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    • 专利摘要:
    SHAVING OR DEPILING CARTRIDGE WITH SKIN CONTACT ELEMENT. The present invention relates to a razor or shaving cartridge (10) comprising a housing (19); a bulkhead (16) located at the front of the housing; a cover (17) located at the rear of the housing; two or more blades (12) arranged in the housing between the bulkhead and the cover; a skin contact element (14) extending throughout the housing between two of said blades; and a plurality of projections (51) extending from a base (52) of said skin contact element, each having a surface that comes into contact with the skin (54), whose projections being spaced along the length of the skin contact element, where there is a gap of up to 2 mm between the adjacent projections, and the surface that comes into contact with the skin has a width that extends up to 35% of the gap.
    公开号:BR112013032466B1
    申请号:R112013032466-0
    申请日:2012-06-20
    公开日:2020-12-08
    发明作者:Oliver David Oglesby；Mark Peterson
    申请人:The Gillette Company；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    This invention relates to razors or shavers and, more particularly, razors or shavers cartridges having a skin contact element disposed between two blades. BACKGROUND OF THE INVENTION
    Many shavers or shavers for shaving or wet shaving on the market today have one or more shaving or shaving blades (many having three to six shaving or shaving blades) inside the shaving or shaving cartridge that are operationally attached to a handle, some shavers or shavers are disposable and some have a reusable handle. Shaving or shaving cartridges with multiple blades are described, for example, in US Patent No. 2005 / 0039337A1 published on February 24, 2005, and such a shaving or shaving cartridge is marketed as a shaving or shaving appliance Five-blade Fusion ™ by The Gillette Company.
    Although several blades provide improved shaving or epilation closer to the skin, in general, some performance problems may still arise. First, users may experience some discomfort during shaving or waxing. Second, shaving or waxing is still a relatively slow and inefficient process due to "lost" hair (hair that escapes the blades) and the difficulty of shaving or waxing in problem areas like the neck. Many shavers or shavers have a substantial amount of lost hair (for example, hair that is not cut at all or hair that is not cut close to the skin or on the skin line), despite the volume of hair that is cut.
    In addition, some areas (eg neck, chin and / or face) have been shown to be particularly difficult to shave or shave. In general, these areas are close to the skin, which are often oriented in different directions. These fur close to the skin can be close, flat or level against the skin. In many instances, the user has to shave or shave the same area repeatedly in an attempt to cut hair that has not been cut or that has not been cut close enough to the skin, resulting in greater skin irritation.
    The discomfort aspect may be due to the greater number and sharpness of the blades and the cumulative force or pressure on the skin, particularly in cartridges with three or more sharp blade edges.
    Some prior art solutions that attempt to lessen discomfort and at the same time maintain security and proximity provide, among other attributes, a smaller gap between the blades from one end to the other, often called the gap between the tips of the blades. Although such a reduction is generally known to provide better skin management by reducing the bulging of the skin between blades, it is also known to reduce the ability to rinse off cut hair, skin particles, shaving cream and / or others debris between the blades as the narrower spans decrease the length of the rinse intervals between the blades.
    An alternative solution of the prior art to reduce discomfort by reducing the blade load was to increase the number of blades. Prior art orders introduce additional blades or elements attached to the blades. However, they interact with the hair so that the hair is shifted from an optimal cutting position when the blades engage the hair. No consideration is given to how to reduce the blade load and manage the bulging of the skin, while minimizing any interaction with the hair. Solid inter-blade elements or inter-blade elements that comprise a wide area of contact with the skin, such as those revealed in the art, can cause the hair to become trapped and consequently less efficient to cut and greater irritation. Thus, there is still a need to improve skin management without interaction with the hair. SUMMARY OF THE INVENTION
    The invention features a razor or shaving cartridge that comprises a housing; a bulkhead located at the front of the housing; a cover located at the rear of the housing; two or more blades arranged in the housing between the bulkhead and the cover; a skin contact element extending through the housing between two of said blades; and a plurality of projections extending from a base of said skin contact element, each having a surface that comes into contact with the skin, whose projections being spaced along the length of the skin contact element , where there is a gap of up to 2 mm between the adjacent projections, and the surface that comes into contact with the skin has a width (L) that extends up to 35% of the gap.
    The frequency of projections through the element that comes into contact with the skin provides points of contact with the surface being shaved or shaved. As the skin contact surface extends up to 35% of the range, sufficient support and control is provided on the skin surface, while still allowing enough space for the hair to pass through the skin contact element. Thus, the present invention allows the reduction of load on a razor or shaving cartridge without the addition of any extra razor, while minimizing the impact on the hair being shaved or shaved. BRIEF DESCRIPTION OF THE DRAWINGS
    Although the present specification ends with claims that show particularly and distinctly claim what is considered the basis of the present invention, it is believed that the present invention will be better understood by the following description, made in conjunction with the attached drawings, in which identical references are used to designate substantially identical elements, where:
    Figure 1 is a perspective view of a razor or shaving cartridge showing a skin contact element in the cartridge according to the present invention.
    Figure 1A is a perspective view of the razor or shaver cartridge of Figure 1 shown attached to a handle.
    Figure 2 is a cross-sectional view of the razor or shaving cartridge in Figure 1.
    Figures 3A to 3F are seen in perspective of possible modalities of skin contact elements according to the present invention.
    Figures 4A and 4B are seen in cross section of alternative modalities of razor or shaving cartridges of the present invention.
    Figures 5A and 5C are seen in cross section of alternative modalities of razor or shaving cartridges of the present invention.
    Figure 6 is a cross-sectional view of a conventional razor or shaving cartridge and respective blade exposures.
    Figure 6A is a cross-sectional view of a razor or shaving cartridge showing a skin contact element in the cartridge and the respective exposures of the blades of the present invention.
    Figure 6B is a side view of a razor or shaving cartridge of the present invention showing a skin contact element in the cartridge and the respective tangential angles of the blades.
    Figure 6C is a side view of a razor or shaving cartridge showing a skin contact element in the cartridge and the respective tangential angles of the blades according to an alternative embodiment of the present invention.
    Figures 7 to 10 are seen in perspective of possible modalities of skin contact elements according to the present invention. DETAILED DESCRIPTION OF THE INVENTION
    This invention relates to a razor or epilator cartridge in a razor or epilator for wet shaving or epilation having a skin contact element arranged between two blades within a blade array. The term "skin contact element" as used here, means a physical structure that generally does not cut hair or skin, but comes into contact, engages, controls, enhances, shakes or extends over the user's skin providing management of the skin (eg, reduction of the bulging of the skin) during shaving or epilation and comprising a plurality of projections. A "blade matrix" for use in the present invention is defined as a matrix of one or more razor or shaving blades (for example, generally several blades), each having a cutting edge, with each cutting edge being generally facing the same direction. The cutting edge of the blade or the cutting edge of the blade can be used interchangeably with the blade tip of the present invention, where the blade tip can represent a point on the edge of a blade. The innovative razor or shaving cartridge can be considered to have a "mixed blade matrix" with mixed functionality in the sense that there are sharp elements and skin contact elements in the matrix.
    Figure 1 shows a razor or shaving cartridge 10 with a blade array 12 comprising four blades, 12a, 12b, 12d and 12e, each having their respective cutting edges 13a, 13b, 13d and 13e, and an element skin contact 14 disposed between two of the blades 12b and 12d. In this way, the razor or shaving cartridge can be considered to have a "mixed blade matrix" with mixed functionality in the sense that there are sharp elements and skin contact element in the matrix.
    It should be noted that, in general, the shield 16 (and / or protective bar 16a) of a razor or shaving cartridge 10 arranged on the front of the cartridge is known to produce greater friction on the front of the cartridge when stretching the skin in front of the blades and desirably supporting or aligning the hair during the shaving or waxing process, while cap 17 is generally known to be a low-friction element located on the back of the cartridge allowing the skin to slide in addition to the back of the cartridge while helping to maintain skin stretch. The cap can, desirably, also provide lubrication, smooth sliding or other skin control.
    Although the four blades are shown in Figure 1, it should be understood that any number of blades, larger or smaller, can be fitted to the cartridge 10. The housing 19 of conventional razors or shavers includes, in general, the frame 15 and the bulkhead 16 and / or the protection bar 16a. The blades 12a, 12b, 12d and 12e and the skin contact element 14 are shown attached to the housing 19 with the clips 18a and 18b. The skin contact element 14 can be secured, mounted or otherwise coupled within the frame 15 of housing 19 by mechanical (eg spring-loaded, compression fitting), thermal, chemical or other means known to those skilled in the art in technique, but desirably in the same way as conventional blades. Other methods of assembling the skin contact element of the present invention will also be as described in detail below.
    The skin contact element 14 can advantageously be installed only as a regular or standard blade (for example, blade with blade holder or inclined blade) or can be installed having spring-loaded capability.
    Figure 1 shows the skin contact element 14 positioned at mid distance through the blade matrix 12, near or in the position of the standard 3 blade (or blade groove 15c, as shown in Figure 2) when viewed passing in the transverse direction of the cartridge 10 from bulkhead 16 towards cover 17. In one embodiment, the skin contact element takes the place of one of the blades and actually divides the cartridge into two units, cartridge unit 10a and cartridge unit 10b, a cartridge unit in front of the skin contact element 14 and a cartridge unit behind the skin contact element 14, respectively. The skin contact element 14 can be encircled in both cartridge units 10a and 10b or in general, it can be arranged anywhere between cover 17 and bulkhead 16 in cartridge 10. Furthermore, the contact element with leather can be supplied in addition to a standard blade array.
    Figure 1A shows the razor or shaver cartridge 10 of Figure 1 operably coupled to a handle 11 by means of interconnect member 11a to provide a functional razor or epilator 20. In the present invention, the razor or shaver may be entirely disposable or may include a reusable handle with a disposable cartridge.
    Now with reference to Figure 2, a side view is shown in cross section of Figure 1 in which it can be seen that the skin contact element can be arranged inside the groove 15c and can be centrally located in a matrix of blades 12 (for example, or an array of "mixed" slides 12). In embodiments, the skin contact element 14 is an autonomous or independent element and is not attached to another blade. However, it will be understood that the skin contact element may be attached to a blade or blade holder or may form an extension of a blade or blade holder.
    Now with reference to Figures 3A to 3C, several designs of skin contact elements 50 are shown within the scope of the present invention.
    In Figures 3A to 3C, the skin contact element 50a, 50b, 50c comprises a plurality of projections 51a, 51b, 51c extending from a base 52. The present invention contemplates various forms of projections 51a, 51b, 51c which can each be similar in construction.
    As can be seen in Figure 1, the skin contact element extends, in general, throughout the cartridge. Cartridges currently available on the market have lengths between 30 mm and 40 mm. The skin contact element (s) of the present invention can, in general, extend for approximately equal length to the blades.
    The interval between adjacent projections is measured from corresponding points in each projection, in a longitudinal direction along the cartridge. The projections have an interval 53a, 53b, 53c, of up to 2 mm that extend along the length of the skin contact element, preferably up to 1.75 mm and more preferably up to 1.5 mm. The skin contact surface 54a, 54b, 54c can be from about 0.10 mm to about 0.70 mm in width, and preferably about 0.2 mm to about 0.3 mm, from so that the surface that comes into contact with the skin extends up to 35% of the range, preferably up to 25% of the range and most preferably up to 15% of the range.
    The surface that comes into contact with the skin provides a point of contact with the skin, allowing the skin to be controlled. As the skin contact surface extends up to 35% of the range, sufficient support and control is provided on the skin surface, while still allowing enough space for the hair to pass through the skin contact element. Thus, the present invention allows the reduction of load on a razor or shaving cartridge without the addition of any extra razor, while minimizing the impact on the hair being shaved or shaved.
    With reference to an approximate view in Figures 3D through F, a detailed perspective view of two adjacent projections 51d, 51e, 51f is shown. A groove 55 can be defined between adjacent projections 51d, 51e, 51f having a width that allows free passage of hair. The skin contact element provides sufficient skin contact area to support the skin during shaving or epilation. Preferably, a plurality of projections results in a plurality of grooves with a width of 0.19 mm to 1.3 mm, preferably about 0.3 mm, to allow free passage of hair during shaving or epilation.
    The pair of adjacent projections 51d, 51e, 51f, as mentioned, defines the groove 55 which is configured to allow the passage of hair with little or no interaction with the hair, so that the hair is not captured, trapped or pulled by the projections 51d, 51e, 51f, which can cause discomfort. Slots 55 are spaced so as not to prevent hair. The projections 51d, 51e, 51f are also configured to reduce bulging of the skin within the grooves 55 and the pressure points at the ends of the grooves 55, which may occur if the projections 51d, 51e, 51f are excessively spaced from each other. Bulging of the skin can lead to the edges of the blades (for example, in particular the blade 12d, not shown) by unnecessarily cutting the skin and resulting in discomfort. The relatively large number of projections 51d, 51e, 51f, along the length of the skin contact element 50d, 50e, 50f, serves to distribute the force placed on the skin by the cartridge 10. As the size of the grooves 55 can also increase the number of hairs that pass through the grooves 55 of the skin contact element, this can increase the number of hairs that are appropriately cut by the edge of blade 13d of blade 12d (not shown), for example, if arranged according to Figure 1, for example, of the present invention.
    Each projection comprises an anterior face 56, a posterior face 57 and an upper face 58. The upper face forms at least part of the surface that comes into contact with the skin 54d, 54e, 54f, however in the modalities this also extends over the face of projections 51d, 51e, 51f. Each projection has a height measured from a base 52, up to the upper face 58, of projections 51d, 51e, 51f. Each projection has a depth as measured from the front face 56 of the projection to the rear face 57 of the projection. The upper face and the anterior face of the projections 51d, 51e, 51f can be joined by a curved section 59 that can be part of the surface that contacts the skin 54d, 54e, 54f. The projections 51d, 51e, 51f can comprise a substantially flat portion on the upper surface. each projection has a rear edge 57d ', 57e', 57f '.
    The skin-contacting surface 54d, 54e, 54f may have a width L of about 0.10 mm to about 0.70 mm and preferably about 0.2 mm to about 0.3 mm. The height, as measured from the base 52 to the top face 58, of the projection 51d, 51e, 51f can be from about 0.25 mm to about 1 mm and, preferably, about 0.50 mm. Each projection, in general, has a depth of about 0.3 mm to about 2.5 mm and preferably about 0.8 mm, as measured from an anterior face of the projection 53 to a posterior face of the projection 54.
    The projections 51a, 51b, 51c can comprise a curved section 59 of up to 0.3 mm in length that joins the front face and the top face. The projections 51d, 51e, 51f can comprise a substantially flat portion on the upper face up to 0.6 mm in length. The anterior edge 57 'of the projection 51d, 51e, 51f, can be at an angle θ of + 45 ° to -60 °, as measured from the upper face to the base. Preferably, the angle θ is + 10 ° to -30 °.
    The skin contact element of the present invention can be produced from any type of material such as, but not limited to, polymeric, elastomeric material, thermoplastic elastomers, urethanes, olefins, rubbers, metals, or any combination thereof . Elastomers such as silicone, fluorosilicone, polyisoprene, polybutadiene, polyisobutylene, copolymers such as styrene-ethylene-butylene-styrene-based thermoplastic elastomer (SEBS), styrene-ethylene-propylene-styrene-based thermoplastic elastomer (SEPS), base-based elastomer polyoxyethylene-polyurethane, or other polymers such as polyurethane, polystyrene and polyethylene, or rubbers such as acrylonitrile-butadiene, polyacrylate and natural rubber, or any combination thereof, are also contemplated in the present invention. In addition, the material of the skin contact element may include modifications of one or more of the above materials (for example, polymers and rubbers and their composites) with other materials.
    If produced from a polymeric material or other elastomeric material, the skin contact element can be molded by injection. If produced from metal, such as aluminum or stainless steel, the skin contact element can be machined or shaped by tools.
    In addition, materials for a skin contact element may include textile or fabric materials, natural materials (eg, wood), or metals coated or integrated with elastomeric or plastic materials.
    The skin contact element can include materials with lubricant, shaving aid or hair removal, or with exfoliation capability. The term "shaving or waxing aid material", as used here, means any composition for use on the skin and / or hair. Such compositions may include, but are not limited to, slippery agents such as hydrophilic polymers (for example, polyethylene / polystyrene oxide or PEO / PS), or agents for depilation, cleaning, cooling, inhibiting or accentuating hair growth, inhibiting hair growth of microbes, inhibition of drag, inhibition of wrinkles, hydration, improvement of skin tone or condition, medicinal purposes or any combination thereof. The agents can include, but are not limited to, ingredients such as aloe, vitamin E, lanolin, perfumes or glycolic acids.
    One factor that affects the way a blade is presented to the skin is the exposure or the amount of a blade that is pressed against or removed from the skin, affecting the load of the blade on the skin. Another factor that affects how a blade is presented to the skin is the distance between the elements (for example, between slides), which affects the bulging of the skin in front of the blade, and also affects the load of the blade on the skin. It is also known in shaving or waxing techniques that, in addition to exposures and gaps, skin and hair management can also be affected by many additional interrelated variables such as the number of blades in a razor or shaving cartridge, the types of slides and the angles of the slides in relation to the skin line. The skin contact element of the present invention has the ability to provide additional control of these interrelated variables in the slide matrix that affect skin management. For example, the skin contact element provides an improved control point for the blade load on the skin.
    In Figure 2, "rinsing intervals" (for example, intervals where they should flow through cuttings and debris and which generally represent the shortest distance between the blades or the blades and fixed points such as the bulkhead or cover) are provided before and after the skin contact element 14, as shown in the first rinse interval 23a and the second rinse interval 23b, respectively. The first rinse interval 23a can be in the range of about 0.05 mm to about 0.5 mm, preferably from about 0.1 mm to about 0.2 mm, and the second rinse 23b can range from about 0 mm (Figure 4A) to about 0.65 mm (Figure 4B), and preferably about 0.2 mm to about 0.5 mm. In general, standard razor or shaving cartridges have rinsing intervals (for example, effectively the shortest distance between blades) about 0.5 mm wide and have a primary gap between blades of about 0.65 mm ( for example, the distance between the bulkhead 16 and the first blade 12a). With a skin contact element 14 arranged in the cartridge 10, the spacing of the rinse interval can be reduced, especially if the blades are spaced closer together. The open grooves in the skin contact element will provide improved rinsing capacity and, thus, reduced spacing between the blades.
    The provision of a first rinse interval 23a before the skin contact element 14 allows any excess hair cut by the second blade 12b or other debris to flow into that interval 23a, preventing the obstruction of the blades at the rear of the cartridge. In addition, the second rinse interval 23b, arranged after the skin contact element 14, can provide an area into which the cut hairs flow (for example, those cut by the third blade 12d directly behind the contact element. with the skin 14).
    The first rinse interval 23a and the second rinse interval 23b may be the same width or one interval may be less than the other. For example, it may be desirable to design the first rinse interval 23a with a width smaller than that of the second rinse interval 23b, since the blade 12e may have more cut hairs and excess debris flowing between the contact element and the skin 14 and blade 12e.
    As shown in Figure 2, the gap between blade edges 22 between the cutting edge 13b of the blade 12b and the cutting edge 13d of the blade 12d with the element 14 arranged between them varies from about 1.00 mm to about 2, 50 mm and desirably about 2.10 mm. Thus, the gap 22 can be almost twice the length of a gap between conventional blade tips or an inter-blade gap between adjacent blades without any skin contact element 14 arranged between them, as shown, for example. For example, in the gap 24 of Figure 2 between the cutting edge 13a of the blade 12a and the cutting edge 13b of the blade 13b, which can be about 1.05 mm, or even more desirably about 0.95 mm.
    Although shown disposed in the 3 * position or median position of the blades of a razor cartridge or razor with five blades 10 in Figure 1, the skin contact element 14 of the present invention can be disposed in, near or in any blade slot or slot of a razor or shaving cartridge with any number of blades, as long as it is disposed between two blades. In a razor or shaving cartridge with five blades, the skin contact element 14 can be arranged in, near or in any of the 2 ', 3 * or 4' position or blade slots of a cartridge razor or shaving device that typically uses five blades with the other blade slots containing blades. With specific reference to Figures 5A and 5B, other possible locations of a skin contact element 14 of the present invention are shown. For example, the * skin contact element 14 can be arranged in the 2 position in the groove 15b, as shown in Figure 5A, and * accordingly, between the two blades 12a and 12c; or in the 4 position or groove 15d in Figure 5B between the two blades 12c and 12e. The skin contact element 14 is shown disposed in the 3 * position or groove 15c, as described above with respect to Figure 1; Thus, between two blades, blades 12b and 12d.
    The present invention further contemplates more than one skin contact element 14 disposed in the blade array 12 of the cartridge 10, as shown in the illustrative modalities of Figure 5C. For example, in Figure 5C, two skin contact elements 14a and 14b * are arranged in 2 * and 4 * positions (or blade grooves 15b and 15d), respectively.
    Generally, however, with little or no change in the cartridge frame 10 or its housing 19, a housing in general includes a frame 15 and a bulkhead 16, any desirable variation of blade types and numbers and one or more contact element with skin 14 can be provided in the present invention.
    It is known that the exposure of the blade can affect the load of the skin on the blade, which, in turn, can affect shaving or hair removal attributes such as comfort, safety and efficiency. In this way, now with reference to Figure 6, exposures of the blades of a traditional razor or shaving design 40 with several blades or a blade matrix 12 are shown (for example, without a skin contact element arranged in the matrix of blades 12), exposures that are defined by the positioning of the individual blades (12a to 12e) in relation to the screen 16 and / or the protection bar 16a and the cover 17, in which the screen / protection bar and the cover provide the first and second skin control points, respectively. In this way, exposure can be determined by drawing a reasonably straight line 44a (an imaginary or virtual skin line) through the lid 17 and the screen 16, and noting the location where the edges of slides 13a to 13e (or tips of the blades) are in relation to this straight line 44a.
    The blades, as arranged together in Figure 6, provide progressive geometry as described in US Patent Nos. 6,212,777 and 6,216,349. Consequently, as is known in the art, based on the assumption that the skin can be generally flat or in a reasonably straight line between the protection bar 16a and the cover 17, as shown by the virtual skin line 44a, this positioning of the blades can be used to produce a negative blade exposure 43 on the blade 12a since the blade 12a is below the level of the protective bar 16a, a neutral blade exposure 42 on the blade 12c once the blade 12c is in the same level or plane of the protection bar 16a or cover 17, and a positive blade exposure 41 as shown for blade 12e since the tip of blade 12e is above cover 17. Additionally, blade 12b may have a negative exposure and the slide 12d a positive exposure as shown face to face on virtual skin line 44a.
    The negative exposure 43 for slides 12a and 12b may preferably be in the range of about - 0.18 mm to about -0.01 mm and, more preferably, of about -0.07 mm , while the positive exposure 41 for slides 12d and 12e may preferably be in the range of about 0.18 mm to about 0.48 mm, and more preferably, about 0.33 mm .
    In general, the existence of positive and negative exposures in the slide matrix can be preferable, since slides with some negative exposure can offer better protection to the skin and also cut hair in an ideal way, and slides with some positive exposure can better release of captured hair. However, it may also be preferable to have neutral or zero value exposures throughout the matrix so that the skin is only slightly touched on the surface, substantially minimizing contact with the blades and, consequently, optimizing shaving or waxing attributes such as comfort and safety.
    As can be seen, a slide with positive exposure, like slide 12e in Figure 6, can generally push skin line 44b up and away from virtual line 44a, producing more load on the blade tip, while a slide with negative exposure , like the blade 12a in Figure 6, can generally be on the skin line 44b to bulge into the cartridge and come into contact with the blade 12a itself, instead of the blade 12a forcing against the skin or the skin line 44a . This illustration demonstrates that it may probably be easier to control the flow of the skin near the bulkhead / protection bar and near the lid, which represent fixed points or controls over which the skin flows. Based on these concepts, in general it can be seen that this geometric control can become less precise the further away a blade is from the cover 17 or the bulkhead 16 / protection bar 16a. Thus, in many instances, halfway through a cartridge 10 or near the center of a blade array 12 there may be an area where a loss of definite control of the skin may occur.
    Although conventional razors or shavers adequately control the flow of skin and hair throughout the razor or shaver cartridge or through the blade array, the addition of one or more skin contact elements within the blade array 12 (desirably located in the central region) advantageously inserts at least one more control point for the skin, thus allowing greater control over the geometry of individual slides or small groups of slides, fine adjustment of the bulging of the skin, exposure and also load at the tip of the blade for improved comfort and cutting of hair (for example, in proximity and number) and, consequently, shaving or waxing performance, as described below.
    It should be noted that in the modalities described above in Figure 5C, where two skin contact elements 14a and 14b are inserted in the slide matrix, two complementary control points are provided through these skin contact elements in addition to the points for controlling the bulkhead 16 and the lid 17. Furthermore, the present invention can theoretically contemplate a modality of a razor or shaving cartridge that has minimized or possibly nonexistent structures of the bulkhead 16 or lid 17 (not shown) .
    Now, with reference to Figure 6A, the addition of at least one skin contact element 14 generically in the middle of the slide matrix 12 of Figure 6, effectively provides a central or third control point (in addition to the first and the according to control points of the bulkhead and the cover, respectively), thereby granting a desired or greater manipulation of the skin load of a single blade or a group of blades. With a third control point, there can actually be two skin lines. For example, in Figure 6A, with reference to the virtual skin lines, there may be a virtual skin flow line 44a 'between the protection bar 16a and the non-cutting element 14 and a virtual skin flow line 44a' between the skin contact element 14 and cap 17.
    The skin contact element 14 can be arranged on the same plane as the blades 12a, 12b, 12d and 12e of the blade array 12 or on a different plane, or any combination of these conditions. The skin contact element 14 can also be arranged in the same plane as the blades 12b and 12d, but not in a different plane than the plane of the blades 12a or 12e. This latter arrangement would provide a neutral exposure for blades 12b and 12d in relation to the skin contact element 14 and can reduce the load on the tip of the blade on the skin close to the area of the skin contact element since these blades they can only lightly touch the skin.
    It may also be preferable to adjust the slide exposures so that the slide 12d is adjusted to a negative exposure in relation to the skin contact element 14. For example, as shown in Figure 6A, the slide exposures 12a, 12b , 12d and 12e of the blade array 12 are made similarly to those in Figure 6, in relation to each other, but the presence of the skin contact element 14 between the blades 12b and 12d and its disposition slightly higher than one or both of the blades 12b or 12d, preferably 0.05 mm higher, provides not only a fixed control point, but also a negative exposure for those lower blades. Thus, just after the blade 12b, the skin contact element will force the skin line 44b over its upper surface 14a, as shown in Figure 6A, and can desirably prevent the hair H from being pulled down. For illustrative purposes, only one by the H is shown in Figure 6A. The negative exposure of the blade 12d in relation to the skin contact element 14, which may desirably be up to about 0.2 mm, may, depending on the shaving or hair removal course, pass the skin contact element 14 and come into contact with the blade 12d behind it, desirably minimize the contact of the blade 12d's with the skin 44b, or effectively mask the skin, allowing the contact of the blade 12d to be substantially only with the hair H. This, in turn, desirably allows the H hair is also cut at a point H1 closer to the skin, so that a longer length of each hair is cut, improving the extent to which the lost hair is cut and also increasing the number of lost hair that is cut and therefore , improving the user's perception of the result of shaving or waxing (for example, the tactile sensation of the skin will be softer right after shaving or waxing).
    With the presence of a skin contact element in the slide matrix, all slides can preferably be substantially prevented from coming into contact with the skin (for example, improved comfort, sliding and safety), but the elevation in the hair height provides greater contact of the blade with the hair, combined with minimal or none of the blades contacting the skin (for example, especially next to the blade 12d behind the skin contact element 14, as described above), optimizes cutting the hair.
    However, if the skin contact element 14 of Figure 6A were arranged so that there was a neutral or zero exposure of the slide in relation to each of the slides in the slide array 12 (for example, so that the slides and the skin contact elements only lightly touch the skin), attributes such as comfort, slip and safety of shaving or waxing would also be improved during shaving or waxing.
    In addition, the presence of one or more skin contact elements arranged in the blade matrix can advantageously allow the use of sharper blades (for example, with low cutting forces) or other blade configurations, without which, in a conventional razor or shaver, the blades can be excessively sharp (for example, offering dangerous cutting risks) or uncomfortable for users. For example, a very sharp blade may preferably be arranged in the blade position directly behind a skin contact element (for example, blade 12d).
    The inter-blade span of the present invention can be in the range of about 0.5 mm to about 2 mm. Preferably, the inter-blade span is 0.95 mm to 1.05 mm.
    With the knowledge that the blade may substantially not come into contact with the skin, or just lightly touch the skin, as shown in Figure 6A, with a neutral or negative exposure, for example, the blades after the skin contact element of the present invention can also be modified to include even sharper blades and / or blades with a "tangential blade angle" (BTA) greater than conventional blade arrays, the latter being shown in Figure 6C.
    With particular reference to the blade tangential angle (BTA), it is well known that it means the angle between the blade and the skin line. Increasing this angle may also allow the second stage to capture what a more conventional first stage or cartridge unit 10a may have ordered. However, BTA adjustments require some prior project planning as it is generally known that a larger BTA can optimize proximity (for example, more by cut), but typically at the expense of comfort (for example, blades can drag on the skin and damage it), and in contrast, a smaller BTA can optimize comfort, but typically to the detriment of proximity.
    With respect to BTAs, Figures 6B and 6C illustrate two configurations of the present invention. In Figure 6B, the tangential angle of the blade 47 can be in a range of about 10 to 24 degrees with respect to the skin line 44b and can preferably be about 22.5 degrees. Figure 6B can be representative of a BTA that can be found in the configuration of Figure 6A.
    In Figure 6C, the BTA 48 can be in a range of about 25 to 40 degrees from skin line 44b and can preferably be about 28 degrees. In addition, Figure 6C is shown with narrow spans, similar to the spans of Figure 6B. The narrow span and increase in BTA shown in Figure 6C over Figure 6B, together with the negative exposure 43 of at least blade 12d, can preferably provide an enhanced load at the tip of the blade on the skin and optimize the numbers of hairs that are cut without damage to the skin.
    Such a cartridge can advantageously provide an application of the skin contact element of the present invention. For example, a multistage cartridge can be specifically designed to have different functionality before and after a centrally located skin contact element and therefore be intended for different types of hair and / or different hair areas (for example, neck, chin, face, body). For example, cutting difficult hair close to the skin can be improved with the configuration in Figure 6C.
    Thus, with the configuration of a cartridge with the skin contact element (s) of the present invention, providing a generally central control point, a balance of the various interrelated variables, such as blade types, angles , spans, exposures and number of blades in relation to control points such as the skin contact element, the screen and the cover, can be important to create ideal designs that will not damage the skin and at the same time cut hairs efficiently .
    The presence of the skin contact element or control point of the present invention provides a wider range of possibilities for fine-tuning these interrelated variables than is allowed for conventional razor or epilator cartridges and thereby , can provide more benefits.
    As mentioned above, the sharpness and the desired angles of the blades can be increased, the gaps can be reduced and the exposures can be neutral or negative to avoid damage to the skin and cut more hair (both in length and in quantity). In addition, the skin contact element should preferably allow skin and hair to pass through without generating high friction, thereby maintaining the skin contact element as a substantially low friction element in the blade matrix.
    Figure 7 shows the skin contact element 50j formed, preferably, as a modified or extended blade support produced from any material, but which advantageously comprises the same type of metal conventionally used for a blade support. The downward pointing arrows in Figure 7 indicate the top-to-bottom charge of the skin contact element 50j and the blades 12a, 12b, 12d and 12e inside the cartridge 10.
    Although the skin contact elements described so far are generally loaded or installed in the blade or groove positions from the top of the blade matrix or cartridge (for example, similar to the installation of a razor or shaving blade ), the present invention is not limited to the insertion of skin contact elements in conventional blade positions or blade slots.
    Other methods of fabricating a skin contact element for installation within a sheet matrix will be presented below.
    The skin contact element of the present invention can, for example, be loaded onto the blade array 62 through at least one hole, opening or groove 65a, arranged on at least one side of the cartridge frame 65, as shown in Figure 8. Orifice 65a can preferably be dimensioned and structured to allow effortless insertion and support of the skin contact element 64 in its place within the blade matrix 62 and, consequently, inside the device apparatus cartridge. shaving or shaving 60.
    Until now, the skin contact element of the present invention has been described as an independent, isolated, or separable element or elements, very similar to the razor or shaving blades themselves. Since the element of the present invention is a skin contact element, alternative methods for producing such skin contact elements in a razor or shaving cartridge may also be within the scope of the present invention. Such alternative embodiments of the present invention are described below.
    Now with reference to Figure 9, one of these alternative exemplary embodiments of the present invention is shown including at least one skin contact element 74 formed as a portion of the frame 75 as shown in the close view of the frame 75 in Figure 9. For example, the frame 75 can be injection molded to include at least one skin contact element 74, preferably positioned longitudinally anywhere on the cartridge, as described above generically with respect to Figures 1 to 3. The contact element with the leather can also be attached to the frame via a snap fit or other known connection. The skin contact element 74 can be coupled to the frame 75 using other mechanical, thermal or chemical methods known to those skilled in the art. It should be noted that the skin contact element, although formed together with the frame, can also be attached or integrated with a razor or razor blade. The skin contact element, although part of the cartridge frame, can be elastomeric or of another material.
    Additionally, in Figure 10, another alternative exemplary embodiment shows the skin contact element 84 formed as a portion of the clips 88a and 88b as a unitary structure 84a and, consequently, necessarily installed in the frame (or cartridge) when the clips are installed. Although not shown, more than one skin contact element can be formed as a portion of the clips, or the skin contact element can be formed as a portion of only one or the other clip 88a or 88b, respectively, of according to the present invention. Such a frame 84a can be produced by an element skilled in the art using the same methods as those used as conventional clips and can be machined, molded or formed by any practicable method.
    Although the skin contact element 74 can be formed as a portion of the frame 75 and the skin contact element 84 can be formed as a portion of the cleats 88a, 88b, both being formed as part of another apparatus component. shaving or shaving, they are generally not fixed or integrated with any of the blades, but this is contemplated within the scope of the present invention. The advantages of shaving or hair removal attributed to the condition that there is at least one element of skin contact within the blade matrix remain unchanged.
    In addition, it should be noted that the skin contact element of the present invention can be used in any type of razor or shaving cartridge and, therefore, naturally in shavers or shavers for men and women.
    The dimensions and values presented in the present invention should not be understood as being strictly limited to the exact numerical values mentioned. Instead, unless otherwise specified, each of these dimensions is intended to mean both the mentioned value and a range of functionally equivalent values around that value. For example, a dimension displayed as "40 mm" is intended to mean "about 40 mm".
    权利要求:
    Claims (10)
    [0001]
    1. A razor or shaving cartridge, comprising: a housing (19); a bulkhead (16) located at the front of the housing; a cover (17) located at the rear of the housing; two or more blades (12) arranged in the housing between the bulkhead and the cover; FEATURED for understanding: a skin contact element (14, 50) extending throughout the housing between two of said blades, in which said skin contact element is not attached to any of said blades (12) arranged in the housing (19), and in which a rinsing interval (23) is provided before and after the skin contact element; and between 40 and 150 projections (51) extending from a base (52) of said skin contact element, each having a surface that comes into contact with the skin (54), the projections being spaced at the along the length of the skin contact element, where there is a gap (53) of up to 2 mm between the adjacent projections, and the surface that comes into contact with the skin has a width (L) that extends up to 35 % of the interval; and wherein each projection has a depth between 0.3 mm to 2.5 mm as measured from an anterior face (56) of the projection to a posterior face (57) of the projection.
    [0002]
    2. Shaving or shaving cartridge according to claim 1, CHARACTERIZED in that the skin contact element comprises between 40 and 80 projections.
    [0003]
    3. Shaving or shaving cartridge according to claim 1, CHARACTERIZED in that the surface that comes into contact with the skin is 0.10 mm to 0.70 mm wide (L), preferably 0.2 mm to 0.3 mm.
    [0004]
    4. Shaving or shaving cartridge according to claim 1, CHARACTERIZED by the fact that the surface that comes in contact with the skin extends up to 25% of the range.
    [0005]
    5. Shaving or shaving cartridge according to claim 1, CHARACTERIZED in that it comprises grooves (55) between adjacent projections, where the grooves have a width between 0.19 mm to 1.3 mm.
    [0006]
    6. Shaving or shaving cartridge according to claim 1, CHARACTERIZED for each projection having a depth of 0.8 mm, as measured from an anterior face (56) of the projection to a posterior face (57) of the projection.
    [0007]
    7. Shaving or shaving cartridge according to claim 1, CHARACTERIZED in that the projections comprise a curved section (59) of up to 0.3 mm in length that joins the front and top faces, and in which the projections comprise a substantially flat portion on an upper face (58) up to 0.6 mm in length.
    [0008]
    8. Shaving or shaving cartridge according to claim 1, CHARACTERIZED in that the distance between two adjacent blade edges is less than 1.0 mm.
    [0009]
    9. Shaving or shaving cartridge according to claim 1, CHARACTERIZED in that the projections have a height of 0.25 mm to 1.00 mm.
    [0010]
    10. Shaving or shaving cartridge according to claim 1, CHARACTERIZED by the blade tangential angle (48) of the blade after the skin contact element is in the range of 25 to 40 degrees.
    类似技术:
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    同族专利:
    公开号 | 公开日
    JP5739064B2|2015-06-24|
    CN103619548A|2014-03-05|
    AU2012273142A1|2014-01-16|
    US9415522B2|2016-08-16|
    CN103619548B|2017-02-08|
    EP2537648B1|2016-04-20|
    RU2572114C2|2015-12-27|
    RU2013156463A|2015-07-27|
    MX344689B|2017-01-04|
    PL2537648T3|2017-01-31|
    CA2838085A1|2012-12-27|
    WO2012177677A1|2012-12-27|
    US20120317818A1|2012-12-20|
    BR112013032466A2|2017-01-31|
    EP2537648A1|2012-12-26|
    ZA201400402B|2016-10-26|
    JP2014524790A|2014-09-25|
    MX2013015179A|2014-07-09|
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-10-29| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-03-24| B07A| Technical examination (opinion): publication of technical examination (opinion)|
    2020-08-18| B09A| Decision: intention to grant|
    2020-12-08| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/06/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP11170574.5|2011-06-20|
    EP11170574.5A|EP2537648B1|2011-06-20|2011-06-20|Razor cartridge with skin contact element|
    PCT/US2012/043211|WO2012177677A1|2011-06-20|2012-06-20|Razor cartridge with skin contact element|
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