CA2076534C - Safety razors and blade units therefor - Google Patents
Safety razors and blade units thereforInfo
- Publication number
- CA2076534C CA2076534C CA002076534A CA2076534A CA2076534C CA 2076534 C CA2076534 C CA 2076534C CA 002076534 A CA002076534 A CA 002076534A CA 2076534 A CA2076534 A CA 2076534A CA 2076534 C CA2076534 C CA 2076534C
- Authority
- CA
- Canada
- Prior art keywords
- blade
- frame
- support
- edge
- razor head
- 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 - Fee Related
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
- B26B21/227—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 with blades being resiliently mounted in the changeable unit
-
- 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
- B26B21/02—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 unchangeable blades
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
- Gloves (AREA)
- Crushing And Pulverization Processes (AREA)
- Knives (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Sawing (AREA)
Abstract
A safety razor head comprises a head frame (101) carrying a cap member (104) and two blade units (105) all mounted in slots in end walls (103) of the frame (101) so as to be movable vertically, i.e. towards and away from the base (102) of the frame. The movable elements are urged upwardly by springs (106). The blade units (105) comprise metal pressing (108) of inverted L-shaped cross-section. Blade members (107) are attached to the top limbs (109) and guard portions (111, 112) are spaced forwardly of the blade edges (107A). The pressing (108) has projecting ears (114) at opposite ends by which each unit is mounted in the frame (101) for limited pivotal movement about an axis parallel with and close to the blade edge (107A).
Description
WO91/14~6 PCT/US91/01926 2 Q 7 ~
,, 1 ,, SAFETY RAZORS AN~ BLADE UNITS ~ln~K~:~OR
This invention relates to safety razors and to blade units for incorporation in safety razors.
, The invention aims at the provision of a safety razor having a high degree of "confoL ~nce~l, tha~
is to say the ability to permit or constrain the skin-engaging elements of the razor to maintain optimum contact with the varying contours of the skin during a , shaving operation. . :. .
In accordance with a feature of the present invention, a blade unit for a safety razor comprises a blade having a sha~e1~ed cutting edge and a blade .su~G.L comprising a platform to which the blade is , attaçh~ with its:edge projecting forwardly of the ,: . 15 ~platform,:characterized-in that the c~port further .~comprisesian integral guard portion space~ forwardly of the blade,edge,j,and-.mounting means.on the ~u~G ~'by ,,. ,,whi$h..thefintegral,~guard and blade are mounted in use in , .~,. .a razorihead,-for rotation.together.about an axis .,~,20 -par.allel~with and close toLthe.blade edge.
.The invention.,-also.includes''a safety razor including a head;frame.in which:.at.leastione sucX blade unit is mounted for;,rotation-.about'the said axis.
-f;' ~.Preferably,.the (or..each) unit is also mounted : 25 ~for,;movement relative to~the-frame,under--forces ,~ ~., enco~nte,r,ed.i,during~shaving~ J ~qi~ inct the:~action of a resilient~restoring~force~ in directions'transve'rse ""
.. . :
WO91/14~6 PCT/US91/01926 2e~ 2 - ~"
(i.e. substantially perpendicular) to a notional plane containing the blade edge and a skin engaging surface of the guard portion.
A blade unit and safety razor head frame in accordance with the invention and some modifications ~ thereof, will now be described, by way of example, with reference to the accompanying drawings, in which: ', Figs. 1 and 2 are perspective views of an end portion of the head frame and of~a blade unit, respectively;
Fig. 3 is a cross-section taken at the sectioning line in Figure 1, showing the blade units and a cap 'er in the normal positions of rest;
Fig. 4 corresponds with Fig. 3, and shows the parts in different relative positions;
Fig. 5 is a diagrammatic cross-section illustrating different positions of the cap and blade units in use;
~ Fig. 6 is an exploded pe~i7~e.-i-ive view of a modified razor head frame and blade units; and . Fig...7.is a cross-section of the head frame of ,~,." Fig.,6, correspQn~ing with-Fig. 5.~
--,. ... . :...: The razor head.shown in Figs. l'to,4 comprises ., a metal or - l~e~.-plastics head frame 1 having an :,25~, elongate-base 2.and,:upst~n~ing:end walls 3 at opposite . , ends thereof.~:Only onei.end of the frame:-is shown in .these Figs...tbie.oppositelend~being a mirror image.
..,-,~..,i IThe~;head frame ~ .poL~s"alcap member 4,'two ~ blade.units 5,iand,~three:pairs-.of ? cantilever wire springs , ~ 30 ~~;, 6 ~ I whose~inner~ends.(not~shown)~are secured'to the .,?,;rmedial portion.of.i-the~elongate base.;~
-,. ." . ..: .i Each blade.unit 5 consists of a narrow blade -7,~having:ai~sharpened.cutting edge~7A','-and:a~blade , Su~G~ ~ ~ 8 formed~asian-L-cih~rp~ metal--stâmping to .'.35 'i' ~eprovide a-platform 9 and:a-guard portion-~providing a curvéd skin engaging guard surface 11 and a depen~ing leg 12. The ~iiuy~ol~ has a slot 13 over most of its - . ~ ': . '~.:
' ." .
- ~ .
, WO91/14~6 ' ~ PCT/US91/01926 ~; . .
1 ',,',, ,~ .
length to form a space between the platform g and the guard portion and the blade 7 is securely attached to the platform with.its edge 7A projecting forwardly into that space, forwardly of the platform.
At its ends, the support 8 is formed with upwardly offset, projecting ears 14 which are abuttingly engaged from below by upst~n~ i ng end portions 6A of the wire springs 6.
The cap member 4 consists of a ch-~~nnel shaped ~ 10 support 16 in which a cap moulding 17 is secured.
The cap - ber and blade units are captured at their ends in recesses formed in the.end walls 3 of the head frame. More.specifically, the ears 14 of the blade su~olLs engage in narrow vertical slots 18 which also receive the vertical end portions 6A.of the respective . wire springs. Alongside.each slot.l8 is a shallower, ~ wider recess.l9 whose forward face.21 acts as a stop for .
the adjacent end of the respective leg 12.
Thus, each blade unit is guided for vertical ~ - L in the head.frame by-engagement of-its ears 14 . - in the slots 18. The springs 6 are pre-stressed so that in the.normal,trest position,.the blade units are held .!. .U: by the.springs in.-their:-outermost:positions, as shown in Fig...3...The spring ends 6A:are:guided and constrained -~ 25~ for.:vertical movement:.in~their.les~e~ive'slots 18 and are pointed at their upper~.ends, where~they engage the .ears;14 so as~to.:provide fulcrums;-permitting rotational movement of-.the~units:about.axes~parallel.with and close ; .to.-.the~.cutti..~ edyas.of~the. es~e~ive-.hl~s. As best -illustrated~.in.Fig;~4, this rotational~:m~ -nt is Ji-.; E~ limited~by.. :engagement~of the~ends of the-legs 12 with .the.rear...faces..~ofsslots 18:and the forward'~faces 21 of . rec~s~ses 19, respectively.~The.~cap~member 4~ which is set beh;n~.the blade units~~in;the-shaving direction, is .~ nA..~35~:, constrained and,guided-for..vertical'movement~onlyg:
s parallel with~the~correspon~n~ muie -nt'.~of the blade units. The cap:mémber:-is-also urged:to;its outermost ., .
WO91/14~6 ~ PCT/US91/01926 9 ~7,J ~.
position by its respective wire springs 6, as shown in Fig. 3.
- Fig. 4.shows the moving parts in their inner-most positions, in which their springs 6 are "bottomed"
against the base 2 of.the frame.
In use of the razor, the cap and blade units are able to conform closely to the differing contours of the skin areas being shaved by virtue of their being able to move, independently of each other and against ~ lO the resilient restoring forces of their springs, according;to the forces which they experience. This indepen~en~-e of motion is known in itself but, significantly, the blade units are also able to pivot freely in order.to permit each unit to maintain close contact.with the skin at both its cutting edge 7A and - .its skin engaging guard surface ll,-thus preserving its optimum attitude in spite of variations in the contours of the skin surface. This is due to the fact that the pivotal axis of each unit is parallel with and just ahead of the sharpened edge of the blade.
. In Fig. 5, the.variations in skin contours are i.~.;;-~; exaggerated to..illustrate the:way.in:which the moving - . -. parts of.:the.razor accommodate t1n~ ations in the skin . - -surface.and in.particular how the~attitudes.~of the blade .-. . 25 -units are adjusted automatically to:-maintain the desired .~ ~. contact.with the-::skin.... . . ~
The.translational.movement of~the units is .described above as~being.i.nvertical n. iThis,nof course, i .assumes a ~pec~fic attitude-of-the razor head. The 30 ~~sense.~of~the.~requisite movement,.:-regardless..of the' z~-; attitude of the~razor;~is;*ransverse to~a.;notional plane n~ cont~ the blade:edge.iand the.~skin engaging surface ~ of the guard~portion.. ~ a ..; ti1o..i:. ssLn ~r~v~Because~of~the self-guarding.:nature of the 35l- blade-units,_it~will~generally-be 1lnnpcpsci~ry to provide a separated guard memberj.but.-if.-one is~provided, it can be mounted for translational-: v~ ,rnt, with~a spring - . . _ _ .
.
' ~
.
wosl/l4~6 PCT/US91/01926 ~'- 207~
suspension, in the same ~nner as the cap member.
The razor could of course have a single blade unit or three or more if desired, but two units are presently regarded as optimal. ...
. .
,,.~ Figs. 6 and 7 illustrate a,modified form of blade unit,,and head frame which are generally similar to . .
the above described ~ ho~; ment but.with some structural modifications,.principally as described below. Parts of ,the modified embodiment are given.reference numerals . .. . .... . .. . . . . .
10, increased by 100 compared with the numerals used for corresponding parts in.the first embodiment.
. , , The,blade units 105 are virtually identical ... .......
,,, with those first described, save that the ear~ 114 are in the same plane as.the guard portion rather than being ,,upwardly offset.; As a result the pivotal axis 'A' of the unit is set lower than in the first.embodiment.
., . . The moulded head frame lOl is of a different , construction, being,provided in known manner with .. . . .. . ............ .. . . . .
depen~;ng legs.22 by which the frame is adapted for ,, . ,~ . .. .. .. .. . .
releasable,mounting on..the.upper end of a.razor handle with limited freedom to;pivot, relative,to the handle, 3~ about a51Ongit~ nAl .axis~ 7,~
The.upper...surface,of.,the-base.102-is formed with.,an;upstAn~ng~pip 102A destined.,,to-provide,an inte-gral.rivet..~for..securing a metallic.spring member com-~3~ ; .prising a..rectan~ular ~ l portion,106A having inte-: gral spring,,fingers~106~exte~n~1Ongit~ nAl1y:away~
, and also upwardly from the plane of the portion.,106A.
~ 3 ~ The re~ar~nwall~of,~the",frame s~101; is formed with ~ 30 ~.a chAnn~l to receive the~caprmo~ ng 117 in.a.~fixed ~,r,qr,Position-~ d ~r~ /'tJ l ~lrl~,'b ~ r,~~~
n~the.end,walls.103,.of, the fr,a,me,.,-the,,slots ,118Jrland rec~sses, ll9.iare completelx~open from above and sep~arate.clips 123.are.,provided,for~ret~in~ the.plade ~35,_ ~units L,by, their~ears,-ll4,J,to the frame..~ ,,*~s, ~: The function and operation of the blade,units is as described above.
:: .
,, 1 ,, SAFETY RAZORS AN~ BLADE UNITS ~ln~K~:~OR
This invention relates to safety razors and to blade units for incorporation in safety razors.
, The invention aims at the provision of a safety razor having a high degree of "confoL ~nce~l, tha~
is to say the ability to permit or constrain the skin-engaging elements of the razor to maintain optimum contact with the varying contours of the skin during a , shaving operation. . :. .
In accordance with a feature of the present invention, a blade unit for a safety razor comprises a blade having a sha~e1~ed cutting edge and a blade .su~G.L comprising a platform to which the blade is , attaçh~ with its:edge projecting forwardly of the ,: . 15 ~platform,:characterized-in that the c~port further .~comprisesian integral guard portion space~ forwardly of the blade,edge,j,and-.mounting means.on the ~u~G ~'by ,,. ,,whi$h..thefintegral,~guard and blade are mounted in use in , .~,. .a razorihead,-for rotation.together.about an axis .,~,20 -par.allel~with and close toLthe.blade edge.
.The invention.,-also.includes''a safety razor including a head;frame.in which:.at.leastione sucX blade unit is mounted for;,rotation-.about'the said axis.
-f;' ~.Preferably,.the (or..each) unit is also mounted : 25 ~for,;movement relative to~the-frame,under--forces ,~ ~., enco~nte,r,ed.i,during~shaving~ J ~qi~ inct the:~action of a resilient~restoring~force~ in directions'transve'rse ""
.. . :
WO91/14~6 PCT/US91/01926 2e~ 2 - ~"
(i.e. substantially perpendicular) to a notional plane containing the blade edge and a skin engaging surface of the guard portion.
A blade unit and safety razor head frame in accordance with the invention and some modifications ~ thereof, will now be described, by way of example, with reference to the accompanying drawings, in which: ', Figs. 1 and 2 are perspective views of an end portion of the head frame and of~a blade unit, respectively;
Fig. 3 is a cross-section taken at the sectioning line in Figure 1, showing the blade units and a cap 'er in the normal positions of rest;
Fig. 4 corresponds with Fig. 3, and shows the parts in different relative positions;
Fig. 5 is a diagrammatic cross-section illustrating different positions of the cap and blade units in use;
~ Fig. 6 is an exploded pe~i7~e.-i-ive view of a modified razor head frame and blade units; and . Fig...7.is a cross-section of the head frame of ,~,." Fig.,6, correspQn~ing with-Fig. 5.~
--,. ... . :...: The razor head.shown in Figs. l'to,4 comprises ., a metal or - l~e~.-plastics head frame 1 having an :,25~, elongate-base 2.and,:upst~n~ing:end walls 3 at opposite . , ends thereof.~:Only onei.end of the frame:-is shown in .these Figs...tbie.oppositelend~being a mirror image.
..,-,~..,i IThe~;head frame ~ .poL~s"alcap member 4,'two ~ blade.units 5,iand,~three:pairs-.of ? cantilever wire springs , ~ 30 ~~;, 6 ~ I whose~inner~ends.(not~shown)~are secured'to the .,?,;rmedial portion.of.i-the~elongate base.;~
-,. ." . ..: .i Each blade.unit 5 consists of a narrow blade -7,~having:ai~sharpened.cutting edge~7A','-and:a~blade , Su~G~ ~ ~ 8 formed~asian-L-cih~rp~ metal--stâmping to .'.35 'i' ~eprovide a-platform 9 and:a-guard portion-~providing a curvéd skin engaging guard surface 11 and a depen~ing leg 12. The ~iiuy~ol~ has a slot 13 over most of its - . ~ ': . '~.:
' ." .
- ~ .
, WO91/14~6 ' ~ PCT/US91/01926 ~; . .
1 ',,',, ,~ .
length to form a space between the platform g and the guard portion and the blade 7 is securely attached to the platform with.its edge 7A projecting forwardly into that space, forwardly of the platform.
At its ends, the support 8 is formed with upwardly offset, projecting ears 14 which are abuttingly engaged from below by upst~n~ i ng end portions 6A of the wire springs 6.
The cap member 4 consists of a ch-~~nnel shaped ~ 10 support 16 in which a cap moulding 17 is secured.
The cap - ber and blade units are captured at their ends in recesses formed in the.end walls 3 of the head frame. More.specifically, the ears 14 of the blade su~olLs engage in narrow vertical slots 18 which also receive the vertical end portions 6A.of the respective . wire springs. Alongside.each slot.l8 is a shallower, ~ wider recess.l9 whose forward face.21 acts as a stop for .
the adjacent end of the respective leg 12.
Thus, each blade unit is guided for vertical ~ - L in the head.frame by-engagement of-its ears 14 . - in the slots 18. The springs 6 are pre-stressed so that in the.normal,trest position,.the blade units are held .!. .U: by the.springs in.-their:-outermost:positions, as shown in Fig...3...The spring ends 6A:are:guided and constrained -~ 25~ for.:vertical movement:.in~their.les~e~ive'slots 18 and are pointed at their upper~.ends, where~they engage the .ears;14 so as~to.:provide fulcrums;-permitting rotational movement of-.the~units:about.axes~parallel.with and close ; .to.-.the~.cutti..~ edyas.of~the. es~e~ive-.hl~s. As best -illustrated~.in.Fig;~4, this rotational~:m~ -nt is Ji-.; E~ limited~by.. :engagement~of the~ends of the-legs 12 with .the.rear...faces..~ofsslots 18:and the forward'~faces 21 of . rec~s~ses 19, respectively.~The.~cap~member 4~ which is set beh;n~.the blade units~~in;the-shaving direction, is .~ nA..~35~:, constrained and,guided-for..vertical'movement~onlyg:
s parallel with~the~correspon~n~ muie -nt'.~of the blade units. The cap:mémber:-is-also urged:to;its outermost ., .
WO91/14~6 ~ PCT/US91/01926 9 ~7,J ~.
position by its respective wire springs 6, as shown in Fig. 3.
- Fig. 4.shows the moving parts in their inner-most positions, in which their springs 6 are "bottomed"
against the base 2 of.the frame.
In use of the razor, the cap and blade units are able to conform closely to the differing contours of the skin areas being shaved by virtue of their being able to move, independently of each other and against ~ lO the resilient restoring forces of their springs, according;to the forces which they experience. This indepen~en~-e of motion is known in itself but, significantly, the blade units are also able to pivot freely in order.to permit each unit to maintain close contact.with the skin at both its cutting edge 7A and - .its skin engaging guard surface ll,-thus preserving its optimum attitude in spite of variations in the contours of the skin surface. This is due to the fact that the pivotal axis of each unit is parallel with and just ahead of the sharpened edge of the blade.
. In Fig. 5, the.variations in skin contours are i.~.;;-~; exaggerated to..illustrate the:way.in:which the moving - . -. parts of.:the.razor accommodate t1n~ ations in the skin . - -surface.and in.particular how the~attitudes.~of the blade .-. . 25 -units are adjusted automatically to:-maintain the desired .~ ~. contact.with the-::skin.... . . ~
The.translational.movement of~the units is .described above as~being.i.nvertical n. iThis,nof course, i .assumes a ~pec~fic attitude-of-the razor head. The 30 ~~sense.~of~the.~requisite movement,.:-regardless..of the' z~-; attitude of the~razor;~is;*ransverse to~a.;notional plane n~ cont~ the blade:edge.iand the.~skin engaging surface ~ of the guard~portion.. ~ a ..; ti1o..i:. ssLn ~r~v~Because~of~the self-guarding.:nature of the 35l- blade-units,_it~will~generally-be 1lnnpcpsci~ry to provide a separated guard memberj.but.-if.-one is~provided, it can be mounted for translational-: v~ ,rnt, with~a spring - . . _ _ .
.
' ~
.
wosl/l4~6 PCT/US91/01926 ~'- 207~
suspension, in the same ~nner as the cap member.
The razor could of course have a single blade unit or three or more if desired, but two units are presently regarded as optimal. ...
. .
,,.~ Figs. 6 and 7 illustrate a,modified form of blade unit,,and head frame which are generally similar to . .
the above described ~ ho~; ment but.with some structural modifications,.principally as described below. Parts of ,the modified embodiment are given.reference numerals . .. . .... . .. . . . . .
10, increased by 100 compared with the numerals used for corresponding parts in.the first embodiment.
. , , The,blade units 105 are virtually identical ... .......
,,, with those first described, save that the ear~ 114 are in the same plane as.the guard portion rather than being ,,upwardly offset.; As a result the pivotal axis 'A' of the unit is set lower than in the first.embodiment.
., . . The moulded head frame lOl is of a different , construction, being,provided in known manner with .. . . .. . ............ .. . . . .
depen~;ng legs.22 by which the frame is adapted for ,, . ,~ . .. .. .. .. . .
releasable,mounting on..the.upper end of a.razor handle with limited freedom to;pivot, relative,to the handle, 3~ about a51Ongit~ nAl .axis~ 7,~
The.upper...surface,of.,the-base.102-is formed with.,an;upstAn~ng~pip 102A destined.,,to-provide,an inte-gral.rivet..~for..securing a metallic.spring member com-~3~ ; .prising a..rectan~ular ~ l portion,106A having inte-: gral spring,,fingers~106~exte~n~1Ongit~ nAl1y:away~
, and also upwardly from the plane of the portion.,106A.
~ 3 ~ The re~ar~nwall~of,~the",frame s~101; is formed with ~ 30 ~.a chAnn~l to receive the~caprmo~ ng 117 in.a.~fixed ~,r,qr,Position-~ d ~r~ /'tJ l ~lrl~,'b ~ r,~~~
n~the.end,walls.103,.of, the fr,a,me,.,-the,,slots ,118Jrland rec~sses, ll9.iare completelx~open from above and sep~arate.clips 123.are.,provided,for~ret~in~ the.plade ~35,_ ~units L,by, their~ears,-ll4,J,to the frame..~ ,,*~s, ~: The function and operation of the blade,units is as described above.
:: .
Claims (6)
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A razor head comprising:
a razor head frame including a unitary molding having an elongated base with upstanding walls at opposite ends thereof, the inner faces of said walls being formed with slots;
at least one blade unit supported in said frame and having:
a blade having a sharpened cutting edge;
a blade support having a platform to which said blade is attached with its edge projecting forwardly of the platform;
an integral guard portion having a skin engaging guard surface spaced forwardly of said blade edge; and mounting means on said blade support by which the integral guard portion and blade are mounted in said frame for rotation together about an axis parallel with and close to said blade edge, said mounting means being received in said slots for substantially vertical movement relative to said frame;
said slots being formed substantially in directions transverse to a notional plane containing said blade edge and said skin engaging surface of said guard portion;
spring means engaging opposite ends of said blade support, said blade support ends being displaceable relative to said frame;
said spring means bearing on said elongated base and bearing upwardly at its ends on said mounting means to provide a resilient restoring force; and the inner faces of said walls also being formed with forward and rear abutment faces for engagement by portions of said blade support to limit rotation of said support;
wherein said blade unit is substantially vertically movable relative to said frame under forces encountered during shaving, against the resilient restoring force, in directions transverse to the notional plane containing said blade edge and said skin engaging surface of said guard portion.
a razor head frame including a unitary molding having an elongated base with upstanding walls at opposite ends thereof, the inner faces of said walls being formed with slots;
at least one blade unit supported in said frame and having:
a blade having a sharpened cutting edge;
a blade support having a platform to which said blade is attached with its edge projecting forwardly of the platform;
an integral guard portion having a skin engaging guard surface spaced forwardly of said blade edge; and mounting means on said blade support by which the integral guard portion and blade are mounted in said frame for rotation together about an axis parallel with and close to said blade edge, said mounting means being received in said slots for substantially vertical movement relative to said frame;
said slots being formed substantially in directions transverse to a notional plane containing said blade edge and said skin engaging surface of said guard portion;
spring means engaging opposite ends of said blade support, said blade support ends being displaceable relative to said frame;
said spring means bearing on said elongated base and bearing upwardly at its ends on said mounting means to provide a resilient restoring force; and the inner faces of said walls also being formed with forward and rear abutment faces for engagement by portions of said blade support to limit rotation of said support;
wherein said blade unit is substantially vertically movable relative to said frame under forces encountered during shaving, against the resilient restoring force, in directions transverse to the notional plane containing said blade edge and said skin engaging surface of said guard portion.
2. A razor head comprising:
a frame having an elongated base and upstanding side walls disposed on opposite ends of said elongated base, each of said side walls having recesses in their oppositely facing inner surfaces;
at least one blade unit supported in said frame and having:
a blade with a sharpened cutting edge extending generally parallel to the length of said frame base;
a blade support having a platform for holding said blade and an integral guard portion having a skin engaging guard surface spaced forwardly of said blade edge; and mounting means on said blade support by which the blade and guard portion are mounted in said recesses for rotation together about an axis parallel and close to the said blade edge and for substantially vertical movement within said recesses;
and further including springs disposed on said frame and having a first portion in contact with the said frame and a second portion in contact with said blade unit to bias said blade unit to move relative to the frame in a direction generally perpendicular to the skin engaging surface of the guard portion.
a frame having an elongated base and upstanding side walls disposed on opposite ends of said elongated base, each of said side walls having recesses in their oppositely facing inner surfaces;
at least one blade unit supported in said frame and having:
a blade with a sharpened cutting edge extending generally parallel to the length of said frame base;
a blade support having a platform for holding said blade and an integral guard portion having a skin engaging guard surface spaced forwardly of said blade edge; and mounting means on said blade support by which the blade and guard portion are mounted in said recesses for rotation together about an axis parallel and close to the said blade edge and for substantially vertical movement within said recesses;
and further including springs disposed on said frame and having a first portion in contact with the said frame and a second portion in contact with said blade unit to bias said blade unit to move relative to the frame in a direction generally perpendicular to the skin engaging surface of the guard portion.
3. A razor head according to claim 2, wherein the said blade support is of generally L-shaped cross-section, having one leg constituting the said platform and a second, depending leg spaced forwardly of the blade edge, the said guard surface being formed by a transitional portion between the legs of the support.
4. A razor head according to claim 2, wherein the said blade support is of generally L-shaped cross-section, having one leg constituting the platform and a second, depending leg spaced from the blade edge for limited rotation about the said axis.
5. A razor head according to claim 2, wherein the support is formed at its opposite ends with a pair of projections, extending beyond respective ends of the said platform and which constitute the said mounting means.
6. A razor head according to claim 2, wherein the said blade support is formed as a unitary metal stamping.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9006782.8 | 1990-03-27 | ||
| GB909006782A GB9006782D0 (en) | 1990-03-27 | 1990-03-27 | Safety razors and blade units therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2076534A1 CA2076534A1 (en) | 1991-09-28 |
| CA2076534C true CA2076534C (en) | 1998-10-06 |
Family
ID=10673307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002076534A Expired - Fee Related CA2076534C (en) | 1990-03-27 | 1991-03-22 | Safety razors and blade units therefor |
Country Status (19)
| Country | Link |
|---|---|
| EP (1) | EP0522071B1 (en) |
| JP (1) | JP3085974B2 (en) |
| KR (1) | KR0174756B1 (en) |
| CN (1) | CN1035163C (en) |
| AT (1) | ATE143624T1 (en) |
| AU (1) | AU649665B2 (en) |
| BR (1) | BR9106269A (en) |
| CA (1) | CA2076534C (en) |
| CZ (1) | CZ283054B6 (en) |
| DE (1) | DE69122500T2 (en) |
| DK (1) | DK0522071T3 (en) |
| ES (1) | ES2092564T3 (en) |
| GB (1) | GB9006782D0 (en) |
| GR (1) | GR3021275T3 (en) |
| PL (1) | PL166706B1 (en) |
| RU (1) | RU2091211C1 (en) |
| TR (1) | TR27611A (en) |
| UA (1) | UA25899C2 (en) |
| WO (1) | WO1991014546A1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3253960B2 (en) * | 1991-07-18 | 2002-02-04 | ワーナー−ランバート・カンパニー | Razor head with variable shaving shape |
| US5341571A (en) * | 1993-04-16 | 1994-08-30 | American Safety Razor Company | Movable blade shaving cartridge or the like |
| GB9505917D0 (en) * | 1995-03-23 | 1995-05-10 | Gillette Co | Safety razors |
| US5689883A (en) * | 1995-05-08 | 1997-11-25 | Warner-Lambert Company | Shaving implement |
| AU2129597A (en) * | 1996-03-27 | 1997-10-17 | Warner-Lambert Company | Shaving system with uniform shaving forces |
| US6009624A (en) * | 1997-09-30 | 2000-01-04 | The Gillette Company | Razor cartridge with movable blades |
| JP4977374B2 (en) | 2006-02-14 | 2012-07-18 | 株式会社貝印刃物開発センター | razor |
| JP4950507B2 (en) | 2006-02-14 | 2012-06-13 | 株式会社貝印刃物開発センター | razor |
| JP4950506B2 (en) | 2006-02-14 | 2012-06-13 | 株式会社貝印刃物開発センター | razor |
| US8008812B2 (en) | 2006-07-14 | 2011-08-30 | Aurora Office Equipment Co., Ltd. | Paper shredder control system responsive to touch-sensitive element |
| CN201239643Y (en) | 2008-08-06 | 2009-05-20 | 上海震旦办公设备有限公司 | Full automatic paper crusher without selecting paper |
| CA2738795A1 (en) * | 2008-09-29 | 2010-04-01 | The Gillette Company | Razor cartridges with perforated blade assemblies |
| US9156174B2 (en) | 2008-12-19 | 2015-10-13 | Bic-Violex S.A. | Razor cartridge and mechanical razor comprising such a cartridge |
| CN101543800A (en) | 2009-05-07 | 2009-09-30 | 上海震旦办公设备有限公司 | Paper jamming prevention protective device of paper shredder |
| PL2454056T3 (en) * | 2009-07-15 | 2014-08-29 | Eveready Battery Inc | Razor blade technology |
| EP3072646B1 (en) * | 2015-03-25 | 2020-06-17 | The Gillette Company LLC | Shaving razor cartridge |
| CN106098254B (en) * | 2016-07-14 | 2017-08-29 | 广州市明创线缆有限公司 | A kind of manual wringing equipment of cable and its application method |
| CN109514230B (en) * | 2018-12-29 | 2023-06-20 | 温州美葆科技技术有限公司 | Full-automatic assembly equipment for manual shaver and control method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1140321A (en) * | 1979-05-25 | 1983-02-01 | John F. Francis | Safety razor heads |
| US4337575A (en) * | 1980-08-07 | 1982-07-06 | The Gillette Company | Razor blade assembly |
| GB2131337B (en) * | 1982-12-07 | 1985-10-30 | Gillette Co | Safety razors |
| US4586255A (en) * | 1984-10-15 | 1986-05-06 | The Gillette Company | Razor blade assembly |
| US4709477A (en) * | 1986-09-02 | 1987-12-01 | Warner-Lambert Company | Blade assembly featuring variable span |
| US4932122A (en) * | 1987-12-21 | 1990-06-12 | The Gillette Company | Safety razor blade assembly |
-
1990
- 1990-03-27 GB GB909006782A patent/GB9006782D0/en active Pending
-
1991
- 1991-03-22 DE DE69122500T patent/DE69122500T2/en not_active Expired - Lifetime
- 1991-03-22 KR KR1019920702297A patent/KR0174756B1/en not_active IP Right Cessation
- 1991-03-22 ES ES91907778T patent/ES2092564T3/en not_active Expired - Lifetime
- 1991-03-22 CA CA002076534A patent/CA2076534C/en not_active Expired - Fee Related
- 1991-03-22 AU AU76532/91A patent/AU649665B2/en not_active Ceased
- 1991-03-22 DK DK91907778.4T patent/DK0522071T3/en active
- 1991-03-22 JP JP03507315A patent/JP3085974B2/en not_active Expired - Fee Related
- 1991-03-22 EP EP91907778A patent/EP0522071B1/en not_active Expired - Lifetime
- 1991-03-22 WO PCT/US1991/001926 patent/WO1991014546A1/en active IP Right Grant
- 1991-03-22 BR BR919106269A patent/BR9106269A/en not_active IP Right Cessation
- 1991-03-22 UA UA93004086A patent/UA25899C2/en unknown
- 1991-03-22 AT AT91907778T patent/ATE143624T1/en not_active IP Right Cessation
- 1991-03-22 RU SU915053071A patent/RU2091211C1/en active
- 1991-03-25 TR TR00294/91A patent/TR27611A/en unknown
- 1991-03-26 CN CN91102479A patent/CN1035163C/en not_active Expired - Lifetime
- 1991-03-26 PL PL91289588A patent/PL166706B1/en unknown
- 1991-03-27 CZ CS91834A patent/CZ283054B6/en unknown
-
1996
- 1996-10-07 GR GR960402631T patent/GR3021275T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP3085974B2 (en) | 2000-09-11 |
| DK0522071T3 (en) | 1997-02-17 |
| GB9006782D0 (en) | 1990-05-23 |
| ES2092564T3 (en) | 1996-12-01 |
| RU2091211C1 (en) | 1997-09-27 |
| DE69122500D1 (en) | 1996-11-07 |
| CN1057807A (en) | 1992-01-15 |
| TR27611A (en) | 1995-06-13 |
| CS9100834A2 (en) | 1991-11-12 |
| BR9106269A (en) | 1993-04-13 |
| AU7653291A (en) | 1991-10-21 |
| KR0174756B1 (en) | 1999-02-18 |
| EP0522071A1 (en) | 1993-01-13 |
| CA2076534A1 (en) | 1991-09-28 |
| EP0522071A4 (en) | 1993-05-19 |
| UA25899C2 (en) | 1999-02-26 |
| EP0522071B1 (en) | 1996-10-02 |
| KR930700267A (en) | 1993-03-13 |
| JPH05505746A (en) | 1993-08-26 |
| CN1035163C (en) | 1997-06-18 |
| CZ283054B6 (en) | 1997-12-17 |
| AU649665B2 (en) | 1994-06-02 |
| DE69122500T2 (en) | 1997-04-03 |
| ATE143624T1 (en) | 1996-10-15 |
| WO1991014546A1 (en) | 1991-10-03 |
| GR3021275T3 (en) | 1997-01-31 |
| PL166706B1 (en) | 1995-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |