that the plug part (373, 373C) of the elevator (308, 308C) extends into a section of the reservoir (317, 317C) having a reduced cross-sectional area when the elevator (308, 308C) is axially advanced into a fully extended position.
[0013]
Mouth care system (100) according to any one of claims 1 to 12, characterized in that the actuator (303, 303C) comprises a distal part (350) that protrudes axially from a proximal end (315 ) of the housing (301, 301C).
[0014]
Mouth care system (100) according to any one of claims 1 to 13, characterized in that the dispenser (300, 300C) further comprises a removable cover (302) coupled to the housing (301, 301C), the cover removable (302) comprising an axial plug (368) which inserts and seals the dispensing hole (319).
[0015]
Mouth care system (100) according to any one of claims 1 to 14, characterized in that the dispenser (300C) further comprises an anti-rotation sleeve (395C) connected to the elevator (308C) that prevents the elevator (308C) ) rotate with respect to the housing (301C).
[0016]
Mouth care system (100) according to any one of claims 1 to 15, characterized by the fact that the alternator (306C) further comprises a stop plate (390C) that prevents excessive insertion of the alternator (306C) through the passage axial (335) of the collar (332C).

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法律状态:
2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2019-07-23| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2020-02-04| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|

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2020-06-02| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2020-08-25| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 22/12/2010, 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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PCT/US2009/069402|WO2011078863A1|2009-12-23|2009-12-23|Oral care system|

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PCT/US2009/069408|WO2011078864A1|2009-12-23|2009-12-23|Oral care system|

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USPCT/US2009/069402|2009-12-23|

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USPCT/US2009/069408|2009-12-23|

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US41051410P| true| 2010-11-05|2010-11-05|

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US61/410514|2010-11-05|

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US42344910P| true| 2010-12-15|2010-12-15|

---

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

---

US42343510P| true| 2010-12-15|2010-12-15|

---

US42339710P| true| 2010-12-15|2010-12-15|

---

US61/423449|2010-12-15|

---

US61/423397|2010-12-15|

---

US61/423414|2010-12-15|

---

US61/423435|2010-12-15|

---

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

---