CA1158037A - One-piece razor handle for pivotable cartridge - Google Patents
One-piece razor handle for pivotable cartridgeInfo
- Publication number
- CA1158037A CA1158037A CA000365729A CA365729A CA1158037A CA 1158037 A CA1158037 A CA 1158037A CA 000365729 A CA000365729 A CA 000365729A CA 365729 A CA365729 A CA 365729A CA 1158037 A CA1158037 A CA 1158037A
- Authority
- CA
- Canada
- Prior art keywords
- cartridge
- handle
- razor
- camming surface
- cam follower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
- B26B21/14—Safety razors with one or more blades arranged transversely to the handle
- B26B21/22—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously
- B26B21/222—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit
- B26B21/225—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit the changeable unit being resiliently mounted on the handle
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
ONE-PIECE RAZOR HANDLE FOR PIVOTABLE CARTRIDGE Abstract of the Technical Disclosure A one-piece, open frame, molded plastic razor handle has diverging upper arms with cartridge-engaging ends that can be spread apart. An L-shaped cantilever beam cam follower has a rigid base extending inwardly from the inside surface of one of the arms, and a vertically resilient cantilever portion extending from the base toward a pivotable razor cartridge engaged by the handle. The cam follower has an edge that engages the cam surface of the pivotable razor cartridge.
Description
¦ ONF-pI~cE-~AzoR ll~ANDLE POR PIVOTAEILE CART RIDGI;
BACKGROUND
This invention relates to wet ~havin~ sy~tems usin~
~blade cartridges, and particularly to razor h~ndles adapted for ¦engagin~ blade cartridges that are pivotable ~bout the~r major ¦axis during ~having.
' Most wet shaving ~ystems avail~ble to~ay use blade cartridges rather than blades alone as the replaceable elements of the syste~. The cartridges allow precise location and orien-tation of the blade in its support structure, and are even more ; necessary for the use of dual blade systems, where two cutting edges are located in a cartridge in a precise relationship.
A numbe~ of techniques are used for attaching cartridges to razor handles. Furthermore, ~ome techniques ¦~include the significant addition of attaching the cartridge to the handle in a way that allows the cartridge to pivot, in a I controlled way, about its major axis. Piv~tal attachment of the cartridge allows the blade mounted in the cartridge to follow skin surface contours independently of the handle orientation.
The cartridge is pivotable between limits, and ordinarily is ;biased toward a preferred angular position vis-a-vis the handle.
In so~e cases, a portion of the cartridge has a camming surface that is adapted to meet a ca~ follower on the handle when the cartridge is attached. For example, Nissen et al. (U.S.
Patent No. 4,083,104) 6hows a pivotable blade cartridge in which a camming surface ~ engaged by a spring biased cam follower.
The camming surface slides along the front of the c~m follower, and the variation in the camming ~urface acts on the ~ollower in a generally horizontal way. The cam follower shown ~n the patent 30 i8 ~ mechani8m of ~everal p~rt~.
. -1-, ~. 158037 Trotta (U.S. Patent No. 4,09~,063) shows another pivoting cartridge and handle combina-tion. There the en-tire combin-ation is disposable, allowing some simplification of the assembly, since there need be no provision for disengaging the cartridge from the razor handle after it is used. Jaws with inwardly extending fingers for pivotally engaging apertures in the cartridge are resiliently e~pandable -to engage the car-tridge. In other words, the cartridge is "snapped" into engagement with the handle jaws. At the head of the handle is a horizontal bridge mounted on legs projecting from the handle. The bridge is a resilient cam follower that exerts biasing force on the cartridge camming surface as the camming surface slides vertically across it, moving it (like the Nissen device) generally horizontally. In a South African application corresponding to this U.S. patent, the bridge is additionally shown in a foxm in which it is split.
In U.S. Patents Nos. 3,938,247 (Carbonell et al.) and No. 3,935,659 (Terry et al.) cartridces are shown that are engaged by cantilever springs to control the pivotal move-ment of the cartridge.
It is desirable to simplify the razor handle used with blade cartridges, and to simplify the mechanisms for engaging the cartridge and particularly for biasing the pivotal move-ment of the cartridge. In another application by the applicant, Canadian Application No. 365,727, filed November 28, 1980, a one-piece razor handle is described that has diverging upper portions which respond to squeezing the handle by spreading apar-t so that cartridge-engaging fingers at the end of the upper portions disengage from the cartridge. It would be desirable to use such a razor handle fQr pivoting cartridges, but ~he movement of both upper portions I makes it difficult to impose a eentrally located CB~ follower.
! Similarly, ~itable handles in which the di~erging upper portions may be forced apart as by a mechanical 6preading force there-between, would also pre~ent the same problem.
Accordingly, it i~ an object of the invention to pr~-vide a razor handle that is simple and easy to attach to a pivo-, table razor blade cartridge. It i~ another object to provide arazor handle that has a sim~le, sure and reliable ca~ follower arrangement for the camming surface provided on pivotable razor cartridges, Another objec~ is to provide a razor handle meeting the above described ob~ects that is simple and inexpensive to !- manufacture l SU~IARY OF TH~ INVENTION
:` _ A one-piece razor handle with a pair of arms with i cartridge-enga~ing ends, diverging from a neck region, includes a `, resilient cantilever bea~ estending from one of the arms at a !i point remote from the neek region and having a forward edge for ~ engaging the camming surfa~e of a pivotable blade cartridge. The j edge is resiliently deflectable in the generally vertical direc-tion. In a preferred embodiment, the handle is plastic, the can-,tilever beam include~ a ~ortion extending inwardly from the arm ¦and an integrally connected cantilever portion, terminating in the forward edge, extending transversely from the rigid portion.
BRI~F DESCRIPTION OP THE DRAWING
I
j Other object~, fea~ures and advantages of ~he invention will ~e pointed out or will be readily apparent fro~ the following description of ~ pre~erred embodiment of the invention, includin~ the draw~ng in which:
. _3_ ~ ~58037 Eig. 1 is a rear perspective view o~ a ra~or cartri~ge and a razor handle constructed according to -the inventioni Fig. 2 is a detailed side view, partially in section, of the razor car-tridge in engagement with the razor handle cam follower; and Fig. 3 is a view like that of Fig. 2, showing the cartridge pivoted upwardly.
DESCRIPTION OF A PREFFERED EMsoDIMENT
Fig. 1 shows a typical pivotahle razor blade cartridge 10, and a razor handle 12 constructed according to the invention.
The cartridge rear surface 14 includes a pair of horizontally spaced, vertical wall members 16 projecting rearwardly. Each wall member 16 has a horizontally extending aperture 18 facing outwardly for engagemen-t by inwardly extending jaws of a razor handle.
The cartridge rear surface 14 also includes a central rearwardly projecting wall 2Q with a camming surface 22 facing rearwardly. The camming surface 22 is most shallow, or extends most forward, at a horizontal mid line 24 and extends gradually more rearwardly on either side of the mid line 24.
The razor handle 12 is a single piece open frame, molded from a plastic that provides some resiliency in the frame elements. The handle 12 includes two spaced apart vertical side walls 26 rising from a solid base portion 28. Above the base 2~, the walls 26 form a slot 30 between them, the slot 30 terminating at the upper part with a neck 32 extending from one side wall 26 to the other. The walls 26 are resiliently squeezable into the slot 30 by virtue of the characteristics of the plastic material used to form the handle 8()~7 Above ~he neck 32, the razor h~ndle wall~ 26 ~verge to ~form jaw-like upper wall portions 34 terminating with c~rt~idge engaging, horizont~lly lnwardly extending fingers 36 or engaginq the apertures 18 of the blade cartridge 10. The upper wall por-tions 34 are responsive to ~queezing of the handle side wall lower portions B8. When the lower portions 38 of the ~ide walls 26 are ~queezed together in the direction indicated by the arrows 39, the handle neck 32 acts like a fulcrum B0 that the upper por-tions 34 of the ~ide walls diverge in the direc~ion indicated by , the arrows 41. In this way the razor cartri`dge 10 can be i attached and detached to the handle 12. Alternatively, par-ticularly if the side walls of the handle are not so flexible, a machine may spread the jaws and finger~.
A cam follower 40 is al~o formed as part of the razor handle 12. The cam follower 40 is a generally L-shaped portion of the razor handle. It has a base por~ion 42 extending hori~on- ¦
' tally inwardly parallel to the ~artridge 10 from the inside sur- !
`~ face 44 o~ one of the ~ide wall upper portions 34. The base I,portion 42 is joined to a central portion 46 extending generally .hori20ntally toward the cartridge 10 and terminating in a cam ¦follower edge 48. The cam follower edge 48 is located so ~hat ~when the cartridge 10 and han~le 1. are engaged via the handle fingers 36, the edge 48 ~but~ the cam 6urface 22 ~t its ~id line 24 (see Fig. 2~. The line of engagement of the ca~ follower edge 48 and ca~ surface 22 at ~he mid line 24 is behind the pivot axis of the cartridge 10, the axis being defined by the location of the ~artridge engaging finger~ 36. The ~am follower 40 is re~i-liently ~lexible about a ~orizontal axis aligned generally with the base portion 42 60 that the ca~ ~ollower edge 48 is ~ovable in a gener~lly ver~cal direction. The edge 4B applies a pre--, -5-.' t 1S~037 losd biasing force to ca~ ~urf~ce 22 to l~ure th~t the cartridge 10 ~s~umes a neutral angle in the absence of ~having f~rces.
The razor handle 12 of thi~ embodiment ~ used to e.~gage the blade cartridge 10 by pinching, or ~queezing, the lower portions 38 of the h~ndle wall6 26 at a point between the handle neck 32 and the handle base 28, preferably midway between ~ the two. This 6preads the wall upper portions 34 as the neck ~2 !` acts like a fulcrum. The razor handle 12 is positioned relative ' to blade cartridge 10 so that the pair of cartridge apertures 18 ~l is ~etween the fingers 36 projecting inwardly from the spread apart wall upper ~ortions 34. When the ~andle walls 26 are re!eased, the upper portions 34 return to their original posi-tion, with the fingers 36 now inserted into the apertures lB.
The cartrid~e 10 i5 pivotable about an axis extending through the fingers 36 when it is engaged in the manner set out ! above. However, in its engaged position the cartridge is also affected by the relationship between its cam ~urface 22 and the i cam follower 40 of the handle 12. The edge 48 of the cam ¦.follower abuts the cam surface 22 at its shallow mid line 24.
j Without any other forces acting on the cartridqe, the cam ! follower edge maintains the cartridqe at a neutral position ;corresponding to the relaxed position of the cam follower 40.
During shavinq, however, forces are generated that ~ause the cartridge 10 to pivot about the handle finger~ 36. ~he forces are transmitted to the cam follower edge 48 by ~he ~am surface 22, and the cam follower 20 is deflected ~ccordingly. Thus, as ¦shaving produces an upward force on the ~ront of the cartridge (~ee Fig. 3), the am ~urface 22 tend~ to deflect the cam follower edge 4B vertic~lly downwardly. The resilience of the 11581)37 cam follower 40 urges it ~o re6ume lt6 original position, and if the changing contour o ~he surf~ce being shaved change~ ~he Inature of the forces acting on the car~ridge 10, the cam follower : j~0 will urge the cartridge back toward its neutral po~ition.
With this arrangement of the cam ~urface 22 and the cam follo~er 40, the pi~otin~ m~tion of the cartridge 10 is trans-~formed into vertical motion of the cam follower edge 4B. Thebase portion 42 of the cam follower is relatively non-resilient l and immovable because of its connection to the razor handle upper portion 34, and because lts cross-~ectional area i5 made large ¦ enough. The central portion 46, on the other hand, is relatively resilient because its cross-section is thin and because it is a j distance from the handle to which it i5 atta~hed, in a c~ntilever ' arrangement.
The configuration of the cam follower 40 allows its use with the open, ~preadable upper portions 34 o~ the razor handle 12. The open framework sf the handle 12 dictates against having ; a ~head" of the handle on which a cam follower can be mounted. A
¦'head would interfere with the ~preadability of the handle upper ¦ portions. The cam follower 40 of the invention is mounted as a ~cantilever beam on a side of one of the diverging wall upper por-tions ~4, so ~hat the upper portions 34 may be spread out easily by squeezing the wall lower p~rtions 38 without interference ~rom structure supporting a cam follower.
Additions, dele~ions and modific~tions o~ the preferred embodiment illu~trating the invention ~ay be made by those skilled in the art ~nd are wi~hin th~ scope of t~e invention, as defined b ehe ~ollowing claim~
BACKGROUND
This invention relates to wet ~havin~ sy~tems usin~
~blade cartridges, and particularly to razor h~ndles adapted for ¦engagin~ blade cartridges that are pivotable ~bout the~r major ¦axis during ~having.
' Most wet shaving ~ystems avail~ble to~ay use blade cartridges rather than blades alone as the replaceable elements of the syste~. The cartridges allow precise location and orien-tation of the blade in its support structure, and are even more ; necessary for the use of dual blade systems, where two cutting edges are located in a cartridge in a precise relationship.
A numbe~ of techniques are used for attaching cartridges to razor handles. Furthermore, ~ome techniques ¦~include the significant addition of attaching the cartridge to the handle in a way that allows the cartridge to pivot, in a I controlled way, about its major axis. Piv~tal attachment of the cartridge allows the blade mounted in the cartridge to follow skin surface contours independently of the handle orientation.
The cartridge is pivotable between limits, and ordinarily is ;biased toward a preferred angular position vis-a-vis the handle.
In so~e cases, a portion of the cartridge has a camming surface that is adapted to meet a ca~ follower on the handle when the cartridge is attached. For example, Nissen et al. (U.S.
Patent No. 4,083,104) 6hows a pivotable blade cartridge in which a camming surface ~ engaged by a spring biased cam follower.
The camming surface slides along the front of the c~m follower, and the variation in the camming ~urface acts on the ~ollower in a generally horizontal way. The cam follower shown ~n the patent 30 i8 ~ mechani8m of ~everal p~rt~.
. -1-, ~. 158037 Trotta (U.S. Patent No. 4,09~,063) shows another pivoting cartridge and handle combina-tion. There the en-tire combin-ation is disposable, allowing some simplification of the assembly, since there need be no provision for disengaging the cartridge from the razor handle after it is used. Jaws with inwardly extending fingers for pivotally engaging apertures in the cartridge are resiliently e~pandable -to engage the car-tridge. In other words, the cartridge is "snapped" into engagement with the handle jaws. At the head of the handle is a horizontal bridge mounted on legs projecting from the handle. The bridge is a resilient cam follower that exerts biasing force on the cartridge camming surface as the camming surface slides vertically across it, moving it (like the Nissen device) generally horizontally. In a South African application corresponding to this U.S. patent, the bridge is additionally shown in a foxm in which it is split.
In U.S. Patents Nos. 3,938,247 (Carbonell et al.) and No. 3,935,659 (Terry et al.) cartridces are shown that are engaged by cantilever springs to control the pivotal move-ment of the cartridge.
It is desirable to simplify the razor handle used with blade cartridges, and to simplify the mechanisms for engaging the cartridge and particularly for biasing the pivotal move-ment of the cartridge. In another application by the applicant, Canadian Application No. 365,727, filed November 28, 1980, a one-piece razor handle is described that has diverging upper portions which respond to squeezing the handle by spreading apar-t so that cartridge-engaging fingers at the end of the upper portions disengage from the cartridge. It would be desirable to use such a razor handle fQr pivoting cartridges, but ~he movement of both upper portions I makes it difficult to impose a eentrally located CB~ follower.
! Similarly, ~itable handles in which the di~erging upper portions may be forced apart as by a mechanical 6preading force there-between, would also pre~ent the same problem.
Accordingly, it i~ an object of the invention to pr~-vide a razor handle that is simple and easy to attach to a pivo-, table razor blade cartridge. It i~ another object to provide arazor handle that has a sim~le, sure and reliable ca~ follower arrangement for the camming surface provided on pivotable razor cartridges, Another objec~ is to provide a razor handle meeting the above described ob~ects that is simple and inexpensive to !- manufacture l SU~IARY OF TH~ INVENTION
:` _ A one-piece razor handle with a pair of arms with i cartridge-enga~ing ends, diverging from a neck region, includes a `, resilient cantilever bea~ estending from one of the arms at a !i point remote from the neek region and having a forward edge for ~ engaging the camming surfa~e of a pivotable blade cartridge. The j edge is resiliently deflectable in the generally vertical direc-tion. In a preferred embodiment, the handle is plastic, the can-,tilever beam include~ a ~ortion extending inwardly from the arm ¦and an integrally connected cantilever portion, terminating in the forward edge, extending transversely from the rigid portion.
BRI~F DESCRIPTION OP THE DRAWING
I
j Other object~, fea~ures and advantages of ~he invention will ~e pointed out or will be readily apparent fro~ the following description of ~ pre~erred embodiment of the invention, includin~ the draw~ng in which:
. _3_ ~ ~58037 Eig. 1 is a rear perspective view o~ a ra~or cartri~ge and a razor handle constructed according to -the inventioni Fig. 2 is a detailed side view, partially in section, of the razor car-tridge in engagement with the razor handle cam follower; and Fig. 3 is a view like that of Fig. 2, showing the cartridge pivoted upwardly.
DESCRIPTION OF A PREFFERED EMsoDIMENT
Fig. 1 shows a typical pivotahle razor blade cartridge 10, and a razor handle 12 constructed according to the invention.
The cartridge rear surface 14 includes a pair of horizontally spaced, vertical wall members 16 projecting rearwardly. Each wall member 16 has a horizontally extending aperture 18 facing outwardly for engagemen-t by inwardly extending jaws of a razor handle.
The cartridge rear surface 14 also includes a central rearwardly projecting wall 2Q with a camming surface 22 facing rearwardly. The camming surface 22 is most shallow, or extends most forward, at a horizontal mid line 24 and extends gradually more rearwardly on either side of the mid line 24.
The razor handle 12 is a single piece open frame, molded from a plastic that provides some resiliency in the frame elements. The handle 12 includes two spaced apart vertical side walls 26 rising from a solid base portion 28. Above the base 2~, the walls 26 form a slot 30 between them, the slot 30 terminating at the upper part with a neck 32 extending from one side wall 26 to the other. The walls 26 are resiliently squeezable into the slot 30 by virtue of the characteristics of the plastic material used to form the handle 8()~7 Above ~he neck 32, the razor h~ndle wall~ 26 ~verge to ~form jaw-like upper wall portions 34 terminating with c~rt~idge engaging, horizont~lly lnwardly extending fingers 36 or engaginq the apertures 18 of the blade cartridge 10. The upper wall por-tions 34 are responsive to ~queezing of the handle side wall lower portions B8. When the lower portions 38 of the ~ide walls 26 are ~queezed together in the direction indicated by the arrows 39, the handle neck 32 acts like a fulcrum B0 that the upper por-tions 34 of the ~ide walls diverge in the direc~ion indicated by , the arrows 41. In this way the razor cartri`dge 10 can be i attached and detached to the handle 12. Alternatively, par-ticularly if the side walls of the handle are not so flexible, a machine may spread the jaws and finger~.
A cam follower 40 is al~o formed as part of the razor handle 12. The cam follower 40 is a generally L-shaped portion of the razor handle. It has a base por~ion 42 extending hori~on- ¦
' tally inwardly parallel to the ~artridge 10 from the inside sur- !
`~ face 44 o~ one of the ~ide wall upper portions 34. The base I,portion 42 is joined to a central portion 46 extending generally .hori20ntally toward the cartridge 10 and terminating in a cam ¦follower edge 48. The cam follower edge 48 is located so ~hat ~when the cartridge 10 and han~le 1. are engaged via the handle fingers 36, the edge 48 ~but~ the cam 6urface 22 ~t its ~id line 24 (see Fig. 2~. The line of engagement of the ca~ follower edge 48 and ca~ surface 22 at ~he mid line 24 is behind the pivot axis of the cartridge 10, the axis being defined by the location of the ~artridge engaging finger~ 36. The ~am follower 40 is re~i-liently ~lexible about a ~orizontal axis aligned generally with the base portion 42 60 that the ca~ ~ollower edge 48 is ~ovable in a gener~lly ver~cal direction. The edge 4B applies a pre--, -5-.' t 1S~037 losd biasing force to ca~ ~urf~ce 22 to l~ure th~t the cartridge 10 ~s~umes a neutral angle in the absence of ~having f~rces.
The razor handle 12 of thi~ embodiment ~ used to e.~gage the blade cartridge 10 by pinching, or ~queezing, the lower portions 38 of the h~ndle wall6 26 at a point between the handle neck 32 and the handle base 28, preferably midway between ~ the two. This 6preads the wall upper portions 34 as the neck ~2 !` acts like a fulcrum. The razor handle 12 is positioned relative ' to blade cartridge 10 so that the pair of cartridge apertures 18 ~l is ~etween the fingers 36 projecting inwardly from the spread apart wall upper ~ortions 34. When the ~andle walls 26 are re!eased, the upper portions 34 return to their original posi-tion, with the fingers 36 now inserted into the apertures lB.
The cartrid~e 10 i5 pivotable about an axis extending through the fingers 36 when it is engaged in the manner set out ! above. However, in its engaged position the cartridge is also affected by the relationship between its cam ~urface 22 and the i cam follower 40 of the handle 12. The edge 48 of the cam ¦.follower abuts the cam surface 22 at its shallow mid line 24.
j Without any other forces acting on the cartridqe, the cam ! follower edge maintains the cartridqe at a neutral position ;corresponding to the relaxed position of the cam follower 40.
During shavinq, however, forces are generated that ~ause the cartridge 10 to pivot about the handle finger~ 36. ~he forces are transmitted to the cam follower edge 48 by ~he ~am surface 22, and the cam follower 20 is deflected ~ccordingly. Thus, as ¦shaving produces an upward force on the ~ront of the cartridge (~ee Fig. 3), the am ~urface 22 tend~ to deflect the cam follower edge 4B vertic~lly downwardly. The resilience of the 11581)37 cam follower 40 urges it ~o re6ume lt6 original position, and if the changing contour o ~he surf~ce being shaved change~ ~he Inature of the forces acting on the car~ridge 10, the cam follower : j~0 will urge the cartridge back toward its neutral po~ition.
With this arrangement of the cam ~urface 22 and the cam follo~er 40, the pi~otin~ m~tion of the cartridge 10 is trans-~formed into vertical motion of the cam follower edge 4B. Thebase portion 42 of the cam follower is relatively non-resilient l and immovable because of its connection to the razor handle upper portion 34, and because lts cross-~ectional area i5 made large ¦ enough. The central portion 46, on the other hand, is relatively resilient because its cross-section is thin and because it is a j distance from the handle to which it i5 atta~hed, in a c~ntilever ' arrangement.
The configuration of the cam follower 40 allows its use with the open, ~preadable upper portions 34 o~ the razor handle 12. The open framework sf the handle 12 dictates against having ; a ~head" of the handle on which a cam follower can be mounted. A
¦'head would interfere with the ~preadability of the handle upper ¦ portions. The cam follower 40 of the invention is mounted as a ~cantilever beam on a side of one of the diverging wall upper por-tions ~4, so ~hat the upper portions 34 may be spread out easily by squeezing the wall lower p~rtions 38 without interference ~rom structure supporting a cam follower.
Additions, dele~ions and modific~tions o~ the preferred embodiment illu~trating the invention ~ay be made by those skilled in the art ~nd are wi~hin th~ scope of t~e invention, as defined b ehe ~ollowing claim~
Claims (6)
1. A one-piece razor handle for pivotal engagement of a razor blade cartridge having a camming surface for engagement with a cam follower, said razor handle comprising:
a vertical body portion adapted to be held by a shaver, said body portion having a neck region, and a pair of diverging arms extending upwardly from said neck region, said diverging arms including means for engaging said blade cartridge, wherein the improvement comprises said handle further including:
a cantilever beam extending from a location on one of said diverging arms remote from said neck region toward said camming surface for camming engagement with said camming surface, said cantilever beam being resiliently deflectable in a generally vertical direction.
a vertical body portion adapted to be held by a shaver, said body portion having a neck region, and a pair of diverging arms extending upwardly from said neck region, said diverging arms including means for engaging said blade cartridge, wherein the improvement comprises said handle further including:
a cantilever beam extending from a location on one of said diverging arms remote from said neck region toward said camming surface for camming engagement with said camming surface, said cantilever beam being resiliently deflectable in a generally vertical direction.
2. The one-piece handle as claimed in claim 1, having a single cantilever beam extending from one of said diverging arms.
3. The one-piece handle as claimed in claim 1 wherein said beam comprises:
a first portion extending inwardly from said location, generally parallel to said blade cartridge, and a second portion, integrally formed with said first portion, extending transversely from said first portion toward said cartridge camming surface.
a first portion extending inwardly from said location, generally parallel to said blade cartridge, and a second portion, integrally formed with said first portion, extending transversely from said first portion toward said cartridge camming surface.
4. The one-piece handle as claimed in claim 1 wherein said cantilever beam includes a substantially rigid base portion extending from one of said diverging arms and a substantially vertically resilient cantilever portion ex-tending from said base portion toward said cartridge camming surface.
5. A one-piece razor handle for pivotal engagement of a razor blade cartridge having a camming surface for engagement with a cam follower, said razor handle comprising:
a vertical body portion adapted to be held by a shaver, said body portion having a neck region, a pair of diverging arms extending upwardly from said neck region, said diverging arms including means for engaging said blade cartridge, and a single cantilever beam, said beam comprising:
a base portion extending inwardly from a location on one of said diverging arms remote from said neck region, generally parallel to said blade cartridge, and a cantilever portion, integrally formed with said base portion, extending transversely from said base portion toward said cartridge camming surface, and terminating in a forward edge for camming engagement with said camming surface, said cantilever beam being resiliently deflectable in a generally vertical direction.
a vertical body portion adapted to be held by a shaver, said body portion having a neck region, a pair of diverging arms extending upwardly from said neck region, said diverging arms including means for engaging said blade cartridge, and a single cantilever beam, said beam comprising:
a base portion extending inwardly from a location on one of said diverging arms remote from said neck region, generally parallel to said blade cartridge, and a cantilever portion, integrally formed with said base portion, extending transversely from said base portion toward said cartridge camming surface, and terminating in a forward edge for camming engagement with said camming surface, said cantilever beam being resiliently deflectable in a generally vertical direction.
6. In a one-peice flexible plastic handle structure terminating in a pair of diverging arms defining a yoke of the type operable to make and break a pivotal connection with a blade cartridge, said cartridge being pivotal about a first axis and having a cam operable to cooperate with a cam follower for orienting the cartridge relative to the handle, the improvement comprising:
a cam follower projecting from a yoke arm and co-operating with said cam, said cam having a concave face with a central midline, said cam follower defining a flexible fin terminating in a cam following knife edge, said knife edge making snug, relatively fixed, line contact with said midline, said fin being operable to flex about a second axis in one direction when the blade cartridge rotates in the opposite direction in response to shaving forces, said second axis being generally parallel to and spaced from said first axis.
a cam follower projecting from a yoke arm and co-operating with said cam, said cam having a concave face with a central midline, said cam follower defining a flexible fin terminating in a cam following knife edge, said knife edge making snug, relatively fixed, line contact with said midline, said fin being operable to flex about a second axis in one direction when the blade cartridge rotates in the opposite direction in response to shaving forces, said second axis being generally parallel to and spaced from said first axis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10874179A | 1979-12-31 | 1979-12-31 | |
| US108,741 | 1979-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1158037A true CA1158037A (en) | 1983-12-06 |
Family
ID=22323796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000365729A Expired CA1158037A (en) | 1979-12-31 | 1980-11-28 | One-piece razor handle for pivotable cartridge |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS56100090A (en) |
| AU (1) | AU533266B2 (en) |
| BE (1) | BE886916A (en) |
| BR (1) | BR8008557A (en) |
| CA (1) | CA1158037A (en) |
| DE (1) | DE3049478A1 (en) |
| FR (1) | FR2472449A1 (en) |
| GB (1) | GB2066133B (en) |
| HK (1) | HK65283A (en) |
| NL (1) | NL185397C (en) |
| SE (1) | SE8008944L (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8406683D0 (en) * | 1984-03-14 | 1984-04-18 | Wilkinson Sword Ltd | Razor system |
| JPS612887A (en) * | 1984-06-15 | 1986-01-08 | フエザ−安全剃刀株式会社 | Razor guide structure in double-blade safety razor |
| FR2619045B1 (en) * | 1987-08-07 | 1989-12-29 | Conversy Francois | RAZOR COMPRISING A HANDLE AND A ARTICULATED HEAD THEREOF |
| US4785534A (en) * | 1987-12-07 | 1988-11-22 | The Gillette Company | Razor |
| AU638974B2 (en) * | 1989-06-05 | 1993-07-15 | Warner-Lambert Company | Razor mechanism |
| GB9715501D0 (en) * | 1997-07-22 | 1997-10-01 | Gillette Co | Safety razors |
| US6122826A (en) * | 1998-04-22 | 2000-09-26 | Warner-Lambert Company | Disposable cartridge holder for single direction pivoting cartridge |
| US8256532B2 (en) | 2005-07-01 | 2012-09-04 | Board Of Regents, The University Of Texas System | System, program products, and methods for controlling drilling fluid parameters |
| JP2007307078A (en) * | 2006-05-17 | 2007-11-29 | Yoshio Yabe | Portable t-shaped vibration razor |
| US7770294B2 (en) * | 2007-08-30 | 2010-08-10 | The Gillette Company | Razor with blade unit biasing member |
| EP2123410B1 (en) | 2008-05-23 | 2011-07-27 | Feintechnik GmbH Eisfeld | Razor blade unit with film hinge |
| US8745883B2 (en) * | 2010-09-29 | 2014-06-10 | The Gillette Company | Razor handle with a rotatable portion |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2710447A (en) * | 1950-02-15 | 1955-06-14 | Central Ind Corp | Safety razor |
| US4083104A (en) * | 1975-05-12 | 1978-04-11 | The Gillette Company | Razor handle |
| AU507532B2 (en) * | 1976-12-15 | 1980-02-21 | The Gillette Company | Razor handle |
-
1980
- 1980-11-28 CA CA000365729A patent/CA1158037A/en not_active Expired
- 1980-12-05 NL NL8006640A patent/NL185397C/en not_active IP Right Cessation
- 1980-12-18 SE SE8008944A patent/SE8008944L/en not_active Application Discontinuation
- 1980-12-18 AU AU65535/80A patent/AU533266B2/en not_active Ceased
- 1980-12-23 GB GB8041190A patent/GB2066133B/en not_active Expired
- 1980-12-27 JP JP18944280A patent/JPS56100090A/en active Granted
- 1980-12-30 BR BR8008557A patent/BR8008557A/en unknown
- 1980-12-30 DE DE19803049478 patent/DE3049478A1/en active Granted
- 1980-12-30 FR FR8027745A patent/FR2472449A1/en active Granted
- 1980-12-30 BE BE0/203364A patent/BE886916A/en not_active IP Right Cessation
-
1983
- 1983-12-08 HK HK65283A patent/HK65283A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0116513B2 (en) | 1989-03-24 |
| HK65283A (en) | 1983-12-16 |
| DE3049478C2 (en) | 1990-05-03 |
| FR2472449A1 (en) | 1981-07-03 |
| SE8008944L (en) | 1981-07-01 |
| JPS56100090A (en) | 1981-08-11 |
| NL8006640A (en) | 1981-08-03 |
| BE886916A (en) | 1981-04-16 |
| DE3049478A1 (en) | 1981-10-15 |
| GB2066133B (en) | 1983-04-20 |
| BR8008557A (en) | 1981-07-21 |
| NL185397C (en) | 1990-04-02 |
| GB2066133A (en) | 1981-07-08 |
| AU533266B2 (en) | 1983-11-10 |
| AU6553580A (en) | 1981-07-09 |
| FR2472449B1 (en) | 1984-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20001206 |