CA2447158C - Shaving razor handle - Google Patents
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- CA2447158C CA2447158C CA002447158A CA2447158A CA2447158C CA 2447158 C CA2447158 C CA 2447158C CA 002447158 A CA002447158 A CA 002447158A CA 2447158 A CA2447158 A CA 2447158A CA 2447158 C CA2447158 C CA 2447158C
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- gripping
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Abstract
A shaving razor handle includes an elongated hand gripping structure and a cartridge support structure at an end of the hand gripping structure. The hand gripping structure includes a frame structure pith openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder. Each opening has a restricted area leading to a larger area regions within the frame structure. Each gripping pad has a locking tab received in an opening and each locking tab has a portion that is located in the larger area region and is larger than the restricted area.
Description
SIl-IAVIN~ IBAZ(~~t I-IIA,N1~LL
The invention relates to shaving razors having handles and replaceable cartridges as well as to the razor handles themselves. This application is a division of copending commonly owned Canadian Patent Application Serial No. 2,279,187 of February 18, 198.
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. In some shaving systems the blades are resiliently mounted with respect to the cartridge housing and deflect under the force of skin contact during shaving. In some shaving systems the connection of the cartridge to the handle provides a pivotal mounting of the cartridge with respect to the handle so that the cartridge angle adjusts to follow the contours of the surface being shaved. In such systems, the cartridge can be biased toward an at rest position by the action of a spring-biased plunger (a cam follower) carried on the handle against a cam surface on the cartridge housing.
In one aspect of the invention according to the parent application there is provided a cartridge-t 5 connecting subassembly for a shaving razor handle comprising a cartridge connecting structure having outer, cartridge-supporting side surfaces that mate with inwardly directed cartridge surfaces of a recess on a replaceable cartridge, the cartridge connecting structure including cartridge holding Structure for releasably holding a replaceable cartridge, a movable component within the cartridge connecting structure for interacting with the cartridge when connected to the cartridge connecting structure, and a handle connecting structure having outer, handle-supporting side surfaces that mate with inwardly directed handle surfaces on an elongated hand gripping structure of the razor handle, the cartridge connecting structure and the handle connecting structure having contiguous portions, whereby the subassembly is substantially covered when the handle connecting structure is connected to the elongated hand gripping structure, and the cartridge connecting structure is connected to the cartridge.
In another aspect of the invention according to the parent application there is provided a cartridge-connecting subassembly for a shaving razor handle, comprising a housing and a movable component within the housing for interacting with a replaceable cartridge when connected to the subassembly. The housing includes a handle connecting structure for making a permanent connection to a subassembly connecting end of an elongated hand gripping structure of the razor handle, a cartridge connecting structure for making a releasable connection to the replaceable cartridge, an assembly opening at the handle connecting structure for receiving the movable component during assembly, a cartridge interaction opening at the cartridge connecting structure through which the component is rnovabte for interaction with the cartridge, and blocking
The invention relates to shaving razors having handles and replaceable cartridges as well as to the razor handles themselves. This application is a division of copending commonly owned Canadian Patent Application Serial No. 2,279,187 of February 18, 198.
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. In some shaving systems the blades are resiliently mounted with respect to the cartridge housing and deflect under the force of skin contact during shaving. In some shaving systems the connection of the cartridge to the handle provides a pivotal mounting of the cartridge with respect to the handle so that the cartridge angle adjusts to follow the contours of the surface being shaved. In such systems, the cartridge can be biased toward an at rest position by the action of a spring-biased plunger (a cam follower) carried on the handle against a cam surface on the cartridge housing.
In one aspect of the invention according to the parent application there is provided a cartridge-t 5 connecting subassembly for a shaving razor handle comprising a cartridge connecting structure having outer, cartridge-supporting side surfaces that mate with inwardly directed cartridge surfaces of a recess on a replaceable cartridge, the cartridge connecting structure including cartridge holding Structure for releasably holding a replaceable cartridge, a movable component within the cartridge connecting structure for interacting with the cartridge when connected to the cartridge connecting structure, and a handle connecting structure having outer, handle-supporting side surfaces that mate with inwardly directed handle surfaces on an elongated hand gripping structure of the razor handle, the cartridge connecting structure and the handle connecting structure having contiguous portions, whereby the subassembly is substantially covered when the handle connecting structure is connected to the elongated hand gripping structure, and the cartridge connecting structure is connected to the cartridge.
In another aspect of the invention according to the parent application there is provided a cartridge-connecting subassembly for a shaving razor handle, comprising a housing and a movable component within the housing for interacting with a replaceable cartridge when connected to the subassembly. The housing includes a handle connecting structure for making a permanent connection to a subassembly connecting end of an elongated hand gripping structure of the razor handle, a cartridge connecting structure for making a releasable connection to the replaceable cartridge, an assembly opening at the handle connecting structure for receiving the movable component during assembly, a cartridge interaction opening at the cartridge connecting structure through which the component is rnovabte for interaction with the cartridge, and blocking
-2-structure retaining the movable component in the housing.
In yet another aspect of the invention according to the parent application there is provided a cartridge-connecting subassembly for a shav ing razor handle, comprising a housing having handle connecting structure for making a permanent connection to a subassembly connecting end of an elongated hand gripping structure of the razor handle, the housing having a cartridge connecting structure for making a releasable connection to a replaceable cartridge, an ejector structure that is separate from the cartridge connecting structure and is movably mounted in the housing with respect to the cartridge connecting structure so as to eject the cartridge from the cartridge connecting structure when moved to an ejection position, the ejector structure being U-shaped and having area portions that are extendible from the cartridge connecting structure to eject the cartridge form the cartridge connecting structure, a spring within the housing that biases the ejector structure away from the cartridge, and a plunger that is movably mounted in the cartridge connecting structure between the arm portions of the ejector structure, extends from the cartridge connecting structure for biasing the cartridge and is biased toward the cartridge by the spring.
In another aspect of the invention according to the parent application there is provided a shaving razor handle for connection to a replaceable cartridge, comprising an elongated hand gripping structure having a subassembly connecting end with inwardly directed handle surfaces, and a subassembly that is permanently connected to the elongated had gripping structure. The subassembly comprises a handle connecting structure having outer, handle-supporting side surfaces 9:hat mate with the inwardly directed handle surfaces, a cartridge connecting structure having outer, cartridge-supporting side surfaces that mate with inwardly directed cartridge surfaces of a recess on a replaceable cartridge, the cartridge connecting structure including cartridge holding structure for releasably holding the replaceable cartridge, and a movable component with the cartridge connecting structure for interacting with the cartridge when connected to the cartridge connecting structure, the cartridge connecting structure and the handle connecting structure having contiguous portions, whereby the subassembly is substantially covered when the cartridge is connected to the cartridge connecting structure.
In still another aspect of the invention according to the parent application there is provided a shaving razor handle comprising an elongated hand gripping structure having a generally straight portion and a subassembly connecting portion that is offset with respect to the straight portion and is generally flat, and a subassembly that has a generally flat hanndle connecting structure permanently connected to the subassembly connecting portion, a cartridge connecting structure for making a releasable connection to a replaceable cartridge, and a movable component within the cartridge connecting structure for interacting with the replaceable cartridge when connected to the handle.
In yet another aspect of the invention according to the parent application there is provided a cartridge-connecting subassembly for a shav ing razor handle, comprising a housing having handle connecting structure for making a permanent connection to a subassembly connecting end of an elongated hand gripping structure of the razor handle, the housing having a cartridge connecting structure for making a releasable connection to a replaceable cartridge, an ejector structure that is separate from the cartridge connecting structure and is movably mounted in the housing with respect to the cartridge connecting structure so as to eject the cartridge from the cartridge connecting structure when moved to an ejection position, the ejector structure being U-shaped and having area portions that are extendible from the cartridge connecting structure to eject the cartridge form the cartridge connecting structure, a spring within the housing that biases the ejector structure away from the cartridge, and a plunger that is movably mounted in the cartridge connecting structure between the arm portions of the ejector structure, extends from the cartridge connecting structure for biasing the cartridge and is biased toward the cartridge by the spring.
In another aspect of the invention according to the parent application there is provided a shaving razor handle for connection to a replaceable cartridge, comprising an elongated hand gripping structure having a subassembly connecting end with inwardly directed handle surfaces, and a subassembly that is permanently connected to the elongated had gripping structure. The subassembly comprises a handle connecting structure having outer, handle-supporting side surfaces 9:hat mate with the inwardly directed handle surfaces, a cartridge connecting structure having outer, cartridge-supporting side surfaces that mate with inwardly directed cartridge surfaces of a recess on a replaceable cartridge, the cartridge connecting structure including cartridge holding structure for releasably holding the replaceable cartridge, and a movable component with the cartridge connecting structure for interacting with the cartridge when connected to the cartridge connecting structure, the cartridge connecting structure and the handle connecting structure having contiguous portions, whereby the subassembly is substantially covered when the cartridge is connected to the cartridge connecting structure.
In still another aspect of the invention according to the parent application there is provided a shaving razor handle comprising an elongated hand gripping structure having a generally straight portion and a subassembly connecting portion that is offset with respect to the straight portion and is generally flat, and a subassembly that has a generally flat hanndle connecting structure permanently connected to the subassembly connecting portion, a cartridge connecting structure for making a releasable connection to a replaceable cartridge, and a movable component within the cartridge connecting structure for interacting with the replaceable cartridge when connected to the handle.
-3-The invention of the parent application also relates to a method of manufacturing a razor handle comprising: providing a cartridge-c~r~necting subassembly comprising a cartridge connecting structure having outer, cartridge-supporting side surfaces that mate with inwardly directed cartridge surfaces of a recess on a replaceable cartridge, the cartridge connecting structure including cartridge holding structure for releasably holding the replaceable cartridge, a movable component within the cartridge connecting structure for interacting with the cartridge when connected to the cartridge connecting structure, and a handle connecting structure having outer, handle-supporting, side surfaces, the cartridge connecting structure and the handle connecting structure having contiguous portions; providing an elongated hand gripping structure having inwardly directed handle surfaces thatmate with outer, handle-supporting, side surfaces ofthe handle 1(? connecting structure, and securing the handle connecting structure to the elongated hand gripping structure, the inwardly directed handle surfaces mating with the outer, handle-supporting, side surfaces, whereby the subassembly is substantially covered when the cartridge connecting structure is connected to the cartridge.
Furthermore the invention of the parent application provides a method of manufacturing a shaving razor handle comprising: providing a cartridge-connecting subassembly comprising a housing and a movable t5 component within the housing for interacting with a replaceable cartridge when connected to the subassembly, the housing including a handle connecting structure, a cartridge connecting sstructure for making a releasable connection to the replaceable cartridge, an assembly opening at the handle connecting structure for receiving the movable component during assembly, a cartridge interaction opening at the cartridge connecting structure through which the component is movable for interaction with the cartridge, 20 and blocking structure retaining the movable component on the housing; and securing the subassembly to a subassembly connecting end of an elongated hand gripping structure of the razor handle, the assembly opening being covered by the subassembly connecting end after the securing step.
Additionally, the invention ofthe parent application contemplates a method of assembling a cartridge connecting subassembly for a shaving razor handle, comprising: providing a housing having a handle 25 connecting structure for making a permanent connection to a subassembly connecting end of an elongated hand gripping structure of the razor handle, a cartridge connecting structure for making a releasable connection to a replaceable cartridge, an assembly opening at the handle connecting structure, a cartridge interaction opening, and blocking structure at the cartridge connecting structure; and inserting a movable component into the housing through the assembly opening, the component being movable through the 30 interaction opening for interaction with the cartridge when connected to the subassembly, the blocking structure retaining the movable component in the housing.
The present invention on the other hand may be considered as providing a shaving razor handle comprising: an elongated had gripping structure, and a cartridge support structure at an end of the hand gripping structure, the elongated hand gripping structure including a frame structure with apenings and a plurality of gripping pads that each camprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each opening having a restricted area leading to a larger area region within the frame structure, each gripping pad having a locking tab received in the opening, each locking tab having a portion that is located in the larger area region and is jarger than the restricted area, wherein the gripping pads are crescent shaped with a broad area on an upper surface of the frame structure and two narrowing portions on two side portions, and wherein there is a locking tab at each narrowing portion, and wherein the broad area carries an interlocking portion that interlacks with structure on the frame structure, and wherein the nonelastomeric plastic support Layer has a lower surface that is concave between the locking tabs, wherein the frame structure has respective recessed areas in an outer surface, wherein the gripping pads are located in the recessed areas, and wherein the openings that receive respective locking tabs are located in the recessed areas.
'Fhe present invention may also be considered as providing a shaving razor handle comprising: an elongated had gripping structure, and a cartridge support structure at an end ofthe hand gripping structure, the elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each opening having a restricted area leading to a larger area region within the frame structure, each gripping pad having a locking tab received in the opening, each lacking tab having a portion that is located in the larger area region and is larger than the restricted area, wherein the one gripping pad has two locking tabs and has an interlocking partion between the locking tabs for interlocking with structure on the frame structure.
Additionally, the present invention may be considered to provide a shaving razor handle comprising:
an elongated had gripping structure, and a cartridge support structure at an end of the hand gripping structure, the elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each opening having a restricted area leading to a larger area region within the frame structure, the nonelastomeric plastic support layer of each gripping pad having a locking tab received in the opening, each locking tab having a portion that is located in the larger area region anal is larger than the restricted area.
Other advantages and features of the invention will Ise apparent from the detailed description of preferred. embodiments thereof and from the claims.
Fig. 1 is a perspective view of a shaving razor according to the invention.
Fig. 2 is a perspective view showing a handle and a replaceable cartridge ofthe Fig. l razor separated from each other.
fig. 3 is an exploded vicw of the components of the Fig. 2 handle.
Figs. 4A and 4B are vertical sectional views of upper gripping pads of the Fig. 2 handle.
Fig. 5 is a plan view of a frame of the Fig. 2 handle.
Fig. 6 is an elevation of the Fig. S frame.
Fig. 7 is a vertical sectional view, taken at 7-7 of Fg. 5, of the Fig. 5 frame.
Fig. 8 is a partial sectional view, taken at 8-8 of Fig. 6, showing the connection of locking tabs of the Figs. 4A and 4B gripping pads to the Fig. 5 frame.
Fig. 9 is an exploded view showing a cartridge connecting subassembly and button at a cartridge connecting end of the Fig. 5 frame of the Fig. 2 handle.
Fig. I O is a vertical sectional view of a base member of the Fig. 2 cartridge.
Fig. 11 is a plan view of an ejector of the Fig. 9 subassembly.
Fig. 12 is a horizontal section of a housing of the Fig. 9 subassembly.
Fig. 13 is a vertical sectional view, taken at 13-I 3 of Fig. 12, of a housing of the Fig. 9 subassembly.
Fig. 14 is an elevation of a plunger of the Fig. 9 subassembly.
Fig. 15 is a plan view of the Fig. I4 plunger.
Fig. 16 is an elevation of the button of the Fig. 2 handle.
Fig. 17 is a vertical sectional view, taken. at I7-17 of Fig. I3, of the housing of the Fig. 9 subassembly.
Referring to Figs. I and 2, shaving razor 10 includes handle 12 and replaceable shaving cartridge 14. As shown in Fig. 2, cartridge 14 is removable from handle i2. Cartridge 14 includes housing 16, which carries three blades I 8, guard 20 and cap 22. Cartridge 14 also includes interconnect member 24 on which housing I6 is pivotally mounted. lnterconncct member l 4 includes base 27, which removably and fixedly attaches to cartridge connecting structure 26 of handle 12, and two arms 28 that pivotally support housing 16 at its two sides. Housing 16 has cam surface 25 (Fig. 2j which is acted upon by spring-biased plunger 23 of handle 12; when base 27 is connected to handle 12, plunger 23 passes through opening 29 in base 27 to bias housing 16 to the forward, at rest position shown in Fig. 1. The construction and operation of shaving cartridge I4 is discussed in detail in commonly owned U.~. Patent No.
5,787,586. Handle 12 carries button 32 used to eject a cartridge 14 by activating U-shaped ejector 86 (Fig. 9), causing it to extend from the front of cartridge connecting structure 26 and push base 27 from structure 26.
Referring to Figs. 3-7, handle 12 includes elongated hand gripping structure30 to which cartridge connecting subassembly 31 (described in more detail below) and button 32 a~°e connected. Elongated hand gripping structure 30 includes metal frame 34 as a primary structural member.
Cartridge connecting subassembly 31 (Fig. 3) is connected to subassembly connecting end 36 of frame 34. End 36 is generally flat, in order to match the shape of base 27 (Figs. 1 and 2), and is offset from. the rest of frame 34, which is generally straight. The straight portion of frame 34 has three crescea~t-shaped recesses 38, 40, 42 (see in particular Figs. 5-6) and associated holes 39, 41, 43 for upper, crescent-shaped gripping pads 44, 46, 48. It also includes oval shaped recess 50 for upper logo panel 52 (Fig. 3) and lower recess 54 (Fig. 7) for lower gripping pad 56, which carries lower logo pad 57 (Fig. 3).
I O Upper gripping pads 44, 46, 48 and lower gripping pad 56 provide a hand-gripping structure in the completed unit and are each made of an eiastomeric plastic outer gripping layer (e.g., thermoplastic elastomer) and a nonelastomeric plastic support layer (e.g., of polypropylene or acrylonitrile butadiene styrene) thereunder made by two-color molding. The two-layer construction of front gripping pad 44 and rear gripping pad 48 (middle gripping pad 46 is similar to pad 48) is shown in Figs. 4A and 4B, where elastomeric gripping layers 45 and nonelastomeric support layers 47 are shown in the sectional portions.
The nonelastomeric plastic support layer 47 of front gripping pad 44 has rearwardly-directed tab 62 (Fig. 4A) at the front that passes through hole 39 and mates with recess 63 on front extension 60 of lower gripping pad 56 (Fig. 3). Tab 62 is optional, and pad 44 can be securely connected to frame 34 without this feature at the front. The nonelastomeric plastic support layers 47 of middle and rear gripping pads 46, 48 have forwardly-directed tabs 64 (Fig. 4B) at the front tha9: pass through holes 41, 43 and lock under overlying portions 68 of frame 34 (Fig. 7). All upper gripping pads 44, 46, 48 have facing locking tabs 70 that are received in openings 72, 74, 76 of frame 34 (Figs. 6, 7) at the ends of crescent-shaped recesses 38, 40, 42.
Referring to Fig. 8, frame 34 has opposed barbs 70a at openings 72, 74, 76, and locking tabs 70 deform as they are inserted past barbs 70a into the openings. After insertion, the portions of locking tabs 70 inside of frame 34 (in a region within frame 34 that is larger than the indi idual openings) return to a size that is larger than the restricted area between barbs 70a. Barbs 70a inhibit locking tabs 70 from coming out of openings 72, 74, 76 and thus lock tabs 70 and gripping pads 44, 46, 48 in position an frame 34.
Upper iogo panel 52 has extensions 58 (Fig. 3) that are press-fitted into recesses 61 in frame 34 (Figs. 5, 7). The nonelastomeric plastic support layer of lower gripping pad 56 has extensions 60 (Fig. 3) that are press-fitted into recesses 69 in frame 34 (Figs. 5, 7) and extensions 71 that are press-fitted between opposed mating surfaces inside of frame 34. Lower logo panel 57 has extensions 73 that are secured in mating recesses (not shown) in lower ripping pad 56 by staking by pins 73a.
Referring to Fig. 9, the components of cartridge connecting subassembly 31 are shown prior to assembly and prior to mounting of subassembly 31 in recess 80 in subassembly connecting end 36 of frame 34. Subassembly 31 includes housing 82, plunger 23, spring 84, and U-shaped ejector 86. Plunger 23, spring 84, and U-shaped ejector 86 are received in recess 87 (Figs. 12, 13) in housing 82. Housing 82 includes cartridge connecting structure 26 at the front and handle connecting structure 88 at the rear, as 9. indicated in Figs. 9 and 12. Handle connecting structure 88 has outer, handle-supporting, surfaces 90 that mate with inwardly directed handle surfaces 92 (Figs. 7, 9) of frame 34 when mounted in recess 80. Handle connecting structure 88 also has side protrusions 89 for mating with mating recesses 91 of frame 34. Cartridge connecting structure 26 extends from frame 34 when structure 88 is mounted in recess 80 (Fig. 2), and has outer, cartridge-supporting, side surfaces 94 (Fig. 9) that mate with inwardly directed cartridge surfaces 96 ofrecess 98 ofbase 27 (Fig. I0). Cartridge connecting structure 26 also includes two depressions 100 (one shown in Fig. 13) that act as cartridge holding structure for releasably holding base 27 via engagement of detents 102 (one shown in Fig. 10) thereon.
Referring to Figs. 9, 11-I5, housing 82 has assembly opening I04 (Figs. 12, 13) at the rear for receiving the movable components, namely plunger 23, spring 84, and ejector 86, during assembly. At the front ofhousing 82 are side openings I 06 and central opening 108 through which arm portions 110 of ejector 86 and plunger 23 are respectively movable for interaction with carta-idge 14.
Ribs 112 (Fig. 12) between openings 106,108 act as blocking structure retaining ejector 86 and plunger 23 on housing 82. Arm portions I 10 on each side of plunger 23 are extendible from cartridge connecting structure 26 to eject cartridge 14 from cartridge connecring structure 26.
Referring to Figs. 9, 1 l and 13, handle connecting structure 88 has opening I
I4 providing access of bottom extensions 1 I6 of button 32 (Fig. 16) that are received within rectangular region 118 at the back narrow portion of ejector 86 (Fig. I 1 ). Raised lip I 20 extends above surface 90 along opening 114. Lip I 20 and opening 114 are aligned with and tit within recess 122 of subassembly connecting end 36 of handle 12.
2~ Referring to Figs. 11, 12,14,15, when ejector 86 is mounted in recess 87, angled stop surfaces 124 at arms 110 are biased against and blocked by angled stop surfaces 126 on the inside of recess 87. Ends I I 0 can be moved forward to extend slightly through openings 106 when the back of ejector 86 is pushed forward by button 32. Plunger 23 is located between arms 110, and front blade 128 extends through opening 108 in front of cartridge connecting structure 26. 131ade 128 is thicker than the arms of ejector 86 and slides within track 129, while arms 110 slide in the narrower space between surfaces I30.
Side projections 132 of plunger 23 (Figs. I4, 15) are blocked. by ribs I 12 and prevented from further forward movement, and bottom projection 134 rides within groove 136 (Fig. 12) to guide plunger 23. Spring 84 is located on shaft I40 and pushes against spring rest I 4I at the base of ejector 86. Spring 84 thus performs the dual functions of biasing ejector 86 rearward with surfaces 124 of ejector 86 resting against surfaces I26 of housing 82 and of biasing plunger 23 forward with side projections I32 of plunger 23 resting against ribs l l 2 of housing 82.
IW ring assembly of cartridge connecting subassembly 31, spring 84 is placed on shaft I 40 of plunger 23, and these two components are inserted into recess 87 ofhousing 82 along track L29. U-shaped ejector 86 is then inserted, with arms I IO straddling plunger 23 in the space between surfaces 130. Front outer comers 142 of arms 110 are deflected inward by cam surfaces 144 of housing 82 during insertion of ejector 86. As angled stop surfaces 124 of arms 110 pass angled stop surfaces I26 of housing 82, arms I 10 spring outward, and ejector 86 is retained within housing 82 by blocking of angled stop surfaces L24 by angled stop surfaces 126. All of the movable components of subassembly 3l are thus Iocked within housing 82 and prevented from falling out during part handling in preparation of assembly on frame 34.
partridge connecting subassembly 31 is mounted on frame 34 by inserting handle connecting structure 88 into recess 80 and staking housing 82 to frame 34 using pins 150.
Pins 150 pass through holes 152 in frame 34 and aligned holes 154 in the upper surface 90 of handle connecting structure 88 outside of lip 120. The pins are driven into the plastic of housing 82 at lower surfaces 130 outside of the region occupied by narrow portion of IJ-shaped ejector 86.
Button 32 is then inserted into opening I 14. Referring to Figs. 16 and I7, each extension 116 of ejector button 32 has an outwardly directed groove 160 that slides on a respective track 162 within opening 114. The upper surfaces 16I defining grooves 160 slide on the upper surfaces L64 of tracks I62, and the lower surfaces I66 defining groves 160 effect capture on or abut the lower surfaces I68 of tracks I62.
Extensions I t 6 have inclined surfaces 170 that coact with the curved upper corners of tracks I 62 to deflect extensions 116 inward as button 32 is inserted into opening 114. ~JVhen grooves 160 on extensions I 16 align with tracks 162, extensions I I6 substantially return to their undeflected position and lock ejector button 32 in place within opening I 14. The ends of extensions 1 I6 are located within rectangular region I I 8 and push against surfaces I72 of ejector 86 when ejector button 32 is pushed toward the end of handle 12. After button 32 has been inserted, upper vertical surfaces 174 of extensions I 16 sit within the space between upper surfaces 176 of opening 114. Bar I 78 serves to capture and guide spring 84.
Button 32 covers openings 154 so that the staking is not visible in the assembled product. Also, after a cartridge 14 has been attached, no part of subassembly 31 is visible (see Fig. 1), and thus the different materials used for housing 82 and frame 34 are not evident.
_g_ Other embodiments of the invention are within the scope of the appended claims,. In place of a trapezoidal extension shape for cartridge connecting structure 26, a six-sided structure, or other asymmetrical shape could be employed.
Furthermore the invention of the parent application provides a method of manufacturing a shaving razor handle comprising: providing a cartridge-connecting subassembly comprising a housing and a movable t5 component within the housing for interacting with a replaceable cartridge when connected to the subassembly, the housing including a handle connecting structure, a cartridge connecting sstructure for making a releasable connection to the replaceable cartridge, an assembly opening at the handle connecting structure for receiving the movable component during assembly, a cartridge interaction opening at the cartridge connecting structure through which the component is movable for interaction with the cartridge, 20 and blocking structure retaining the movable component on the housing; and securing the subassembly to a subassembly connecting end of an elongated hand gripping structure of the razor handle, the assembly opening being covered by the subassembly connecting end after the securing step.
Additionally, the invention ofthe parent application contemplates a method of assembling a cartridge connecting subassembly for a shaving razor handle, comprising: providing a housing having a handle 25 connecting structure for making a permanent connection to a subassembly connecting end of an elongated hand gripping structure of the razor handle, a cartridge connecting structure for making a releasable connection to a replaceable cartridge, an assembly opening at the handle connecting structure, a cartridge interaction opening, and blocking structure at the cartridge connecting structure; and inserting a movable component into the housing through the assembly opening, the component being movable through the 30 interaction opening for interaction with the cartridge when connected to the subassembly, the blocking structure retaining the movable component in the housing.
The present invention on the other hand may be considered as providing a shaving razor handle comprising: an elongated had gripping structure, and a cartridge support structure at an end of the hand gripping structure, the elongated hand gripping structure including a frame structure with apenings and a plurality of gripping pads that each camprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each opening having a restricted area leading to a larger area region within the frame structure, each gripping pad having a locking tab received in the opening, each locking tab having a portion that is located in the larger area region and is jarger than the restricted area, wherein the gripping pads are crescent shaped with a broad area on an upper surface of the frame structure and two narrowing portions on two side portions, and wherein there is a locking tab at each narrowing portion, and wherein the broad area carries an interlocking portion that interlacks with structure on the frame structure, and wherein the nonelastomeric plastic support Layer has a lower surface that is concave between the locking tabs, wherein the frame structure has respective recessed areas in an outer surface, wherein the gripping pads are located in the recessed areas, and wherein the openings that receive respective locking tabs are located in the recessed areas.
'Fhe present invention may also be considered as providing a shaving razor handle comprising: an elongated had gripping structure, and a cartridge support structure at an end ofthe hand gripping structure, the elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each opening having a restricted area leading to a larger area region within the frame structure, each gripping pad having a locking tab received in the opening, each lacking tab having a portion that is located in the larger area region and is larger than the restricted area, wherein the one gripping pad has two locking tabs and has an interlocking partion between the locking tabs for interlocking with structure on the frame structure.
Additionally, the present invention may be considered to provide a shaving razor handle comprising:
an elongated had gripping structure, and a cartridge support structure at an end of the hand gripping structure, the elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each opening having a restricted area leading to a larger area region within the frame structure, the nonelastomeric plastic support layer of each gripping pad having a locking tab received in the opening, each locking tab having a portion that is located in the larger area region anal is larger than the restricted area.
Other advantages and features of the invention will Ise apparent from the detailed description of preferred. embodiments thereof and from the claims.
Fig. 1 is a perspective view of a shaving razor according to the invention.
Fig. 2 is a perspective view showing a handle and a replaceable cartridge ofthe Fig. l razor separated from each other.
fig. 3 is an exploded vicw of the components of the Fig. 2 handle.
Figs. 4A and 4B are vertical sectional views of upper gripping pads of the Fig. 2 handle.
Fig. 5 is a plan view of a frame of the Fig. 2 handle.
Fig. 6 is an elevation of the Fig. S frame.
Fig. 7 is a vertical sectional view, taken at 7-7 of Fg. 5, of the Fig. 5 frame.
Fig. 8 is a partial sectional view, taken at 8-8 of Fig. 6, showing the connection of locking tabs of the Figs. 4A and 4B gripping pads to the Fig. 5 frame.
Fig. 9 is an exploded view showing a cartridge connecting subassembly and button at a cartridge connecting end of the Fig. 5 frame of the Fig. 2 handle.
Fig. I O is a vertical sectional view of a base member of the Fig. 2 cartridge.
Fig. 11 is a plan view of an ejector of the Fig. 9 subassembly.
Fig. 12 is a horizontal section of a housing of the Fig. 9 subassembly.
Fig. 13 is a vertical sectional view, taken at 13-I 3 of Fig. 12, of a housing of the Fig. 9 subassembly.
Fig. 14 is an elevation of a plunger of the Fig. 9 subassembly.
Fig. 15 is a plan view of the Fig. I4 plunger.
Fig. 16 is an elevation of the button of the Fig. 2 handle.
Fig. 17 is a vertical sectional view, taken. at I7-17 of Fig. I3, of the housing of the Fig. 9 subassembly.
Referring to Figs. I and 2, shaving razor 10 includes handle 12 and replaceable shaving cartridge 14. As shown in Fig. 2, cartridge 14 is removable from handle i2. Cartridge 14 includes housing 16, which carries three blades I 8, guard 20 and cap 22. Cartridge 14 also includes interconnect member 24 on which housing I6 is pivotally mounted. lnterconncct member l 4 includes base 27, which removably and fixedly attaches to cartridge connecting structure 26 of handle 12, and two arms 28 that pivotally support housing 16 at its two sides. Housing 16 has cam surface 25 (Fig. 2j which is acted upon by spring-biased plunger 23 of handle 12; when base 27 is connected to handle 12, plunger 23 passes through opening 29 in base 27 to bias housing 16 to the forward, at rest position shown in Fig. 1. The construction and operation of shaving cartridge I4 is discussed in detail in commonly owned U.~. Patent No.
5,787,586. Handle 12 carries button 32 used to eject a cartridge 14 by activating U-shaped ejector 86 (Fig. 9), causing it to extend from the front of cartridge connecting structure 26 and push base 27 from structure 26.
Referring to Figs. 3-7, handle 12 includes elongated hand gripping structure30 to which cartridge connecting subassembly 31 (described in more detail below) and button 32 a~°e connected. Elongated hand gripping structure 30 includes metal frame 34 as a primary structural member.
Cartridge connecting subassembly 31 (Fig. 3) is connected to subassembly connecting end 36 of frame 34. End 36 is generally flat, in order to match the shape of base 27 (Figs. 1 and 2), and is offset from. the rest of frame 34, which is generally straight. The straight portion of frame 34 has three crescea~t-shaped recesses 38, 40, 42 (see in particular Figs. 5-6) and associated holes 39, 41, 43 for upper, crescent-shaped gripping pads 44, 46, 48. It also includes oval shaped recess 50 for upper logo panel 52 (Fig. 3) and lower recess 54 (Fig. 7) for lower gripping pad 56, which carries lower logo pad 57 (Fig. 3).
I O Upper gripping pads 44, 46, 48 and lower gripping pad 56 provide a hand-gripping structure in the completed unit and are each made of an eiastomeric plastic outer gripping layer (e.g., thermoplastic elastomer) and a nonelastomeric plastic support layer (e.g., of polypropylene or acrylonitrile butadiene styrene) thereunder made by two-color molding. The two-layer construction of front gripping pad 44 and rear gripping pad 48 (middle gripping pad 46 is similar to pad 48) is shown in Figs. 4A and 4B, where elastomeric gripping layers 45 and nonelastomeric support layers 47 are shown in the sectional portions.
The nonelastomeric plastic support layer 47 of front gripping pad 44 has rearwardly-directed tab 62 (Fig. 4A) at the front that passes through hole 39 and mates with recess 63 on front extension 60 of lower gripping pad 56 (Fig. 3). Tab 62 is optional, and pad 44 can be securely connected to frame 34 without this feature at the front. The nonelastomeric plastic support layers 47 of middle and rear gripping pads 46, 48 have forwardly-directed tabs 64 (Fig. 4B) at the front tha9: pass through holes 41, 43 and lock under overlying portions 68 of frame 34 (Fig. 7). All upper gripping pads 44, 46, 48 have facing locking tabs 70 that are received in openings 72, 74, 76 of frame 34 (Figs. 6, 7) at the ends of crescent-shaped recesses 38, 40, 42.
Referring to Fig. 8, frame 34 has opposed barbs 70a at openings 72, 74, 76, and locking tabs 70 deform as they are inserted past barbs 70a into the openings. After insertion, the portions of locking tabs 70 inside of frame 34 (in a region within frame 34 that is larger than the indi idual openings) return to a size that is larger than the restricted area between barbs 70a. Barbs 70a inhibit locking tabs 70 from coming out of openings 72, 74, 76 and thus lock tabs 70 and gripping pads 44, 46, 48 in position an frame 34.
Upper iogo panel 52 has extensions 58 (Fig. 3) that are press-fitted into recesses 61 in frame 34 (Figs. 5, 7). The nonelastomeric plastic support layer of lower gripping pad 56 has extensions 60 (Fig. 3) that are press-fitted into recesses 69 in frame 34 (Figs. 5, 7) and extensions 71 that are press-fitted between opposed mating surfaces inside of frame 34. Lower logo panel 57 has extensions 73 that are secured in mating recesses (not shown) in lower ripping pad 56 by staking by pins 73a.
Referring to Fig. 9, the components of cartridge connecting subassembly 31 are shown prior to assembly and prior to mounting of subassembly 31 in recess 80 in subassembly connecting end 36 of frame 34. Subassembly 31 includes housing 82, plunger 23, spring 84, and U-shaped ejector 86. Plunger 23, spring 84, and U-shaped ejector 86 are received in recess 87 (Figs. 12, 13) in housing 82. Housing 82 includes cartridge connecting structure 26 at the front and handle connecting structure 88 at the rear, as 9. indicated in Figs. 9 and 12. Handle connecting structure 88 has outer, handle-supporting, surfaces 90 that mate with inwardly directed handle surfaces 92 (Figs. 7, 9) of frame 34 when mounted in recess 80. Handle connecting structure 88 also has side protrusions 89 for mating with mating recesses 91 of frame 34. Cartridge connecting structure 26 extends from frame 34 when structure 88 is mounted in recess 80 (Fig. 2), and has outer, cartridge-supporting, side surfaces 94 (Fig. 9) that mate with inwardly directed cartridge surfaces 96 ofrecess 98 ofbase 27 (Fig. I0). Cartridge connecting structure 26 also includes two depressions 100 (one shown in Fig. 13) that act as cartridge holding structure for releasably holding base 27 via engagement of detents 102 (one shown in Fig. 10) thereon.
Referring to Figs. 9, 11-I5, housing 82 has assembly opening I04 (Figs. 12, 13) at the rear for receiving the movable components, namely plunger 23, spring 84, and ejector 86, during assembly. At the front ofhousing 82 are side openings I 06 and central opening 108 through which arm portions 110 of ejector 86 and plunger 23 are respectively movable for interaction with carta-idge 14.
Ribs 112 (Fig. 12) between openings 106,108 act as blocking structure retaining ejector 86 and plunger 23 on housing 82. Arm portions I 10 on each side of plunger 23 are extendible from cartridge connecting structure 26 to eject cartridge 14 from cartridge connecring structure 26.
Referring to Figs. 9, 1 l and 13, handle connecting structure 88 has opening I
I4 providing access of bottom extensions 1 I6 of button 32 (Fig. 16) that are received within rectangular region 118 at the back narrow portion of ejector 86 (Fig. I 1 ). Raised lip I 20 extends above surface 90 along opening 114. Lip I 20 and opening 114 are aligned with and tit within recess 122 of subassembly connecting end 36 of handle 12.
2~ Referring to Figs. 11, 12,14,15, when ejector 86 is mounted in recess 87, angled stop surfaces 124 at arms 110 are biased against and blocked by angled stop surfaces 126 on the inside of recess 87. Ends I I 0 can be moved forward to extend slightly through openings 106 when the back of ejector 86 is pushed forward by button 32. Plunger 23 is located between arms 110, and front blade 128 extends through opening 108 in front of cartridge connecting structure 26. 131ade 128 is thicker than the arms of ejector 86 and slides within track 129, while arms 110 slide in the narrower space between surfaces I30.
Side projections 132 of plunger 23 (Figs. I4, 15) are blocked. by ribs I 12 and prevented from further forward movement, and bottom projection 134 rides within groove 136 (Fig. 12) to guide plunger 23. Spring 84 is located on shaft I40 and pushes against spring rest I 4I at the base of ejector 86. Spring 84 thus performs the dual functions of biasing ejector 86 rearward with surfaces 124 of ejector 86 resting against surfaces I26 of housing 82 and of biasing plunger 23 forward with side projections I32 of plunger 23 resting against ribs l l 2 of housing 82.
IW ring assembly of cartridge connecting subassembly 31, spring 84 is placed on shaft I 40 of plunger 23, and these two components are inserted into recess 87 ofhousing 82 along track L29. U-shaped ejector 86 is then inserted, with arms I IO straddling plunger 23 in the space between surfaces 130. Front outer comers 142 of arms 110 are deflected inward by cam surfaces 144 of housing 82 during insertion of ejector 86. As angled stop surfaces 124 of arms 110 pass angled stop surfaces I26 of housing 82, arms I 10 spring outward, and ejector 86 is retained within housing 82 by blocking of angled stop surfaces L24 by angled stop surfaces 126. All of the movable components of subassembly 3l are thus Iocked within housing 82 and prevented from falling out during part handling in preparation of assembly on frame 34.
partridge connecting subassembly 31 is mounted on frame 34 by inserting handle connecting structure 88 into recess 80 and staking housing 82 to frame 34 using pins 150.
Pins 150 pass through holes 152 in frame 34 and aligned holes 154 in the upper surface 90 of handle connecting structure 88 outside of lip 120. The pins are driven into the plastic of housing 82 at lower surfaces 130 outside of the region occupied by narrow portion of IJ-shaped ejector 86.
Button 32 is then inserted into opening I 14. Referring to Figs. 16 and I7, each extension 116 of ejector button 32 has an outwardly directed groove 160 that slides on a respective track 162 within opening 114. The upper surfaces 16I defining grooves 160 slide on the upper surfaces L64 of tracks I62, and the lower surfaces I66 defining groves 160 effect capture on or abut the lower surfaces I68 of tracks I62.
Extensions I t 6 have inclined surfaces 170 that coact with the curved upper corners of tracks I 62 to deflect extensions 116 inward as button 32 is inserted into opening 114. ~JVhen grooves 160 on extensions I 16 align with tracks 162, extensions I I6 substantially return to their undeflected position and lock ejector button 32 in place within opening I 14. The ends of extensions 1 I6 are located within rectangular region I I 8 and push against surfaces I72 of ejector 86 when ejector button 32 is pushed toward the end of handle 12. After button 32 has been inserted, upper vertical surfaces 174 of extensions I 16 sit within the space between upper surfaces 176 of opening 114. Bar I 78 serves to capture and guide spring 84.
Button 32 covers openings 154 so that the staking is not visible in the assembled product. Also, after a cartridge 14 has been attached, no part of subassembly 31 is visible (see Fig. 1), and thus the different materials used for housing 82 and frame 34 are not evident.
_g_ Other embodiments of the invention are within the scope of the appended claims,. In place of a trapezoidal extension shape for cartridge connecting structure 26, a six-sided structure, or other asymmetrical shape could be employed.
Claims (13)
1. A shaving razor handle comprising:
an elongated had gripping structure, and a cartridge support structure at an end of said hand gripping structure, said elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each said opening having a restricted area leading to a larger area region within said frame structure, each said gripping pad having a locking tab received in a said opening, each said locking tab having a portion that is located in said larger area region and is larger than said restricted area, wherein said gripping pads are crescent shaped with a broad area on an upper surface of said frame structure and two narrowing portions on two side portions, and wherein there is a said locking tab at each narrowing portion, and wherein said broad area carries an interlocking portion that interlocks with structure on said frame structure, and wherein said nonelastomeric plastic support layer has a lower surface that is concave between said locking tabs, wherein said frame structure has respective recessed areas in an outer surface, wherein said gripping pads are located in said recessed areas, and wherein said openings that receive respective said locking tabs are located in said recessed areas.
an elongated had gripping structure, and a cartridge support structure at an end of said hand gripping structure, said elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each said opening having a restricted area leading to a larger area region within said frame structure, each said gripping pad having a locking tab received in a said opening, each said locking tab having a portion that is located in said larger area region and is larger than said restricted area, wherein said gripping pads are crescent shaped with a broad area on an upper surface of said frame structure and two narrowing portions on two side portions, and wherein there is a said locking tab at each narrowing portion, and wherein said broad area carries an interlocking portion that interlocks with structure on said frame structure, and wherein said nonelastomeric plastic support layer has a lower surface that is concave between said locking tabs, wherein said frame structure has respective recessed areas in an outer surface, wherein said gripping pads are located in said recessed areas, and wherein said openings that receive respective said locking tabs are located in said recessed areas.
2. A shaving razor handle comprising:
an elongated had gripping structure, and a cartridge support structure at an end of said hand gripping structure, said elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each said opening having a restricted area leading to a larger area region within said frame structure, each said gripping pad having a locking tab received in a said opening, each said locking tab having a portion that is located in said larger area region and is larger than said restricted area, wherein said one gripping pad has two said locking tabs and has an interlocking portion between said locking tabs for interlocking with structure on said frame structure.
an elongated had gripping structure, and a cartridge support structure at an end of said hand gripping structure, said elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each said opening having a restricted area leading to a larger area region within said frame structure, each said gripping pad having a locking tab received in a said opening, each said locking tab having a portion that is located in said larger area region and is larger than said restricted area, wherein said one gripping pad has two said locking tabs and has an interlocking portion between said locking tabs for interlocking with structure on said frame structure.
3. A shaving razor handle comprising:
an elongated had gripping structure, and a cartridge support structure at an end of said hand gripping structure, said elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each said opening having a restricted area leading to a larger area region within said frame structure, said nonelastomeric plastic support layer of each said gripping pad having a locking tab received in a said opening, each said locking tab having a portion that is located in said larger area region and is larger than said restricted area.
an elongated had gripping structure, and a cartridge support structure at an end of said hand gripping structure, said elongated hand gripping structure including a frame structure with openings and a plurality of gripping pads that each comprise an elastomeric plastic outer gripping layer and a nonelastomeric plastic support layer thereunder, each said opening having a restricted area leading to a larger area region within said frame structure, said nonelastomeric plastic support layer of each said gripping pad having a locking tab received in a said opening, each said locking tab having a portion that is located in said larger area region and is larger than said restricted area.
4. The handle of claim 3 wherein at least one said gripping pad has an interlocking portion that underlies an overlying portion of said frame structure.
5. The handle of claim 3 wherein said gripping pads are crescent shaped with a broad area on an upper surface of said frame structure and two narrowing portions on two side portions, wherein said gripping pads have gripping ridges on said upper surface, wherein there is a said locking tab at each narrowing portion, and wherein said nonelastomeric plastic support layer has a lower surface that is concave between said locking tabs.
6. The handle of claim 3 wherein each said gripping pad has two said locking tabs received in a respective said opening.
7. The handle of claim 6 wherein said nonelastomeric plastic support layer has a lower surface that is concave between said locking tabs.
8. The handle of claim 3 wherein said frame structure has respective recessed areas in an outer surface, and said gripping pads are located in said recessed areas.
9. The handle of claim 8 wherein said openings that receive respective locking tabs are located in said recessed areas.
10. The handle of claim 3 wherein said restricted area is partially defined by a barb on said frame structure at said opening.
11. The handle of claim 3 wherein said restricted area is partially defined by facing barbs on said frame structure at said opening.
12. The handle of claim 10 or claim 11 wherein each said gripping pad has two said locking tabs received in respective said openings.
13. The handle of claim 10 or claim 11 wherein each said gripping pad has two said locking tabs received in respective said openings, and wherein said nonelastomeric plastic support layer has a lower surface that is concave between said locking tabs.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US802,814 | 1997-02-19 | ||
| US08/802,814 US5784790A (en) | 1996-04-10 | 1997-02-19 | Shaving razor and method |
| CA002279187A CA2279187C (en) | 1997-02-19 | 1998-02-18 | Shaving razor and method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002279187A Division CA2279187C (en) | 1997-02-19 | 1998-02-18 | Shaving razor and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2447158A1 CA2447158A1 (en) | 1998-08-27 |
| CA2447158C true CA2447158C (en) | 2005-01-11 |
Family
ID=30771598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002447158A Expired - Lifetime CA2447158C (en) | 1997-02-19 | 1998-02-18 | Shaving razor handle |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2447158C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD872365S1 (en) | 2018-05-09 | 2020-01-07 | Harry's, Inc. | Razor handle |
| US10807261B2 (en) | 2017-06-21 | 2020-10-20 | Harry's, Inc. | Razor handle |
-
1998
- 1998-02-18 CA CA002447158A patent/CA2447158C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10807261B2 (en) | 2017-06-21 | 2020-10-20 | Harry's, Inc. | Razor handle |
| USD872365S1 (en) | 2018-05-09 | 2020-01-07 | Harry's, Inc. | Razor handle |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2447158A1 (en) | 1998-08-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20180219 |