CA1150040A - Shaving apparatus - Google Patents
Shaving apparatusInfo
- Publication number
- CA1150040A CA1150040A CA000341170A CA341170A CA1150040A CA 1150040 A CA1150040 A CA 1150040A CA 000341170 A CA000341170 A CA 000341170A CA 341170 A CA341170 A CA 341170A CA 1150040 A CA1150040 A CA 1150040A
- Authority
- CA
- Canada
- Prior art keywords
- cutter
- hair
- lead
- cutting unit
- shear plate
- 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
- 238000005520 cutting process Methods 0.000 claims abstract description 34
- 210000004209 hair Anatomy 0.000 claims abstract description 28
- FSVJFNAIGNNGKK-UHFFFAOYSA-N 2-[cyclohexyl(oxo)methyl]-3,6,7,11b-tetrahydro-1H-pyrazino[2,1-a]isoquinolin-4-one Chemical compound C1C(C2=CC=CC=C2CC2)N2C(=O)CN1C(=O)C1CCCCC1 FSVJFNAIGNNGKK-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 2
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
- B26B19/141—Details of inner cutters having their axes of rotation perpendicular to the cutting surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
- B26B19/145—Cutters being movable in the cutting head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
- B26B19/42—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards providing for straightening the hair to be cut, e.g. by means of bristles; providing for tensioning the skin, e.g. by means of rollers, ledges
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
- Knives (AREA)
Abstract
8.11.79 1 PHN.9308 ABSTRACT
"Shaving apparatus"
The invention relates to a shaving apparatus having a drivable cutting unit with cutters, each cutter being equipped with a lead cutter having a contact edge at the ends, which lead cutter is situated foremost in the direction of driving and is movable relative to the cutter. The lead cutters serve to slightly pull up the hairs before they are severed by the associated cutter.
However, the distance through which the hairs can be pulled up is limited by the shape and dimensions of the lead cutter. In order to overcome this limitation the lead cutter is provided with a projecting portion at the end, which portion is provided with the contact edge.
"Shaving apparatus"
The invention relates to a shaving apparatus having a drivable cutting unit with cutters, each cutter being equipped with a lead cutter having a contact edge at the ends, which lead cutter is situated foremost in the direction of driving and is movable relative to the cutter. The lead cutters serve to slightly pull up the hairs before they are severed by the associated cutter.
However, the distance through which the hairs can be pulled up is limited by the shape and dimensions of the lead cutter. In order to overcome this limitation the lead cutter is provided with a projecting portion at the end, which portion is provided with the contact edge.
Description
~5~1~4~
The invention relates to a shaving apparatus having a drivable cutting unit with cutters, each cutter being equipped with a lead cut-ter having a contact edge at the end, which lead cutter is situated foremost in the direction of driving and is movable relative to the cutter.
Such a shaving apparatus is for example known from Canadian Patent No. 1,017,556. The lead cutters serve to slightly pull up the hairs before the hairs are cut by the associated cutters, which enables a better shaping result to be obtained. The distance through which the hairs can be pulled up is limited by the properties of the hairs and the skin and in particular by the shape and dimensions of the lead cutter.
It is the object of the invention to eliminate this limitation at least partly.
According to the invention there is provided a cutting unit for a dry-shaving apparatus of the kind described, comprising a plurality of cut-ters and a plurality of hair-pulling elements each disposed in front of an associated one of the cutters with respect to the direction of the cutting movement thereof, each hair-pulling element beillg arranged for movemen-t with the associated cutter relative to the shear plate and having sliding contact with a surface of the associated cutter for movement relative to the cutter in directions away from and towards the shear plate when the cutting unit is in operation in a shaving apparatus, and each hair-pulling element having an edge which, as the element moves over a hair-entry aperture of the shear plate in front of the associated cutter when the cutting unit is in opera-tion, contacts hairs protruding through that aperture and, by movement of the hair-pulling element away from the shear plate under the reaction force from said hairs, pulls these hairs further through the aperture, wherein each hair-pulling element has the form of a blade which is locally thickened to form a portion which projects forwardly from the element with respect to the direction of the cutting movement of the associated cutter and on which said edge of -the element is formed.
The invention will now be explained by means of a description of an embodiment shown in the Figures.
. ` - 1. -,. . .
Figure 1 is an elevation of a shaving apparatus having three shear plates, Figure 2 shows the shaving apparatus of Figure 1 in side view and partly in a cross-section taken on the line II-II in Figure 1, Figure 3 is a perspective view of the cutting unit and a part of the shear plate, Figures 4 and 5 illustrate the operation of :
~- - la -4(3 .. . . . . . . ... ... .......... . . .. . .... . . . .. ... .... .. . ... .......
- 8.11.79 2 PHN.930~
, . . .
- ~--the lead cutters. ^~~~
The shaving apparatus shown in Figures 1 and
The invention relates to a shaving apparatus having a drivable cutting unit with cutters, each cutter being equipped with a lead cut-ter having a contact edge at the end, which lead cutter is situated foremost in the direction of driving and is movable relative to the cutter.
Such a shaving apparatus is for example known from Canadian Patent No. 1,017,556. The lead cutters serve to slightly pull up the hairs before the hairs are cut by the associated cutters, which enables a better shaping result to be obtained. The distance through which the hairs can be pulled up is limited by the properties of the hairs and the skin and in particular by the shape and dimensions of the lead cutter.
It is the object of the invention to eliminate this limitation at least partly.
According to the invention there is provided a cutting unit for a dry-shaving apparatus of the kind described, comprising a plurality of cut-ters and a plurality of hair-pulling elements each disposed in front of an associated one of the cutters with respect to the direction of the cutting movement thereof, each hair-pulling element beillg arranged for movemen-t with the associated cutter relative to the shear plate and having sliding contact with a surface of the associated cutter for movement relative to the cutter in directions away from and towards the shear plate when the cutting unit is in operation in a shaving apparatus, and each hair-pulling element having an edge which, as the element moves over a hair-entry aperture of the shear plate in front of the associated cutter when the cutting unit is in opera-tion, contacts hairs protruding through that aperture and, by movement of the hair-pulling element away from the shear plate under the reaction force from said hairs, pulls these hairs further through the aperture, wherein each hair-pulling element has the form of a blade which is locally thickened to form a portion which projects forwardly from the element with respect to the direction of the cutting movement of the associated cutter and on which said edge of -the element is formed.
The invention will now be explained by means of a description of an embodiment shown in the Figures.
. ` - 1. -,. . .
Figure 1 is an elevation of a shaving apparatus having three shear plates, Figure 2 shows the shaving apparatus of Figure 1 in side view and partly in a cross-section taken on the line II-II in Figure 1, Figure 3 is a perspective view of the cutting unit and a part of the shear plate, Figures 4 and 5 illustrate the operation of :
~- - la -4(3 .. . . . . . . ... ... .......... . . .. . .... . . . .. ... .... .. . ... .......
- 8.11.79 2 PHN.930~
, . . .
- ~--the lead cutters. ^~~~
The shaving apparatus shown in Figures 1 and
2 comprises a housing 1, on which a part takes the form of a shear plate holder 2 for three shear plates 3~ The sh0ar plates 3 are formed with hair entry apertures 4.
As is shown in the partial cross-section of Fig. 2 a cutting unit 5 is situated on the inner side of a shear plate 3. This cutting unit 5, which for -the sake of clarity is shown only schematically in Fig. 2, is shown in perspective and on an enlarged scale in Fig. 3-The cutting unit 5 is coupled to the electricmotor 10 by means of the hollow spindle 6 (Fig. 2), -the gear wheels 7 and 8~ and the shaft 9, so that the cutting unit is rotatable relative to t;he associated shear plate 3.
The gear wheel 7 is rota-tably journalled on a pin 11, which is fixed in a mo-mting pla-te 12. The gear wheel 7 is formed with a cavi-ty 13, which is closed by a cover plate 1~. This cavity accommodates the flange 15 at the end of the hollow spindle 6. By giving the flange 15 a ` ~ non-circular, for example, square shape and by accordingl~
shaping the cavity 13 a coupling is obtained ~or trans-mitting the rotary movement of the gear wheel 7 to the spindle 6, the spindle being pivotable in all directions.
~25 The spring 16, which for the greater part is disposed in the hollow spindle 6 and which is compressed between the hollow spindle 6 and the gear wheel 7, exer-ts a force on the spindle 6 in the direction of the cutting unit 5.
As the cylindrical portion 17 of the spin~le 6 bears against the cutting unit 5, this force is transmitted to the cutting unit and via the cutting uni-t to the shear plate 3, so that the shear plate is urged against the shear plate~holder 2 with the rim 1~. Under the influence of external forces, as may occur during use o~ the shaving apparatus, the shear plate 3, together with the cutting unit 5 and the spindle 6, can be pressed inwards against the action of the spring 16.
.. . ..............
. . ~ . . . . .. . . ... . ..... ... .. . . .. ..... _ . _.. .. .. . _ .. . . ... . .. _. _ _ .. ... .. .
. _ ...
4() .. . . . . .. . ....... ... ...
8.11.79 3 P~N.9308 - The coupling for transmitting the rotary move--~~~;
ment from the spindle 6 to the cutting unit 5 is obtained by providing -the spindle 6 with an end portion 19 of substantially rectangular cross-section. This end portion 19 engages with a corresponding coupling aperture 20 of the cutting unit 5.
The coupling to the electric motor 10 described in the foregoing is identical for the three cutting uni-ts of the apparatus of Figures 1 and 2, the ~three gear wheels 7 meshing with a single centrally disposed gear wheel 8 on the motor shaf-t 9.
The cut-ting unit 5 (Fig. 3) comprises a cutting member 21 which is mainly constituted by a central body 22 which at its periphery is formed with cutters 23, ~hich are secured to the central body 22 by means of the arms 2L~.
The central body 22 is formed with the coupling aperture 20. Each cutter 23 is provided with a lead cutter 25. The lead cutters 25 are combi~ed to a lead cutter unit 26, ~hich comprises a cen-tral portion 27 to which the lead cutters 25 are connected by means of the arms 28.
In the assembled condition of the cutting unit the central portion 22 of the cutting member 21 and the central portion 27 of the lead cutter unit 27 are secured to each other, for example by spot-welding.
. 25 As already described with reference to Figures 1 and 2, the cutting unit 5 is subject to spring pressure so that the ends 29 of the cutters 23 and the ends 30 of the lead cut'ters are positioned against the shear plate 3 with hair entry apertures 4. Owing to the elastic proper-ties of the arms 28 the lead cutters 25 are movable relative to the associated cutters 23, which movement is direc-ted substantially transversely to the shear plate 3.
The ends 30 of the lead cutters 25 have projecting portions 31, which are provided wi-th contact edges 32.
Figures L~ and 5 illustrate the opera-tion of the cutting unit 5 and schematically show a side view of .... .. . .. . .. .. . . .. .. .. .. .. . . .... . . .. .. .. ..
.
o ~.11.79 4 PHN.9308 a part of the cutting unit and a part of the shear plate in cross-section, also showing a skin portion 33 with a '' hair 34. The hair 34 is caught in a hair entry aperture 4 and as a result o* the rotary movement of the cutting unit 5 relative to the shear plate 3 it will soon contact the contact edge 32 of a lead cutter 25 at the location A
(Fig. 4), -The contact edge 32 is a sharp edge, which will slightly penetrate the hair 34 without severing it. The ,; 10 reaction force which is exerted on -the lead cut-ter 25 by the hair 3L~ has a direction opposite to the direction of movemant P. This force should be compensated ~`or by the component Nl of the norlnal forc0 N which is exerted on the lead cutter 25 by the guide wall 35 of the cutter 23. For the sake o~ simp:Licity the slight frictional ~orces between cutter 23 and lead cutter 25 have been ignored.
The component N2 ~` the normal force N will cause the lead cutter 25 to slide along the guide wall 35. Tha angle C~ between the guide wall 35 and the wall 36 o~
the cutter 23 which engages with the shear plate 3 will have to be smaller than 9O.
As a result o~, inter ali.a, -the natural elas-ticity o~ the skin, the hair 3L~ will be moved along by the lead cutter 25 until the leading edge 37 of the cutter 25 .23 has reached the hair at the location B (Fig. 5). Conse-~uently, the hair 34 is pulled up ~rom the skin 3 through a distance from A to B before the hair is severed at B, by cooperation of the shear plate 3 and the cutter 23.
Without lead cutter 25, the hair 34 would have been severed a-t the location A, so that the beard stu'bble left in the skin is sho,rter when a shaving apparatus having a cutting unit with lead cutter is used than when such an apparatus without lead cutters is used.
For comparison a lead cutter 25 9 wi-thout projecting portion is also shown in Fig. 5 by dashed lines.
This lead cutter 25 9, which contacts the hair 34 a-t the location C, could pull up the hair through a distance .. . . . . . .... ... ... ..... . .....
~s~o ;:3 8.11.79 5 PHN.93O8 .
--- corresponding to the distance BC only before the hair ---would be severed. Thus, when the projecting portion 31 is used a distance AC is gained when pulling up the hair and the action of the lead cutter is improved.
The projecting portion 31 means that the end 3O of the lead cutter 25 becomes thicker and in comparison with a lead cutter unit which is thicker throughout it has the advantage that the increase in mass o~ the lead cutter unit is substantially smaller and the stiffness of the elastic arms 28 is not increased.
:`
.
As is shown in the partial cross-section of Fig. 2 a cutting unit 5 is situated on the inner side of a shear plate 3. This cutting unit 5, which for -the sake of clarity is shown only schematically in Fig. 2, is shown in perspective and on an enlarged scale in Fig. 3-The cutting unit 5 is coupled to the electricmotor 10 by means of the hollow spindle 6 (Fig. 2), -the gear wheels 7 and 8~ and the shaft 9, so that the cutting unit is rotatable relative to t;he associated shear plate 3.
The gear wheel 7 is rota-tably journalled on a pin 11, which is fixed in a mo-mting pla-te 12. The gear wheel 7 is formed with a cavi-ty 13, which is closed by a cover plate 1~. This cavity accommodates the flange 15 at the end of the hollow spindle 6. By giving the flange 15 a ` ~ non-circular, for example, square shape and by accordingl~
shaping the cavity 13 a coupling is obtained ~or trans-mitting the rotary movement of the gear wheel 7 to the spindle 6, the spindle being pivotable in all directions.
~25 The spring 16, which for the greater part is disposed in the hollow spindle 6 and which is compressed between the hollow spindle 6 and the gear wheel 7, exer-ts a force on the spindle 6 in the direction of the cutting unit 5.
As the cylindrical portion 17 of the spin~le 6 bears against the cutting unit 5, this force is transmitted to the cutting unit and via the cutting uni-t to the shear plate 3, so that the shear plate is urged against the shear plate~holder 2 with the rim 1~. Under the influence of external forces, as may occur during use o~ the shaving apparatus, the shear plate 3, together with the cutting unit 5 and the spindle 6, can be pressed inwards against the action of the spring 16.
.. . ..............
. . ~ . . . . .. . . ... . ..... ... .. . . .. ..... _ . _.. .. .. . _ .. . . ... . .. _. _ _ .. ... .. .
. _ ...
4() .. . . . . .. . ....... ... ...
8.11.79 3 P~N.9308 - The coupling for transmitting the rotary move--~~~;
ment from the spindle 6 to the cutting unit 5 is obtained by providing -the spindle 6 with an end portion 19 of substantially rectangular cross-section. This end portion 19 engages with a corresponding coupling aperture 20 of the cutting unit 5.
The coupling to the electric motor 10 described in the foregoing is identical for the three cutting uni-ts of the apparatus of Figures 1 and 2, the ~three gear wheels 7 meshing with a single centrally disposed gear wheel 8 on the motor shaf-t 9.
The cut-ting unit 5 (Fig. 3) comprises a cutting member 21 which is mainly constituted by a central body 22 which at its periphery is formed with cutters 23, ~hich are secured to the central body 22 by means of the arms 2L~.
The central body 22 is formed with the coupling aperture 20. Each cutter 23 is provided with a lead cutter 25. The lead cutters 25 are combi~ed to a lead cutter unit 26, ~hich comprises a cen-tral portion 27 to which the lead cutters 25 are connected by means of the arms 28.
In the assembled condition of the cutting unit the central portion 22 of the cutting member 21 and the central portion 27 of the lead cutter unit 27 are secured to each other, for example by spot-welding.
. 25 As already described with reference to Figures 1 and 2, the cutting unit 5 is subject to spring pressure so that the ends 29 of the cutters 23 and the ends 30 of the lead cut'ters are positioned against the shear plate 3 with hair entry apertures 4. Owing to the elastic proper-ties of the arms 28 the lead cutters 25 are movable relative to the associated cutters 23, which movement is direc-ted substantially transversely to the shear plate 3.
The ends 30 of the lead cutters 25 have projecting portions 31, which are provided wi-th contact edges 32.
Figures L~ and 5 illustrate the opera-tion of the cutting unit 5 and schematically show a side view of .... .. . .. . .. .. . . .. .. .. .. .. . . .... . . .. .. .. ..
.
o ~.11.79 4 PHN.9308 a part of the cutting unit and a part of the shear plate in cross-section, also showing a skin portion 33 with a '' hair 34. The hair 34 is caught in a hair entry aperture 4 and as a result o* the rotary movement of the cutting unit 5 relative to the shear plate 3 it will soon contact the contact edge 32 of a lead cutter 25 at the location A
(Fig. 4), -The contact edge 32 is a sharp edge, which will slightly penetrate the hair 34 without severing it. The ,; 10 reaction force which is exerted on -the lead cut-ter 25 by the hair 3L~ has a direction opposite to the direction of movemant P. This force should be compensated ~`or by the component Nl of the norlnal forc0 N which is exerted on the lead cutter 25 by the guide wall 35 of the cutter 23. For the sake o~ simp:Licity the slight frictional ~orces between cutter 23 and lead cutter 25 have been ignored.
The component N2 ~` the normal force N will cause the lead cutter 25 to slide along the guide wall 35. Tha angle C~ between the guide wall 35 and the wall 36 o~
the cutter 23 which engages with the shear plate 3 will have to be smaller than 9O.
As a result o~, inter ali.a, -the natural elas-ticity o~ the skin, the hair 3L~ will be moved along by the lead cutter 25 until the leading edge 37 of the cutter 25 .23 has reached the hair at the location B (Fig. 5). Conse-~uently, the hair 34 is pulled up ~rom the skin 3 through a distance from A to B before the hair is severed at B, by cooperation of the shear plate 3 and the cutter 23.
Without lead cutter 25, the hair 34 would have been severed a-t the location A, so that the beard stu'bble left in the skin is sho,rter when a shaving apparatus having a cutting unit with lead cutter is used than when such an apparatus without lead cutters is used.
For comparison a lead cutter 25 9 wi-thout projecting portion is also shown in Fig. 5 by dashed lines.
This lead cutter 25 9, which contacts the hair 34 a-t the location C, could pull up the hair through a distance .. . . . . . .... ... ... ..... . .....
~s~o ;:3 8.11.79 5 PHN.93O8 .
--- corresponding to the distance BC only before the hair ---would be severed. Thus, when the projecting portion 31 is used a distance AC is gained when pulling up the hair and the action of the lead cutter is improved.
The projecting portion 31 means that the end 3O of the lead cutter 25 becomes thicker and in comparison with a lead cutter unit which is thicker throughout it has the advantage that the increase in mass o~ the lead cutter unit is substantially smaller and the stiffness of the elastic arms 28 is not increased.
:`
.
Claims
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A cutting unit for a dry-shaving apparatus of the kind described, comprising a plurality of cutters and a plurality of hair-pulling elements each disposed in front of an associated one of the cutters with respect to the direction of the cutting movement thereof, each hair-pulling element being arranged for movement with the associated cutter relative to the shear plate and having sliding contact with a surface of the associated cutter for movement relative to the cutter in directions away from and towards the shear plate when the cutting unit is in operation in a shaving apparatus, and each hair-pulling element having an edge which, as the element moves over a hair-entry aperture of the shear plate in front of the associated cutter when the cutting unit is in operation, contacts hairs protruding through that aperture and, by movement of the hair-pulling element away from the shear plate under the reaction force from said hairs, pulls these hairs further through the aperture, wherein each hair-pulling element has the form of a blade which is locally thickened to form a portion which projects forwardly from the element with respect to the direction of the cutting movement of the associated cut-ter and on which said edge of the element is formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7811930 | 1978-12-07 | ||
| NL7811930A NL7811930A (en) | 1978-12-07 | 1978-12-07 | SHAVER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1150040A true CA1150040A (en) | 1983-07-19 |
Family
ID=19832018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000341170A Expired CA1150040A (en) | 1978-12-07 | 1979-12-04 | Shaving apparatus |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5578989A (en) |
| AT (1) | AT372328B (en) |
| CA (1) | CA1150040A (en) |
| CH (1) | CH644783A5 (en) |
| DE (1) | DE2947231A1 (en) |
| ES (1) | ES254069Y (en) |
| FR (1) | FR2443315A1 (en) |
| GB (1) | GB2036630B (en) |
| IT (1) | IT1125890B (en) |
| NL (1) | NL7811930A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2947587C2 (en) * | 1979-11-26 | 1986-01-02 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Pre-knife as a hair pulling element for shear knives of electrically powered dry shavers |
| DE60102062T2 (en) * | 2000-05-23 | 2004-08-26 | Koninklijke Philips Electronics N.V. | shaving |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3088205A (en) * | 1961-09-15 | 1963-05-07 | Ellis Robert | Dry shaver with hair pulling means to aid in cutting the hair |
| NL7404657A (en) * | 1974-04-05 | 1975-10-07 | Philips Nv | DRY SHAVER. |
-
1978
- 1978-12-07 NL NL7811930A patent/NL7811930A/en not_active Application Discontinuation
-
1979
- 1979-09-28 FR FR7924250A patent/FR2443315A1/en active Granted
- 1979-11-23 DE DE19792947231 patent/DE2947231A1/en active Granted
- 1979-12-04 CA CA000341170A patent/CA1150040A/en not_active Expired
- 1979-12-04 CH CH1074879A patent/CH644783A5/en not_active IP Right Cessation
- 1979-12-04 IT IT27829/79A patent/IT1125890B/en active
- 1979-12-04 JP JP15646679A patent/JPS5578989A/en active Granted
- 1979-12-04 AT AT0767479A patent/AT372328B/en not_active IP Right Cessation
- 1979-12-04 GB GB7941772A patent/GB2036630B/en not_active Expired
- 1979-12-05 ES ES1979254069U patent/ES254069Y/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT372328B (en) | 1983-09-26 |
| DE2947231A1 (en) | 1980-06-26 |
| DE2947231C2 (en) | 1987-10-29 |
| NL7811930A (en) | 1980-06-10 |
| JPS5578989A (en) | 1980-06-14 |
| FR2443315B1 (en) | 1982-11-19 |
| CH644783A5 (en) | 1984-08-31 |
| GB2036630B (en) | 1982-10-20 |
| GB2036630A (en) | 1980-07-02 |
| ES254069Y (en) | 1981-08-16 |
| FR2443315A1 (en) | 1980-07-04 |
| IT1125890B (en) | 1986-05-14 |
| JPS6144037B2 (en) | 1986-10-01 |
| ES254069U (en) | 1981-02-16 |
| IT7927829A0 (en) | 1979-12-04 |
| ATA767479A (en) | 1983-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |