• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A shaving razor handle 14 with an elongated gripping portion 16 at a first end 18. A cartridge interconnector 22 at a second end 20 of the elongated gripping portion has a platform 28 with an upper surface 46 and an opposing lower surface 48 that defines an included angle of about 35 degrees to about 60 degrees. A distal end 30 of the cartridge interconnector extends from the platform. The distal end has a skin facing surface 32 with a pair of side walls 34, 36 connected by a pair of curved lateral end walls 38, 40. The cartridge interconnector pivots relative to the elongated gripping portion.
    公开号:EP3708314A1
    申请号:EP20170647.0
    申请日:2019-03-28
    公开日:2020-09-16
    发明作者:Jack Anthony Washington；Matthew Michael Long；Robert Harold Johnson；Steven Michael Bourque
    申请人:Gillette Co LLC；
    IPC主号:B26B21-00
    专利说明:
    [0001] The present invention relates to wet shaving safety razors and more particularly to shaving systems having handles and replaceable cartridges. BACKGROUND OF THE INVENTION
    [0002] In general, a cartridge or blade unit of a safety razor has at least one blade with a cutting edge which is moved across the surface of the skin being shaved by means of a handle to which the cartridge is attached. Some shaving razors are provided with a spring biased cartridge that pivots relative to the handle to follow the contours of the skin during shaving. The cartridge may be mounted detachably on the handle to enable the cartridge to be replaced by a fresh cartridge when the blade sharpness has diminished to an unsatisfactory level, or it may be attached permanently to the handle with the intention that the entire razor be discarded when the blade or blades have become dulled. Razor cartridges usually include a guard which contacts the skin in front of the blade(s) and a cap for contacting the skin behind the blade(s) during shaving. The cap and guard may aid in establishing the so-called "shaving geometry", i.e., the parameters which determine the blade orientation and position relative to the skin during shaving, which in turn have a strong influence on the shaving performance and efficacy of the razor. The cap may comprise a water leachable shaving aid to reduce drag and improve comfort. The guard may be generally rigid, for example formed integrally with a frame or platform structure which provides a support for the blades. Guards may also comprise softer elastomeric materials to improve skin stretching.
    [0003] Shaving systems often consist of a handle and a replaceable cartridge in which one or more blades are mounted in a plastic housing. After the blades in a cartridge have become dull from use, the cartridge is discarded, and replaced on the handle with a new cartridge. These types of shaving systems that utilize a variety of connection schemes to affix the cartridge to the handle have become popular. The connection scheme allows the consumer to easily, repeatedly, efficiently and intuitively load and remove the new and used cartridges from the handle and provides the necessary retention forces to maintain the integrity of the handle-to-cartridge attachment during shaving.
    [0004] The connection scheme must be robust enough to provide the necessary retention forces to maintain the integrity of the handle-to-cartridge attachment during shaving. The attachment of a razor cartridge to razor handle can provide sufficient retaining force to secure the razor cartridge to the razor handle over a wide variety of shaving conditions. Some shavers use very high forces when shaving and some razors may have a hair trimming system mounted on the side or back of the razor cartridge. In contrast, razors that use razor cartridges that are releasably connected, can provide low attachment and release forces to facilitate easy changing of cartridges by a shaver.
    [0005] The razor cartridge of many razors can also be in pivotal relationship with the razor handle. Most existing razors typically provide the mechanism that enables this pivot relationship on the razor cartridge or at the interface of the razor cartridge and razor handle. These pivot mechanisms can be expensive to manufacture and can represent a significant fraction of the total manufactured cost of a razor cartridge. Accordinlgy, there is a need for a simpler, less expensive, more intuitive and reliable shaving handle-to-cartridge connection. SUMMARY OF THE INVENTION
    [0006] In one aspect, the invention features, in general a shaving razor handle with an elongated gripping portion at a first end. A cartridge interconnector at a second end of the elongated gripping portion has a platform with an upper surface and an opposing lower surface that defines an included angle of about 35 degrees to about 60 degrees. A distal end of the cartridge interconnector extends from the platform. The distal end has a skin facing surface with a pair of side walls connected by a pair of curved lateral end walls.
    [0007] In another aspect, the invention features, in general a shaving razor handle with an elongated gripping portion having a first end. A cartridge interconnector at a second end of the elongated gripping portion has a platform with a shoulder and a distal end extending from the platform that has a skin contacting surface. A height of the distal end from the shoulder of the platform to the skin facing surface is about 0.5mm to about 3mm and a distance from the shoulder of the platform to a ledge on an upper surface of the platform is about 3mm to about 6mm.
    [0008] In another aspect, the invention features, in general a shaving razor handle with an elongated gripping portion having a first end. A cartridge interconnector at a second end of the elongated gripping portion has a platform with an upper surface and an opposing lower surface that defines an included angle of about 35 degrees to about 60 degrees. A distal end having a skin facing surface extends from the platform. The lower surface of the platform and a side wall of the distal end define an included angle of about 125 degrees to about 150 degrees. BRIEF DESCRIPTION OF THE DRAWINGS
    [0009] Other features and advantages of the present invention, as well as the invention itself, can be more fully understood from the following description of the various embodiments, when read together with the accompanying drawings, in which:FIG. 1 is a perspective view of a shaving razor system according to one possible embodiment of the present invention. FIG. 2 is a partial assembly view of the shaving razor system of FIG. 1. FIG. 3A is a front partial view of the shaving razor handle of FIG. 2 FIG. 3B is a cross sectional view of the shaving razor handle, taken generally along the line 3B-3B of FIG. 3A. FIGS. 4A-4C are partial side views of the shaving razor handle of FIG. 2. FIG. 5 is a front view of a cartridge interconnector of the razor handle of FIG. 2. DETAILED DESCRIPTION OF THE INVENTION
    [0010] Referring to FIG. 1, a perspective view of a shaving razor system 10 is shown. The shaving razor system 10 may include a shaving razor cartridge 12 mounted to handle 14. The shaving razor cartridge 10 may be removable or permanently mounted to the handle. For example, the shaving razor cartridge 12 may be mounted detachably on the handle 14 to enable the shaving razor cartridge 12 to be replaced by a fresh shaving razor cartridge 12 when the blade sharpness has diminished to an unsatisfactory level, or it may be attached permanently to the handle with the intention that the entire razor be discarded when the blade or blades have become dulled. The shaving razor handle 14 may have an elongated gripping portion 16 with a first end 18 (e.g., distal end) and a second end 20 (e.g., proximal end).
    [0011] Referring to FIG. 2, a partial assembly view of the shaving razor system 10 of FIG. 1 is shown with the cartridge 12 detached from the shaving razor handle 14. The shaving razor handle 14 may have a cartridge interconnector 22 at the second end 20. The cartridge interconnector 22 may pivot relative to the elongated gripping portion 16 of the shaving razor handle 14. Accordingly, it is not necessary for the cartridge interconnector 22 to be attached to the shaving razor cartridge 12 in order to pivot relative to the elongated gripping portion 16 of the handle 14. The shaving razor cartridge 12 may have a housing 24 that defines an opening 26 configured to receive the cartridge interconnector 22. The cartridge interconnector 22 may include a platform 28 that is positioned within the opening 26 of the housing 24. A distal end 30 may extend from cartridge interconnector 22 to a skin facing surface 32. It is understood that the skin facing surface 32 (e.g., skin contacting surface) may extend through the opening 26 of the shaving razor cartridge 12 to contact the surface of the skin to provide a benefit. Examples of benefits may include delivery of heat and/or a moisturizer to the surface of the skin of a user. In certain embodiments, the skin facing surface 32 may extend completely through the housing 24. However, the skin facing surface 32 may or may not directly contact the skin.
    [0012] Referring to FIG. 3A, an enlarged front view of the catridge interconnector 22 on the handle 14 is illustrated. The skin facing surface 32 may have a pair of side walls 34 and 36. The side walls 34 and 36 may be parallel to each other. The side walls 34 and 36 may be interconntected by a pair of curved lateral end walls 38 and 40. For example, the pair of curved end walls 38 and 40 may have a radius of about 1.25mm to about 2mm. The curved lateral end walls 38 and 40 may provide a more precise fit with the shaving razor cartridge 12 (FIG. 2) by minimizing gaps between the razor handle 14 and the razor cartridge 12 thus minimizing small radii and corners that are difficult to manufacture in the mating surfaces of two components. Even small gaps between the razor cartridge and the cartridge interconnector 22 may allow for the accumulation of hair and shaving debris, which may be difficult to rinse away without disconnecting the shaving razor cartridge 12 from the handle 14. Furthermore, the curved end walls 38 and 40 may be less prone to binding and jamming within the opening 26 of the housing 24 (FIG. 2), thus decreasing the required forces to attach and eject the razor cartridge 12 from the handle 14.
    [0013] The skin contacting surface may have a lengh "L1" extending between the pair of curved lateral end walls 38 and 40 of about 27mm to about 35mm. The skin facing surface 32 may have a width "w1" extending between the side walls 34 and 36 of about 2.5mm to about 4mm. The skin facing surface 32 may have a length to width ratio of about 5 about 13 and more preferably about 9 to about 11. The size and the length to width ratio of the skin facing surface 32 may be sufficient to provide a consumer noticeable benefit, such as heat or lubrication, while also taking up minimal space on the top surface of the shaving razor cartridge 12 (FIG. 2). In certain embodiments, the skin facing surface 32 may have an area of about about 70mm2 to about 90mm2.
    [0014] The distal end 30 may be stepped. For example, the platform 28 may include a shoulder 42 that extends outwardly beyond the skin facing surface 32. The shoulder 42 may extend beyond one or more of the curved lateral end walls 38 and 40 by a distance "d1" of about 0.5mm to about 2mm. The shoulder 42 may not extend completely around the the platform 28. Accordingly, there may be a step at the curved end walls 38 and 40. The shoulder 42 may comprise two shoulders 42. For example, the shoulder 42 at one of the curved end walls 38 may be spaced apart from the shoulder at the other curved end wall 40. The location of the shoulder 42 at the the curved walls 38 and 40 may help minimize the overall size of the cartridge interconnector 22 that must fit into the opening 26 of the shaving razor cartridge 12 (FIG. 2), thus minimizing the size of the shaving razor cartridge 12. By not extending the shoulder 42 completely around the platform 28, the area of the skin facing surface 32 can be maximized thus improving consumer benefits such as heat and moisturization or lubrication delivery to the skin. A height "h1" of the distal end 30 from the shoulder 42 of the platform 28 to the skin facing surface 32 is about 0.5mm to about 3mm. The height "h1" may be sufficient to allow the distal end 30 to extend through the cartridge 12 of FIG. 2. The shoulder 42 may help retain the cartridge interconnector 22 within the opening 26 of the housing 24 and provide sufficient support for distal end 30, especially when using razor cartridges that have trimmers mounted on the side or back of the cartridge In certain embodiments, the distal end may extend through the opening 26 (FIG. 2) and the platform 28 may be positioned and/or secured within the opening 26.
    [0015] Referring to FIGS. 3A and 3B, a ledge 44 may be located on the upper surface 46 of the platform 28. FIG. 3B is a cross sectional view of the handle 14 with the cartridge interconnector 22, taken generally along the line 3B-3B of FIG. 3A. The ledge 44 may be a recessed surface on the upper surface 46. A distance "d2" from the shoulder 42 of the platform 28 to the ledge 44 may be about 3 mm to about 6 mm. A length "L2" of the ledge 44 may be about 4 mm to about 25 mm and preferably about 18 mm. A depth "d3" of the ledge 44 may be about 1 mm to about 3 mm and preferably about 1.75 mm. In certain embodiments, ledge 44 may be tapered relative to the skin facing surface 32 of the distal end 30 at an angle α1 of about 5 degrees to about 20 degrees, and preferably about 8 degrees to about 12 degrees. The angle α1 may help retain the cartridge interconnector 22 on the shaving razor cartridge 12 of FIG. 2. If the angle α1 is too great, the shaving razor cartridge 12 (FIG. 2) may be difficult to remove from the cartridge interconnector 22. However, if the angle α1 is too small, the shaving razor cartridge 12 (FIG. 2) may fall off the cartridge interconnector 22 during use.
    [0016] The combination of dimensions between the ledge 44 and the shoulder 42 may influence the performance of the attachment of the cartridge interconnector 22 to the shaving razor cartridge 12 (FIG. 2). The distance "d2" from the shoulder to the ledge 44, the depth "d3" of the ledge, and the angle α1 of the ledge 44 may be used to control attachment and detachment forces. The height "h1" from the shoulder 42 to the skin facing surface 32 may be used to control shaving geometry and influence the performance of handles that deliver a benefit to the skin through the skin facing surface 32, for example, delivery of moisture, lubrication or heat.
    [0017] Referring to FIG. 4A, a partial side view of the shaving razor handle 14 is shown. The platform 28 may have an upper surface 46 and an opposing lower surface 48 that define an included angle "A1" of about 35 degrees to about 60 degrees, and more preferably about 45 to about 55 degrees. The included angle "A1" may provide for a tapered interlock between the cartridge connection member 22 and the shaving razor cartridge 12 (FIG. 2). The lower surface 48 of the platform 28 and a side wall 50 of the distal end 30 may define an excluded angle "A2" of about 125 degrees to about 155 degrees. The side wall 50 may be generally transverse to the skin facing surface 32 and can help increase the retention forces applied to the shaving razor cartridge 12 (FIG. 2) during shaving, especially during use of a trimmer 55 mounted on the side or back of the shaving razor cartridge 12 (FIG. 2). The angle "A2 may facilitate a user to intuitively guide the cartridge interconnector 22 into the opening 26 razor cartridge 12 (FIG. 2) to attached the shaving razor 12 to the handle 10 (FIG. 2).
    [0018] Refering to FIGS. 4B and 4C, partial side views of the shaving razor handle 14 are illustrated. As shown in FIG. 4B, the platform 28 may have an upper pivot stop surface 52 and a lower pivot stop surface 54 that define an included angle "A3" of about 38 degrees to about 57 degrees. The shaving razor handle 14 may include an arm 56 that contacts the upper pivot stop surface 52 and the lower pivot stop surface 54 as the cartridge interconnect member 22 pivots through the range of motion of about 38 degrees to about 57 degrees. In certain embodiments, the arm 56 may be biased against the lower pivot stop surface 54 in a neutral rest position. The upper pivot stop surface 52 may intersect the skin facing surface 32 at an included angle "A4" of about 50 degrees to about 120 degrees and preferably about 80 degrees. The angle "A4" may be sufficient to enable the skin facing surface contacts the skin's surface during a shaving stroke, even at an upper pivot limit of the cartridge interconnect member 22. Similarly, the lower pivot stop surface 54 may intersect the skin facing surface 32 at an included angle "A5" of about 10 degrees to about 70 degrees and preferably about 37 degrees, as shown in FIG. 4C. The platform 28 may define a "V" shaped notch 58 having the lower pivot stop surface 54 and the upper pivot stop surface 52. The notch 58 may provide for a more robust pivot stop than tab members, which may be more likely to break. The skin facing surface 32 may intersect the lower surface 48 of the platform 28 at an included "A6" of about 5 degrees to about 60 degrees and preferably about 43 degrees. The angle "A6" may facilitate a user to intuitively guide the cartridge interconnector 22 into the opening 26 razor cartridge 12 (FIG. 2) to attached the shaving razor 12 to the handle 10 (FIG. 2).
    [0019] Referring to FIG. 5, a front view of the cartridge interconnector 22 is shown. The platform 28 may be tapered in more than one direction. The platform 28 may be tapered in a first direction, as shown by angle A1 of FIG. 4A. The platform 28 may also be tapered in a second direction. For example the platform 28 may have a pair of side walls 60 and 62 that tapered. In certain embodiments, the side walls 60 and 62 may define an angle A7 of about 10 degrees to about 40 degrees, preferably about 15 degrees to about 30 degrees. The taper of the platform 28 in two directions may improve retention of the cartridge interconnector 22 within the opening 26 of the shaving razor cartridge 12 of FIG. 2 may provide a tapered interlock.
    [0020] Preferred embodiments are derivable from the following paragraphs:(A) shaving razor handle (14) comprising: an elongated gripping portion (16) having a first end (18); and a cartridge interconnector (22) at a second end (20) of the elongated gripping portion that comprises a platform (28) having an upper surface (46) and an opposing lower surface (48) that defines an included angle (A1) of 35 degrees to 60 degrees, wherein a distal end (30) of the cartridge interconnector extends from the platform, the distal end having a skin facing surface (32) with a pair of side walls (34, 36) connected by a pair of curved lateral end walls (38, 40). (B) The shaving razor handle (14) of paragraph (A) wherein the platform (28) defines a "V" shaped notch (58). (C) The shaving razor handle (14) according to any one of the preceding paragraphs wherein the platform (28) has a shoulder (42) that extends beyond the pair of curved lateral end walls (38, 40). (D) The shaving razor handle (14) of paragraph (C) wherein a distance from the shoulder (42) of the platform (28) to a ledge (44) on the upper surface (46) of the platform is 3mm to 6mm. (E) The shaving razor handle (14) of paragraph (D) wherein the shoulder (42) extends outwardly 0.5mm to 2 mm from each of the curved lateral end walls (38, 40). (F) The shaving razor handle (14) of paragraph (D) wherein an angle (α1) of the ledge (44) relative the skin facing surface (32) is 5 degrees to 20 degrees. (G) The shaving razor handle (14) of paragraph (D) wherein a depth (d3) of the ledge (44) is 1mm to 3mm. (H) The shaving razor handle (14) of paragraph (D) wherein a width of the ledge (44) is 5mm to 25mm. (I) The shaving razor handle (14) according to any one of the preceding paragraphs wherein the skin facing surface (32) comprises a skin contacting surface. (J) The shaving razor handle (14) according to any one of the preceding paragraphs wherein the skin facing surface (32) has a length between the pair of curved lateral end walls (38, 40) of 27mm to 35mm. (K) The shaving razor handle (14) according to any one of the preceding paragraphs wherein the skin facing surface (32) has a width (w1) between the side walls (34, 36) of 2.5mm to 4mm. (L) The shaving razor handle (14) according to any one of the preceding paragraphs wherein the lower surface (48) of the platform (28) and a side wall (50) of the distal end (30) define an excluded angle (A2) of 125 degrees to 155 degrees. (M) The shaving razor handle (14) according to any one of the preceding paragraphs wherein the cartridge interconnector (22) pivots relative to the elongated gripping portion (16). (N) The shaving razor handle (14) according to any one of the preceding paragraphs wherein the cartridge interconnector (22) is configured to fit within an opening (26) of a shaving razor cartridge (12). (O) The shaving razor handle (14) according to any one of the preceding paragraphs wherein a height (h1) of the distal end (30) from a shoulder (42) of the platform (28) to the skin contacting surface (32) is 0.5mm to 3mm.
    [0021] The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm."
    权利要求:
    Claims (14)
    [0001] A shaving razor handle (14) comprising:
    an elongated gripping portion (16) having a first end (18); and
    a cartridge interconnector (22) at a second end (20) of the elongated gripping portion that comprises a platform (28) having an upper surface (46) and an opposing lower surface (48) that defines an included angle (A1) of 35 degrees to 60 degrees, wherein a distal end (30) of the cartridge interconnector extends from the platform, the distal end having a skin facing surface (32) with a pair of side walls (34, 36) connected by a pair of curved lateral end walls (38, 40), characterized in that the cartridge interconnector (22) pivots relative to the elongated gripping portion (16).
    [0002] The shaving razor handle (14) of claim 1 wherein the platform (28) defines a "V" shaped notch (58).
    [0003] The shaving razor handle (14) according to any one of the preceding claims wherein the platform (28) has a shoulder (42) that extends beyond the pair of curved lateral end walls (38, 40).
    [0004] The shaving razor handle (14) of claim 3 wherein a distance from the shoulder (42) of the platform (28) to a ledge (44) on the upper surface (46) of the platform is 3mm to 6mm.
    [0005] The shaving razor handle (14) of claim 4 wherein the shoulder (42) extends outwardly 0.5mm to 2 mm from each of the curved lateral end walls (38, 40).
    [0006] The shaving razor handle (14) of claim 4 wherein an angle (α1) of the ledge (44) relative the skin facing surface (32) is 5 degrees to 20 degrees.
    [0007] The shaving razor handle (14) of claim 4 wherein a depth (d3) of the ledge (44) is 1mm to 3mm.
    [0008] The shaving razor handle (14) of claim 4 wherein a width of the ledge (44) is 5mm to 25mm.
    [0009] The shaving razor handle (14) according to any one of the preceding claims wherein the skin facing surface (32) comprises a skin contacting surface.
    [0010] The shaving razor handle (14) according to any one of the preceding claims wherein the skin facing surface (32) has a length between the pair of curved lateral end walls (38, 40) of 27mm to 35mm.
    [0011] The shaving razor handle (14) according to any one of the preceding claims wherein the skin facing surface (32) has a width (w1) between the side walls (34, 36) of 2.5mm to 4mm.
    [0012] The shaving razor handle (14) according to any one of the preceding claims wherein the lower surface (48) of the platform (28) and a side wall (50) of the distal end (30) define an excluded angle (A2) of 125 degrees to 155 degrees.
    [0013] The shaving razor handle (14) according to any one of the preceding claims wherein the cartridge interconnector (22) is configured to fit within an opening (26) of a shaving razor cartridge (12).
    [0014] The shaving razor handle (14) according to any one of the preceding claims wherein a height (h1) of the distal end (30) from a shoulder (42) of the platform (28) to the skin contacting surface (32) is 0.5mm to 3mm.
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    同族专利:
    公开号 | 公开日
    US20190299446A1|2019-10-03|
    EP3549730A1|2019-10-09|
    US10773403B2|2020-09-15|
    EP3549730B1|2021-01-27|
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