US3639979A - Dry-shaving apparatus - Google Patents

Dry-shaving apparatus Download PDF

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Publication number
US3639979A
US3639979A US859247A US3639979DA US3639979A US 3639979 A US3639979 A US 3639979A US 859247 A US859247 A US 859247A US 3639979D A US3639979D A US 3639979DA US 3639979 A US3639979 A US 3639979A
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US
United States
Prior art keywords
shear plate
ring
dry
cutting member
housing
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
Application number
US859247A
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English (en)
Inventor
Frans Zuurveen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Philips Corp
Original Assignee
US Philips Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3639979A publication Critical patent/US3639979A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • 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

Definitions

  • ABSTRACT This dry-shaving apparatus has a shear plate deflected into a partial toroidal shape, its surface being cooperatively engaged with a movable cutting member and having inner and outer opposing edges.
  • a first restraining member engages and applies a torque to the inner edge while a second member slidingly engages the outer edge of the plate and resists the torque, thereby maintaining the toroidal shape.
  • the invention relates to dry-shaving apparatus and firstly to a dry-shaving apparatus as described in a prior patent application Ser. No. 665,850 filed Sept. 6, 1967; now abandoned in favor of a continuation, Ser. No. 849,553, filed July 18, 1969, of the kind including a thin elastic arcuate shear plate which is provided with hair-inlet apertures and the shaving surface of which is in the form of a surface obtained by rotation about an axis of a curved line portion not intersected by the axis of rota tion so that the shaving surface forms part of a toroidal surface, the shear plate having a circular outer edge and a circular inner edge concentrical thereto, while a movable cutting member adapted to rotate or to oscillate is operative below said shear plate, the cutting member and the shear plate being pressed against each other, and secondly to a dry-shaving apparatus of the known type including two thin elastic arcuate shear plates which are provided with hair-inlet apertures and the shaving surface of
  • dry-shaving apparatus having a double cylindrical shaving head.
  • the thin elastic shear plate is stretched over a likewise toroidal cutting member adapted to rotate or to oscillate.
  • the shear plate which is preferably flat in the nonstreched condition, has a circular outer edge and a concentrical inner edge.
  • the invention has for an object to provide a dry-shaving apparatus of the constructions described in which a joint between the housing of the dry-shaving apparatus and the inner edge in the case of the toroidal shaving head or the inner edges in the case of the double cylindrical shaving head can be dispensed with.
  • the inner edge of the shear plate is fitted in a ring or a disc which is solely connected to the shear plate.
  • the two inner edges are together fitted in a strip or a rod which is solely connected to the shear plates.
  • the inner edge of the shear plate is fitted in a ring or a disc which consists wholly or in part of a synthetic material.
  • the shear plate is shaped into the required toroidal form in ajig with a die both having a suitable shape and the inner edge is then cast or pressed.
  • the inner edge can be fitted in a ring or a disc by a method which is simple from a technical viewpoint.
  • the outer edge of the shear plate is also fitted in an outer ring.
  • the outer ring in which the outer edge is fitted consists, wholly or in part, of a synthetic material.
  • the outer edge can be fitted in an outer ring by the method which has already been described for the inner edge; preferably, the inner ring or disc and the outer ring are cast or pressed in one operation.
  • the strip or rod consists, wholly or in part, of a synthetic material.
  • the strip or rod is provided in quite the same manner as already described for the inner ring or disc and the outer ring in the case of a toroidal shaving head.
  • the outer edges are also fitted in a frame. This affords the advantage that the shaving head forms a unit.
  • the frame consists, wholly or in pan, of a synthetic material.
  • FIG. 1 is a perspective view of a spring element for explaining a principal underlying this invention
  • FIG. 2 is a perspective view of a double spring, similar to FIG. 1,
  • FIG. 3 is a partial sectional, perspective view showing a shear plate of a rotary shaving head of this invention
  • FIG. 4 is a partial elevation view in section of a new shaving head
  • FIG. 5 is an exploded perspective view of the shaving head in FIG. 4.
  • FIG. 1 shows diagrammatically a strip 1 having a constant cross section and a constant width which may be made, for example, of steel and which is arranged with sliding fit at 2, while an external torque is exerted on said strip at 4.
  • the strip is loaded by a mass of material 3 which on its lower side has a shape such that it is in contact with the strip 1 at all points. If the strip is cast or secured, so to say, at 4 into a block of material 5 having a negligible weight and if the assembly is constructed so as to be symmetrical, the situation of FIG. 2 arises in which it is important for the block 5 to be in equilibrium without the necessity of exerting external forces on it. It is not essential that the strip 1 should have a uniform thickness and width.
  • FIG. 3 which is obtained from FIG. 2 by rotation, shows the principle of the toroidal shaving head according to the invention.
  • FIG. 4 An embodiment of a dry-shaving apparatus according to the invention having a toroidal shaving head will now be described with reference to FIGS. 4 and 5.
  • the housing of a dry-shaving apparatus having a toroidal shaving head is denoted in FIG. 4
  • the motor partially shown as 6, which may be in the form of a continuously rotating motor, drives the cutting member 7 via shaft 7'.
  • Cutting member of which is pressed in a suitable manner as by spring 7" against the shear plate 8.
  • the inner edge of the shear plate is fitted in a disc assembly 9 which is composed of three parts, i.e., the ring 10, the disc 11 and a filler mass 12.
  • the ring 10 and the disc 11 may be made of metal or of a synthetic material, while the filler mass 12 may consist, for example, of an epoxy resin which may be applied in the liquid state.
  • the inner edge of the shear plate 8 can be fitted in a simple manner with the aid ofajig in the disc 9.
  • the disc 1 1 is provided with a centering aperture 13.
  • the outer ring assembly retaining means 14 is composed in a corresponding manner of a first ring 15, a second ring 16 and a filler mass 17.
  • the shaving head may advantageously be centered, for example, in the manner shown, with respect to the cutting member 7, the ring 10 cooperating with a ring l9'which is fixedly secured to the cutting member and which may be made of a material which, in cooperation with the ring 10, exhibits favorable running properties.
  • FIG. 5 shows separately and in perspective view the shaving head 18 and the cutting member 7 operatively engageable with hair-receiving slits 22 of the shear plate in the shaving head. It should be noted that in case the shaving head is not secured on the dry-shaving apparatus, as in FIG. 5, so that the shear plate is not pressed against the cutting member, this shear plate assumes a slightly different form.
  • a dry shaver comprising:
  • a cutting member which has cutting surfaces, and a concentric centering ring, and is rotatably mounted in the housing
  • a shaving head formed of (i) a resilient, shear plate having circular inner and outer edges, a plurality of hair-receiving apertures, and a cutting surface, and (ii) a circular center part to which the inner edge of said plate is fixedly attached, said plate being flexed into a partial toroid shape and disposed with the toroid axis and cutting member axis coincident, the outer edge of the shear plate engaging the housing, and the centering ring rotatably engaging said center part, and

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Food-Manufacturing Devices (AREA)
  • Dry Shavers And Clippers (AREA)
US859247A 1966-09-20 1969-09-17 Dry-shaving apparatus Expired - Lifetime US3639979A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6613222A NL6613222A (fr) 1966-09-20 1966-09-20
US85924769A 1969-09-17 1969-09-17

Publications (1)

Publication Number Publication Date
US3639979A true US3639979A (en) 1972-02-08

Family

ID=26644091

Family Applications (1)

Application Number Title Priority Date Filing Date
US859247A Expired - Lifetime US3639979A (en) 1966-09-20 1969-09-17 Dry-shaving apparatus

Country Status (5)

Country Link
US (1) US3639979A (fr)
BE (1) BE703737A (fr)
DE (1) DE1553778A1 (fr)
GB (1) GB1202247A (fr)
NL (1) NL6613222A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393586A (en) * 1979-08-07 1983-07-19 Matsushita Electric Works, Ltd. Shaving blade assembly for rotary type electric shaver
US4675998A (en) * 1984-10-09 1987-06-30 U.S. Philips Corporation Dry-shaving apparatus
EP0599401A1 (fr) * 1992-11-23 1994-06-01 Koninklijke Philips Electronics N.V. Rasoir électrique
US6082003A (en) * 1997-02-19 2000-07-04 U.S. Philips Corporation Shaving apparatus
US20100175258A1 (en) * 2007-06-13 2010-07-15 Koninklijke Philips Electronics N.V. Shaving apparatus, a cutting unit and a shaving head
EP3260253A1 (fr) * 2016-06-24 2017-12-27 Severn Innovation Ltd Feuille pour un rasoir electrique et un rasoir electrique comprenant un tel film
US20230363321A1 (en) * 2019-05-22 2023-11-16 LPF Robotics, LLC Apparatuses and Methods for Removing Plant Material
US11975456B2 (en) 2018-11-05 2024-05-07 Koninklijke Philips N.V. Shaving apparatus with improved cap functionality

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5285688U (fr) * 1975-12-16 1977-06-25
NL8400887A (nl) * 1984-03-21 1985-10-16 Philips Nv Scheerapparaat.
JP4127290B2 (ja) 2006-04-25 2008-07-30 松下電工株式会社 電気かみそり用の内刃及び往復式電気かみそり

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH25696A (de) * 1901-11-18 1903-06-15 Oerlikon Maschf Stromabnehmer bei elektrischen Bahnen mit oberirdischer Stromzuführung
US2134609A (en) * 1938-02-07 1938-10-25 Charles W Hay Electric shaver
US2291852A (en) * 1940-02-21 1942-08-04 Joseph H Weatherford Shaving apparatus
FR909590A (fr) * 1944-03-08 1946-05-13 Hermann Konrad S A Rasoir mécanique
US2575741A (en) * 1945-08-14 1951-11-20 Eleanor U Andrews Shaving apparatus
US2595693A (en) * 1949-01-06 1952-05-06 Cecil K Norwood Rotary shaving device
US2632948A (en) * 1948-12-06 1953-03-31 Konrad Hermann Mechanical razor
US2677885A (en) * 1950-09-08 1954-05-11 Kenneth W Chaun Shaving apparatus
US2816358A (en) * 1953-07-22 1957-12-17 Philips Corp Cutter head of dry-shaving apparatus
US2952908A (en) * 1956-01-17 1960-09-20 Philips Corp Dry shaver shear plate having an axial movement in relation to a rotary cutter
CH353652A (de) * 1957-12-12 1961-04-15 W Ammann Max Mechanischer Rasierapparat
US2982021A (en) * 1957-08-05 1961-05-02 Anthony P Miller Cutting head for a dry shaver
US2992481A (en) * 1958-09-15 1961-07-18 Alvin H Shoemaker Manually operated oscillating disc dry shaver
US3019525A (en) * 1960-06-29 1962-02-06 Bruecker John Shear plate and cutter assembly for rotary type dry shaver
US3116551A (en) * 1960-09-07 1964-01-07 Nicholas T Anton Rotary shaver
US3401453A (en) * 1966-05-27 1968-09-17 Sunbeam Corp Electric dry shaver

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH25696A (de) * 1901-11-18 1903-06-15 Oerlikon Maschf Stromabnehmer bei elektrischen Bahnen mit oberirdischer Stromzuführung
US2134609A (en) * 1938-02-07 1938-10-25 Charles W Hay Electric shaver
US2291852A (en) * 1940-02-21 1942-08-04 Joseph H Weatherford Shaving apparatus
FR909590A (fr) * 1944-03-08 1946-05-13 Hermann Konrad S A Rasoir mécanique
US2575741A (en) * 1945-08-14 1951-11-20 Eleanor U Andrews Shaving apparatus
US2632948A (en) * 1948-12-06 1953-03-31 Konrad Hermann Mechanical razor
US2595693A (en) * 1949-01-06 1952-05-06 Cecil K Norwood Rotary shaving device
US2677885A (en) * 1950-09-08 1954-05-11 Kenneth W Chaun Shaving apparatus
US2816358A (en) * 1953-07-22 1957-12-17 Philips Corp Cutter head of dry-shaving apparatus
US2952908A (en) * 1956-01-17 1960-09-20 Philips Corp Dry shaver shear plate having an axial movement in relation to a rotary cutter
US2982021A (en) * 1957-08-05 1961-05-02 Anthony P Miller Cutting head for a dry shaver
CH353652A (de) * 1957-12-12 1961-04-15 W Ammann Max Mechanischer Rasierapparat
US2992481A (en) * 1958-09-15 1961-07-18 Alvin H Shoemaker Manually operated oscillating disc dry shaver
US3019525A (en) * 1960-06-29 1962-02-06 Bruecker John Shear plate and cutter assembly for rotary type dry shaver
US3116551A (en) * 1960-09-07 1964-01-07 Nicholas T Anton Rotary shaver
US3401453A (en) * 1966-05-27 1968-09-17 Sunbeam Corp Electric dry shaver

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393586A (en) * 1979-08-07 1983-07-19 Matsushita Electric Works, Ltd. Shaving blade assembly for rotary type electric shaver
US4675998A (en) * 1984-10-09 1987-06-30 U.S. Philips Corporation Dry-shaving apparatus
EP0599401A1 (fr) * 1992-11-23 1994-06-01 Koninklijke Philips Electronics N.V. Rasoir électrique
CN1037330C (zh) * 1992-11-23 1998-02-11 菲利浦电子有限公司 剃须装置
US6082003A (en) * 1997-02-19 2000-07-04 U.S. Philips Corporation Shaving apparatus
US20100175258A1 (en) * 2007-06-13 2010-07-15 Koninklijke Philips Electronics N.V. Shaving apparatus, a cutting unit and a shaving head
US9821478B2 (en) * 2007-06-13 2017-11-21 Koninklijke Philips N.V. Shaving apparatus, a cutting unit, and a shaving head
US10850409B2 (en) 2007-06-13 2020-12-01 Koninklijke Philips N.V. Shaving apparatus, a cutting unit and a shaving head
EP3260253A1 (fr) * 2016-06-24 2017-12-27 Severn Innovation Ltd Feuille pour un rasoir electrique et un rasoir electrique comprenant un tel film
US11975456B2 (en) 2018-11-05 2024-05-07 Koninklijke Philips N.V. Shaving apparatus with improved cap functionality
US20230363321A1 (en) * 2019-05-22 2023-11-16 LPF Robotics, LLC Apparatuses and Methods for Removing Plant Material

Also Published As

Publication number Publication date
GB1202247A (en) 1970-08-12
NL6613222A (fr) 1968-03-21
DE1553778A1 (de) 1971-08-19
BE703737A (fr) 1968-03-11

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