US3890705A - Coupling pin for an electric dry-shaver - Google Patents
Coupling pin for an electric dry-shaver Download PDFInfo
- Publication number
- US3890705A US3890705A US420115A US42011573A US3890705A US 3890705 A US3890705 A US 3890705A US 420115 A US420115 A US 420115A US 42011573 A US42011573 A US 42011573A US 3890705 A US3890705 A US 3890705A
- Authority
- US
- United States
- Prior art keywords
- coupling pin
- cutter
- coupling
- walls
- 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 - Lifetime
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 65
- 238000010168 coupling process Methods 0.000 title claims abstract description 65
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 65
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 6
- 210000005069 ears Anatomy 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 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 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- B26B19/145—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
- B26B19/14—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
-
- 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
-
- 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
- B26B19/3846—Blades; Cutters
Definitions
- ABSTRACT A sheet metal coupling pin for driving a rotatable cutter of a dryshaver, which cutter is capable of limited tilting movement and is formed with a coupling slot, the coupling pin being formed with rounded portions the radii of curvature of which are in a given relationship with the length and the width of the slot.
- the invention relates to a metal coupling pin for use in an electric dry-shaver having at least one shaving head capable of limited tilting movement.
- a cut ter comprises a plurality of blades, and is adapted to be rotatably driven and co-operates with the shaving head.
- a coupling member which is also adapted to be rotatably driven, is capable of limited tilting movement. at its end nearer the cutter carries the coupling pin and thrusts the coupling pin into engagement with the cut ter and hence the cutter into engagement with the shaving head under spring action.
- the cutter is formed with a coupling slot of rectangular cross-section having parallel walls into which the coupling pin engages so as to cooperate with the shorter walls of the coupling slot by means of portions having a curvature, the radius of which is substantially equal to one half of the width of the longer walls. and to co-operate with the longer walls by means of portions having a curvature the radius of which is substantially equal to one half of the width of the shorter walls.
- the coupling pin described in said prior art US. Pat. No. 3,748,73l provides satisfactory results, because there is a universal driving relationship between the cutter and the coupling pin.
- the coupling pin is a hardened steel component, the cylindrical lateral surfaces of which having the said radii of curvature was formed by grinding.
- Such coupling pins are comparatively expensive, in particular because of the required grinding operation which has to be performed with a comparatively high degree of accuracy on a component which owing to its small size is difficult to handle.
- This invention is characterized in that the coupling pin is made of steel sheet, and its portions which cooperate with the longer walls of the coupling slot comprise extensions of the required radius of curvature made by pressing.
- the coupling pin according to the invention can be manufactured by stamping, which means a considerable simplification of the manufacture.
- FIG. I is a partial sectional view of an electric dryshaver
- FIG. 2 is an elevation sectional view of the coupling pin of FIG. I shown 20 times actual size, which is mounted in the end of a coupling member and cooperates with a cutter part shown in section,
- FIG. 3 is a side elevation of the coupling member shown in FIG. 2,
- FIG. 4 is a plan view of a coupling member arranged in a rectangular coupling slot of a cutter in a position in which it is slightly rotated about its axis from a sub stantially parallel relationship with the slot, so that its extensions engage the longer walls of the slot, and
- FIG. 5 is an elevation sectional view of the coupling pin and of part of a cooperating cutter taken at right angles to the longer walls of the coupling slot.
- FIG. I there is shown a circular shaving head shear plate I.
- the head has a number of slits 2 and is capable of limited tilting movement rela tive to a frame plate 3 which is connected to the housing, not shown, of the dry-shaver.
- a cutter 4 which is adapted to be rotatably driven and comprises six blades 5 cooperates with the shear plate I.
- a coupling member 6, is rotatably driven. is capable of a limited tilting movement, and carries a coupling pin 7 at its end near the cutter.
- the coupling member 6 has terminal part as the drive end of its coupling pin 7 thrust into engagement with a stop member 30 of the cutter 4 by a compression spring 8 mounted in a recess 9. As a result the cutter 4 is thrust into engagement with the shear plate 1.
- the cutter 4 is formed with a coupling slot I0 of rectangular section, see in particular FIG. 4, having two pairs of parallel walls 11, I2 and I3. 14.
- the coupling pin engages in the slot I0 and cooperates with the shorter walls I1 and I2 by means of portions 15 and 16 having a curvature the radius of which is substantially equal to one half of the width of the longer walls 13 and I4, and cooperates with the said longer walls by means of portions 17 and 18 having a curvature the radius of which is substantially equal to one half of the width of the shorter walls 11 and 12.
- These ears are also bent out of the plane ofthe sheet material as indicated at 28, 29 in FIG. 4, wherein the radius of the outer surface of the curvature of each of said ears 28, 29 is substantially equal to one-half the length of the short side 11 of the rectangular aperture.
- the lower end of the coupling member 6 is widened to form a flange 19 of square cross-section which fits in a chamber 20 of corresponding crosssection formed in a gear-wheel 21.
- the chamber 20 is closed by means of a spring clip 22.
- the gear-wheel 21 On its other surface the gear-wheel 21 has a hub 23 in which a bore 24 is formed in which fits a pin 25, the other end 26 of which is knurled and pressed into a mounting plate 27.
- the gear-wheel 21 can be driven by a rotating electric motor via a transmission gear, not shown, the coupling member 6 transmitting the rotary movement to the cutter 4.
- a shaving head of a rotary dry shaver including a shear plate tiltably mounted within a housing, a rotatably cutter positioned for engaging said shear plate.
- drive means for imparting rotary motion.
- a coupling member having a first part engaged and driven by said drive means and a drive end formed as a coupling pin for engaging and driving said cutter.
- said cutter has defined therein a central, rectangular aperture defining a pair of long side-walls and a pair of side-walls for receiving said coupling pin
- said coupling pin is formed of sheet material and comprises a shank having length and width in the plane of the sheet and thickness. and a drive end which is insertable axially within said aperture and has a pair of ears which extend in the opposite directions widthwise each bar having a rounded outer edge of radius substantially equal to one-half of the length of one of said long walls.
- each ear also curved out of the plane of said sheet about a lengthwise axis, with the outer surface of each ear having a radius about said axis substantially equal to one-half the length of one of said shorter walls.
- said cutter further comprises a stop member covering said aperture and situated intermediate the shear plate and coupling pin and wherein said drive end of the coupling pin has a rounded terminal part which is urged axially into engagement with said stop member.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
Abstract
A sheet metal coupling pin for driving a rotatable cutter of a dry-shaver, which cutter is capable of limited tilting movement and is formed with a coupling slot, the coupling pin being formed with rounded portions the radii of curvature of which are in a given relationship with the length and the width of the slot.
Description
United States Patent 11 1 Tietjens COUPLING PIN FOR AN ELECTRIC DRY-SHAVER [75] Inventor: Eduard Willem Tietjens, Drachten,
Netherlands [73] Assignee: U.S. Philips Corporation, New
York, NY.
221 Filed: Nov. 29, 1973 211 Appl. No: 420,115
[30] Foreign Application Priority Data Dec. 22, 1972 Netherlands 7217486 [52] [1.5. CI 30/43.6; 64/6 [51] Int. Cl B26b 19/14 [58] Field of Search 30/42, 43.4-43.6;
THICKNESS-b- 1 1 June 24, 1975 [56] References Cited UNITED STATES PATENTS 3,078,571 2/1963 Timmerman 30/436 3,213,719 10/1965 Kloack M 81/71 3,399,453 9/1968 Biesma 30/436 3,748,731 7/1973 Kuiken 30/436 Primary Examiner-A1 Lawrence Smith Assistant ExaminerGary L. Smith Attorney, Agent, or FirmFrank R. Trifari 57] ABSTRACT A sheet metal coupling pin for driving a rotatable cutter of a dryshaver, which cutter is capable of limited tilting movement and is formed with a coupling slot, the coupling pin being formed with rounded portions the radii of curvature of which are in a given relationship with the length and the width of the slot.
5 Claims, 5 Drawing Figures LENGTH PATENTEBJun 24 I975 SHEET 'fIII/IIIIJ i &\
PATENTEDJuu24 m5 SHEET 3 -LEN THICKNESSH r-/7 WIDTH Fig.5
COUPLING PIN FOR AN ELECTRIC DRY-SHAVER BACKGROUND OF THE INVENTION The invention relates to a metal coupling pin for use in an electric dry-shaver having at least one shaving head capable of limited tilting movement. where a cut ter comprises a plurality of blades, and is adapted to be rotatably driven and co-operates with the shaving head. A coupling member which is also adapted to be rotatably driven, is capable of limited tilting movement. at its end nearer the cutter carries the coupling pin and thrusts the coupling pin into engagement with the cut ter and hence the cutter into engagement with the shaving head under spring action. The cutter is formed with a coupling slot of rectangular cross-section having parallel walls into which the coupling pin engages so as to cooperate with the shorter walls of the coupling slot by means of portions having a curvature, the radius of which is substantially equal to one half of the width of the longer walls. and to co-operate with the longer walls by means of portions having a curvature the radius of which is substantially equal to one half of the width of the shorter walls.
My co-pending Netherlands Pat. No. 6,810,708 and US. Pat. No. 3,748,731 laid open to public inspection describes such a coupling pin. An important requirement is that during operation of the dry-shaver the cut ter should always be in engagement with the associated shaving head, because otherwise a rocking movement of the cutter relative to the head is producedv This results in some of the hairs which project through the shear plate not being cut. This rocking movement. which is felt by the user as a disagreeable vibration of the shaving head, is also responsible for uneven wear of the shaving head, so that the incomplete engagement of the cutter with the shaving head is further aggravated.
The coupling pin described in said prior art US. Pat. No. 3,748,73l provides satisfactory results, because there is a universal driving relationship between the cutter and the coupling pin. The coupling pin is a hardened steel component, the cylindrical lateral surfaces of which having the said radii of curvature was formed by grinding. Such coupling pins are comparatively expensive, in particular because of the required grinding operation which has to be performed with a comparatively high degree of accuracy on a component which owing to its small size is difficult to handle.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a coupling pin of the kind described at the beginning of this specification; the manufacture of such coupling pin based on the recognition that dry-shavers of the type in which the coupling pin is to be used always have cutters which are driven in one direction only. can be appreciably simpler, resulting in lower cost. This invention is characterized in that the coupling pin is made of steel sheet, and its portions which cooperate with the longer walls of the coupling slot comprise extensions of the required radius of curvature made by pressing. The coupling pin according to the invention can be manufactured by stamping, which means a considerable simplification of the manufacture.
BRIEF DESCRIPTION OF THE DRAWINGS In order that the invention may be readily carried into effect, reference will now be made by way of example to the accompanying drawings, in which FIG. I is a partial sectional view of an electric dryshaver,
FIG. 2 is an elevation sectional view of the coupling pin of FIG. I shown 20 times actual size, which is mounted in the end of a coupling member and cooperates with a cutter part shown in section,
FIG. 3 is a side elevation of the coupling member shown in FIG. 2,
FIG. 4 is a plan view of a coupling member arranged in a rectangular coupling slot of a cutter in a position in which it is slightly rotated about its axis from a sub stantially parallel relationship with the slot, so that its extensions engage the longer walls of the slot, and
FIG. 5 is an elevation sectional view of the coupling pin and of part of a cooperating cutter taken at right angles to the longer walls of the coupling slot.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to FIG. I, there is shown a circular shaving head shear plate I. The head has a number of slits 2 and is capable of limited tilting movement rela tive to a frame plate 3 which is connected to the housing, not shown, of the dry-shaver. A cutter 4 which is adapted to be rotatably driven and comprises six blades 5 cooperates with the shear plate I. A coupling member 6, is rotatably driven. is capable of a limited tilting movement, and carries a coupling pin 7 at its end near the cutter. The coupling member 6 has terminal part as the drive end of its coupling pin 7 thrust into engagement with a stop member 30 of the cutter 4 by a compression spring 8 mounted in a recess 9. As a result the cutter 4 is thrust into engagement with the shear plate 1. The cutter 4 is formed with a coupling slot I0 of rectangular section, see in particular FIG. 4, having two pairs of parallel walls 11, I2 and I3. 14. The coupling pin engages in the slot I0 and cooperates with the shorter walls I1 and I2 by means of portions 15 and 16 having a curvature the radius of which is substantially equal to one half of the width of the longer walls 13 and I4, and cooperates with the said longer walls by means of portions 17 and 18 having a curvature the radius of which is substantially equal to one half of the width of the shorter walls 11 and 12. These ears are also bent out of the plane ofthe sheet material as indicated at 28, 29 in FIG. 4, wherein the radius of the outer surface of the curvature of each of said ears 28, 29 is substantially equal to one-half the length of the short side 11 of the rectangular aperture. With these dimensional parameters it is now feasible to manufacture this coupling pin from flat sheet metal which is cut to shape and then pressed into final shape. This is substantially cheaper than the final shape formed out of a solid block or having same cast, The lower end of the coupling member 6 is widened to form a flange 19 of square cross-section which fits in a chamber 20 of corresponding crosssection formed in a gear-wheel 21. The chamber 20 is closed by means ofa spring clip 22. On its other surface the gear-wheel 21 has a hub 23 in which a bore 24 is formed in which fits a pin 25, the other end 26 of which is knurled and pressed into a mounting plate 27. The gear-wheel 21 can be driven by a rotating electric motor via a transmission gear, not shown, the coupling member 6 transmitting the rotary movement to the cutter 4.
I claim:
1. In a shaving head of a rotary dry shaver including a shear plate tiltably mounted within a housing, a rotatably cutter positioned for engaging said shear plate. drive means for imparting rotary motion. a coupling member having a first part engaged and driven by said drive means and a drive end formed as a coupling pin for engaging and driving said cutter. and spring means engaging and urging said coupling pin axially against said cutter which is correspondingly urged axially against said shear plate the improvement in combination therewith wherein said cutter has defined therein a central, rectangular aperture defining a pair of long side-walls and a pair of side-walls for receiving said coupling pin, and said coupling pin is formed of sheet material and comprises a shank having length and width in the plane of the sheet and thickness. and a drive end which is insertable axially within said aperture and has a pair of ears which extend in the opposite directions widthwise each bar having a rounded outer edge of radius substantially equal to one-half of the length of one of said long walls. each ear also curved out of the plane of said sheet about a lengthwise axis, with the outer surface of each ear having a radius about said axis substantially equal to one-half the length of one of said shorter walls.
2. Apparatus according to claim 1 wherein said cutter further comprises a stop member covering said aperture and situated intermediate the shear plate and coupling pin and wherein said drive end of the coupling pin has a rounded terminal part which is urged axially into engagement with said stop member.
3. Apparatus according to claim 1 wherein said coupling pin is tiltably mounted relative to said housing.
4. Apparatus according to claim 1 wherein said coupling member is cylindrical with a central bore. and said coupling pin is a separate element mounted for axial movement in said bore and said spring means is situated in said bore and urges said pin axially outward of the bore 5. Apparatus according to claim 1 wherein said cou pling pin comprises sheet metal.
Claims (5)
1. In a shaving head of a rotary dry shaver including a shear plate tiltably mounted within a housing, a rotatably cutter positioned for engaging said shear plate, drive means for imparting rotary motion, a coupling member having a first part engaged and driven by said drive means and a drive end formed as a coupling pin for engaging and driving said cutter, and spring means engaGing and urging said coupling pin axially against said cutter which is correspondingly urged axially against said shear plate, the improvement in combination therewith wherein said cutter has defined therein a central, rectangular aperture defining a pair of long side-walls and a pair of side-walls for receiving said coupling pin, and said coupling pin is formed of sheet material and comprises a shank having length and width in the plane of the sheet and thickness, and a drive end which is insertable axially within said aperture and has a pair of ears which extend in the opposite directions widthwise, each bar having a rounded outer edge of radius substantially equal to onehalf of the length of one of said long walls, each ear also curved out of the plane of said sheet about a lengthwise axis, with the outer surface of each ear having a radius about said axis substantially equal to one-half the length of one of said shorter walls.
2. Apparatus according to claim 1 wherein said cutter further comprises a stop member covering said aperture and situated intermediate the shear plate and coupling pin and wherein said drive end of the coupling pin has a rounded terminal part which is urged axially into engagement with said stop member.
3. Apparatus according to claim 1 wherein said coupling pin is tiltably mounted relative to said housing.
4. Apparatus according to claim 1 wherein said coupling member is cylindrical with a central bore, and said coupling pin is a separate element mounted for axial movement in said bore and said spring means is situated in said bore and urges said pin axially outward of the bore.
5. Apparatus according to claim 1 wherein said coupling pin comprises sheet metal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7217486A NL7217486A (en) | 1972-12-22 | 1972-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3890705A true US3890705A (en) | 1975-06-24 |
Family
ID=19817607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US420115A Expired - Lifetime US3890705A (en) | 1972-12-22 | 1973-11-29 | Coupling pin for an electric dry-shaver |
Country Status (9)
Country | Link |
---|---|
US (1) | US3890705A (en) |
AT (1) | AT324162B (en) |
CA (1) | CA987092A (en) |
CH (1) | CH568825A5 (en) |
DE (1) | DE2360085A1 (en) |
ES (1) | ES421647A1 (en) |
FR (1) | FR2214255A5 (en) |
GB (1) | GB1388520A (en) |
NL (1) | NL7217486A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4257161A (en) * | 1977-11-28 | 1981-03-24 | U.S. Philips Corporation | Dry-shaving apparatus |
US4663842A (en) * | 1984-06-26 | 1987-05-12 | U.S. Philips Corporation | Shaving apparatus |
US4998352A (en) * | 1987-01-27 | 1991-03-12 | U.S. Philips Corp. | Cutting unit for a shaving apparatus |
US6145200A (en) * | 1998-03-27 | 2000-11-14 | U.S. Philips Corporation | Shaving apparatus |
US20030019107A1 (en) * | 2001-07-30 | 2003-01-30 | Pieter Visman | Coupling for internal cutting member of rotary shaving apparatus |
US20060048390A1 (en) * | 2003-01-20 | 2006-03-09 | Koninklijke Philips Electronics, N.V. | Shaving apparatus |
WO2018149090A1 (en) * | 2017-02-14 | 2018-08-23 | 广东罗曼智能科技股份有限公司 | Rotary shaver capable of being disassembled |
US20190143546A1 (en) * | 2016-06-21 | 2019-05-16 | Koninklijke Philips N.V. | Shaving apparatus with detachable cutting unit |
KR20210022713A (en) * | 2018-07-25 | 2021-03-03 | 썬전 수카스 테크놀로지 컴퍼니 리미티드 | Floating rotating structure, personal care device and massager |
KR20210024057A (en) * | 2018-07-25 | 2021-03-04 | 썬전 수카스 테크놀로지 컴퍼니 리미티드 | Shaver and blade head floating structure |
US20210347074A1 (en) * | 2018-10-23 | 2021-11-11 | Koninklijke Philips N.V. | Hand-held appliance with improved coupling structure for a functional attachment of the appliance |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3078571A (en) * | 1959-02-20 | 1963-02-26 | Philips Corp | Cutting head for use in a dry shaving apparatus having an oval shape movable cutter |
US3213719A (en) * | 1962-11-01 | 1965-10-26 | Robert C Kloack | Rotary driving tool with universal action |
US3399453A (en) * | 1965-07-15 | 1968-09-03 | Philips Corp | Dry-shaving apparatus having shaving locking means |
US3748731A (en) * | 1971-08-30 | 1973-07-31 | Philips Corp | Coupling for shaver drive shaft and cutter |
-
1972
- 1972-12-22 NL NL7217486A patent/NL7217486A/xx unknown
-
1973
- 1973-11-29 US US420115A patent/US3890705A/en not_active Expired - Lifetime
- 1973-12-03 DE DE2360085A patent/DE2360085A1/en active Pending
- 1973-12-19 AT AT1063273A patent/AT324162B/en not_active IP Right Cessation
- 1973-12-19 FR FR7345500A patent/FR2214255A5/fr not_active Expired
- 1973-12-19 GB GB5876273A patent/GB1388520A/en not_active Expired
- 1973-12-19 CH CH1780173A patent/CH568825A5/xx not_active IP Right Cessation
- 1973-12-19 CA CA188,529A patent/CA987092A/en not_active Expired
- 1973-12-20 ES ES421647A patent/ES421647A1/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3078571A (en) * | 1959-02-20 | 1963-02-26 | Philips Corp | Cutting head for use in a dry shaving apparatus having an oval shape movable cutter |
US3213719A (en) * | 1962-11-01 | 1965-10-26 | Robert C Kloack | Rotary driving tool with universal action |
US3399453A (en) * | 1965-07-15 | 1968-09-03 | Philips Corp | Dry-shaving apparatus having shaving locking means |
US3748731A (en) * | 1971-08-30 | 1973-07-31 | Philips Corp | Coupling for shaver drive shaft and cutter |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4257161A (en) * | 1977-11-28 | 1981-03-24 | U.S. Philips Corporation | Dry-shaving apparatus |
US4663842A (en) * | 1984-06-26 | 1987-05-12 | U.S. Philips Corporation | Shaving apparatus |
US4998352A (en) * | 1987-01-27 | 1991-03-12 | U.S. Philips Corp. | Cutting unit for a shaving apparatus |
US6145200A (en) * | 1998-03-27 | 2000-11-14 | U.S. Philips Corporation | Shaving apparatus |
US20030019107A1 (en) * | 2001-07-30 | 2003-01-30 | Pieter Visman | Coupling for internal cutting member of rotary shaving apparatus |
US6722038B2 (en) * | 2001-07-30 | 2004-04-20 | Koninklijke Philips Electronics N.V. | Coupling for internal cutting member of rotary shaving apparatus |
US20060048390A1 (en) * | 2003-01-20 | 2006-03-09 | Koninklijke Philips Electronics, N.V. | Shaving apparatus |
US7530171B2 (en) | 2003-01-20 | 2009-05-12 | Koninklijke Philips Electronics N.V. | Shaving apparatus |
US10850408B2 (en) * | 2016-06-21 | 2020-12-01 | Koninklijke Philips N.V. | Shaving apparatus with detachable cutting unit |
US20190143546A1 (en) * | 2016-06-21 | 2019-05-16 | Koninklijke Philips N.V. | Shaving apparatus with detachable cutting unit |
WO2018149090A1 (en) * | 2017-02-14 | 2018-08-23 | 广东罗曼智能科技股份有限公司 | Rotary shaver capable of being disassembled |
US10357890B2 (en) | 2017-02-14 | 2019-07-23 | Guangdong Roman Technology Co., Ltd. | Detachable floating shaver |
KR20210022713A (en) * | 2018-07-25 | 2021-03-03 | 썬전 수카스 테크놀로지 컴퍼니 리미티드 | Floating rotating structure, personal care device and massager |
KR20210024057A (en) * | 2018-07-25 | 2021-03-04 | 썬전 수카스 테크놀로지 컴퍼니 리미티드 | Shaver and blade head floating structure |
EP3827939A4 (en) * | 2018-07-25 | 2021-07-07 | Shenzen Soocas Technology Co., Ltd. | Shaver and blade floating structure |
EP3827940A4 (en) * | 2018-07-25 | 2021-07-14 | Shenzen Soocas Technology Co., Ltd. | Floating rotation structure, personal nursing device, and massager |
US20210347074A1 (en) * | 2018-10-23 | 2021-11-11 | Koninklijke Philips N.V. | Hand-held appliance with improved coupling structure for a functional attachment of the appliance |
US11833699B2 (en) * | 2018-10-23 | 2023-12-05 | Koninklijke Philips N.V. | Hand-held appliance with improved coupling structure for a functional attachment of the appliance |
Also Published As
Publication number | Publication date |
---|---|
ES421647A1 (en) | 1976-04-01 |
GB1388520A (en) | 1975-03-26 |
CA987092A (en) | 1976-04-13 |
FR2214255A5 (en) | 1974-08-09 |
NL7217486A (en) | 1974-06-25 |
CH568825A5 (en) | 1975-11-14 |
AT324162B (en) | 1975-08-25 |
DE2360085A1 (en) | 1974-07-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BANK AND TRUST COMPANY, 225 FRANKLIN STREET, BOSTO Free format text: MORTGAGE;ASSIGNOR:REHEIS CHEMICAL COMPANY, INC.;REEL/FRAME:004586/0269 Effective date: 19860411 Owner name: BANK AND TRUST COMPANY,MASSACHUSETTS Free format text: MORTGAGE;ASSIGNOR:REHEIS CHEMICAL COMPANY, INC.;REEL/FRAME:004586/0269 Effective date: 19860411 |