US2824367A - Dry shaver having combination suction and adjustable cutting means - Google Patents

Dry shaver having combination suction and adjustable cutting means Download PDF

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Publication number
US2824367A
US2824367A US517305A US51730555A US2824367A US 2824367 A US2824367 A US 2824367A US 517305 A US517305 A US 517305A US 51730555 A US51730555 A US 51730555A US 2824367 A US2824367 A US 2824367A
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cutter
shearing
housing
comb
cutter elements
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US517305A
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Arthur C Mcwilliams
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    • 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
    • B26B19/14—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
    • B26B19/143—Details of outer cutters
    • 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
    • B26B19/44—Suction means for collecting severed hairs or for the skin to be shaved

Definitions

  • FIG 9 AKTHUKC.
  • Means are provided for adjusting the contact pressure between the cutter elements 58. 59 and 61 with the under side of the shear comb 36 seen in Fig. 2, and to this end the hub 46 is bored as at 7l, the coupling member 43 being likewise .bored at 72, the two bores 71 and 72 retaining a spring 73 held therein.
  • the spring 73 urges the cutter 50 against the underside vof the shearing comb 36 in a manner well understood.l
  • the hub 46 has a recess 74 in the end thereof remote from the shaft 42, and a ball 76 is arranged to seat in the recess 74.
  • screw 77 having a concave seat 75 which is threaded into an internally threaded sleeve 78 molded conczntrically with the inner ange 4l, the adjusting screw 77 having an hexagonal opening 79 therein, to receive an adjusting wrench, not shown.
  • the proper deformation may thus be placed upon the spring 73 to adjust the contact pressure of the cutter elements 58, 59 and 61 fagainst the underside of the shearing comb 36.
  • the adjusting screw 77 may be turned to a position so that in its cooperation with the spring 73 the contact pressure of the cutter elements against the shearing comb may be substantially reduced to Zero, thereby substantially eliminating any friction therebetween causing heat. ⁇
  • a shearing comb referred to generally' by the reference numeral 36a.
  • Such a shear comb may be formed of metal mesh 8l which may be placed in a press to atten the strands 82 making up the mesh 81.
  • the same may also be constructed to provide a generally annular shape cutter head 36a having an outer rim 37a and an inner rim 39a which can be imbedded by a molding process in the outer ange 38 and the inner flange 41 as with the embodiment seen in Fig. 2.
  • the dry shaver according to the present invention presents a number of advantages not to be found in the shavers of the prior art.
  • One of the important advantages resides in having the cutter elements travel in different orbital paths so as to minimize the heat between such cutter elements and the shearing head.
  • Another advantage resides in the provision of vanes formed intet grally with the cutter elements thereby to provide suction to insure that the skin is brought into close contact with the shearing head and to bring the hair shafts into position for shearing.
  • the provision of the vane members also enables the cuttings to be dispersed as fast as they are formed, thereby making it unnecessary to clean the shaver after each use.
  • the constant movement of air through the shearing head and past the cutter elements reduces the heat at the cutter head to a minimum.
  • Another important advantage resides in the provision of the adjusting screw for varying the pressure between the shear comb and the cutter elements for the purpose of minimizing the heat, and also reducing unwanted wear occasioned by too great a contact pressure between the cutter elements and shear comb.
  • a housing a shearing head secured to said housing and arranged to contact the skin, said shearing head including an annular shaped shearing comb with inner and outer rims secured to inner and outer flanges, a drive shaft extending withinsaidhousing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate in different orbits, vane members disposed on said cutterr for creating suction against said shearinghead, openings l i in said housing spaced from said shearing head todisperse
  • the ball 76 cooperates'with ⁇ an adjustingcuttings resulting from the action of said cutter elements and said shearing head, resilient means biasing said cutter in a direction toward said shearing comb, and means for adjusting the position of said cutter with respect to said shearing comb.
  • a housing a shearing head secured to said housing and arranged to contact the skin, said shearing head including an annular shaped shearing comb with inner and outer rims embedded in inner and outer flanges, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate indifferent orbits, resilient means biasing said cutter 1n a direction toward said shearing comb, and means tor adjusting the position of said cutter with respect to said shearing comb.
  • a housing a shearing head secured to said housing and arranged to contact the skin, said shearing head comprising an annular shaped shearing comb, an outer rim embedding the outer rim of said annular shaped shearing comb, an inner rim embedding the inner rim of said annular shaped shearing como, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing comb, said cutter elements being displaced radially from each other so as to rotate in difierent orbits, means driven by said shaft tor creating suction against said shearing head, and means supported by said inner rim for adjusting the position of said cutter elements with respect to said shearing comb.
  • a housing a shearing head secured to said housing and arranged to contact the skin, said shearing head comprising an annular shaped shearing comb, an outer rim embedding the outer rim of said annular shaped shearing comb, and an inner rim embedding the inner rim of said annular shaped shearing comb, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, means driven by said shaft for creating suction against said shearing head, and means for adjusting the position of said cutter elements with respect to said shearing comb comprising a splined connection between said shaft and said cutter, a spring acting between vsaid shaft and said cutter, and an adjusting member threadably held in said inner rim and bearing against said cutter.
  • a housing Ina dry shaver, a housing, a shearing head secured to said housing and having a shearing comb arranged to contact the skin, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate in different orbits, means driven by said shaft for creating suction against said shearing head, openingsin said housing spaced from said shearing head to disperse cuttings resulting from the action of said cutter elements and said shearing head, and means sup ported on said shearing head for adjusting the position of said cutter elements with respect to said shearing comb.
  • a housing a thin perforated shearing head secured to said.v housing and arranged to contact the skin, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate indifferent orbits, vane members disposed on said cutter for creating suction against said shearing head, ar td openings in said housing spaced from said shearing head, to
  • a dry shaver a housing, a thin perforated shearing head secured to said housing and arranged to contact the skin, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate in different orbits, means driven by said shaft for creating suction against said shearing head, and means for adjusting the position of said cutter elements with respect to said shearing head.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Description

Feb. 25, 1958 A. c. McwlLLlAMs y 2,824,367
DRY SHAVER HAVING COMBINATION SUCTION AND ADJUSTABLE CUTTING MEANS 4 Filed June 22, 1955 2 Sheets-Sheet 1 lNvENToR ARTHUR C. Mc WH-LIAMS ATTORNEYS Feb. 25, 1958 A. c. MCWILLIAMS 2,824,367
' DRY SHAVER HAVING COMBINATION SUCTION AND ADJUSTABLE CUTTING MEANS Filed June 2z, 1955 2 sheets-sheet 2 'ra se 54 55 41 1719 26' PIG. 2
l INVENTQR FIG 9 AKTHUKC. MW|LL|AM5 ATTORN EY5 gether with the vane 67 serve to sweep air out of a plurality of openings 69 in the housing 21.
Means are provided for adjusting the contact pressure between the cutter elements 58. 59 and 61 with the under side of the shear comb 36 seen in Fig. 2, and to this end the hub 46 is bored as at 7l, the coupling member 43 being likewise .bored at 72, the two bores 71 and 72 retaining a spring 73 held therein. The spring 73 urges the cutter 50 against the underside vof the shearing comb 36 in a manner well understood.l
The hub 46 has a recess 74 in the end thereof remote from the shaft 42, and a ball 76 is arranged to seat in the recess 74. screw 77 having a concave seat 75 which is threaded into an internally threaded sleeve 78 molded conczntrically with the inner ange 4l, the adjusting screw 77 having an hexagonal opening 79 therein, to receive an adjusting wrench, not shown. The proper deformation may thus be placed upon the spring 73 to adjust the contact pressure of the cutter elements 58, 59 and 61 fagainst the underside of the shearing comb 36. The adjusting screw 77 may be turned to a position so that in its cooperation with the spring 73 the contact pressure of the cutter elements against the shearing comb may be substantially reduced to Zero, thereby substantially eliminating any friction therebetween causing heat.`
Referring now to Figs. 8 and 9 of the drawings, there is shown another form of a shearing comb referred to generally' by the reference numeral 36a. Such a shear comb may be formed of metal mesh 8l which may be placed in a press to atten the strands 82 making up the mesh 81.` The same may also be constructed to provide a generally annular shape cutter head 36a having an outer rim 37a and an inner rim 39a which can be imbedded by a molding process in the outer ange 38 and the inner flange 41 as with the embodiment seen in Fig. 2.
The dry shaver according to the present invention presents a number of advantages not to be found in the shavers of the prior art. One of the important advantages resides in having the cutter elements travel in different orbital paths so as to minimize the heat between such cutter elements and the shearing head. Another advantage resides in the provision of vanes formed intet grally with the cutter elements thereby to provide suction to insure that the skin is brought into close contact with the shearing head and to bring the hair shafts into position for shearing. The provision of the vane members also enables the cuttings to be dispersed as fast as they are formed, thereby making it unnecessary to clean the shaver after each use. The constant movement of air through the shearing head and past the cutter elements reduces the heat at the cutter head to a minimum.
Another important advantage resides in the provision of the adjusting screw for varying the pressure between the shear comb and the cutter elements for the purpose of minimizing the heat, and also reducing unwanted wear occasioned by too great a contact pressure between the cutter elements and shear comb.
While the drawings illustrate a shearing head having inner and outer anges made of moldable material, it is within the skill of one in the art to construct the shearing head entirely of a suitable metal properly formed.
I claim as my invention:
l. In a dry shaver, a housing, a shearing head secured to said housing and arranged to contact the skin, said shearing head including an annular shaped shearing comb with inner and outer rims secured to inner and outer flanges, a drive shaft extending withinsaidhousing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate in different orbits, vane members disposed on said cutterr for creating suction against said shearinghead, openings l i in said housing spaced from said shearing head todisperse The ball 76 cooperates'with `an adjustingcuttings resulting from the action of said cutter elements and said shearing head, resilient means biasing said cutter in a direction toward said shearing comb, and means for adjusting the position of said cutter with respect to said shearing comb.
2. In a dry shaver, a housing, a shearing head secured to said housing and arranged to contact the skin, said shearing head including an annular shaped shearing comb with inner and outer rims embedded in inner and outer flanges, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate indifferent orbits, resilient means biasing said cutter 1n a direction toward said shearing comb, and means tor adjusting the position of said cutter with respect to said shearing comb.
3. In a dry shaver, a housing, a shearing head secured to said housing and arranged to contact the skin, said shearing head comprising an annular shaped shearing comb, an outer rim embedding the outer rim of said annular shaped shearing comb, an inner rim embedding the inner rim of said annular shaped shearing como, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing comb, said cutter elements being displaced radially from each other so as to rotate in difierent orbits, means driven by said shaft tor creating suction against said shearing head, and means supported by said inner rim for adjusting the position of said cutter elements with respect to said shearing comb.
4. In a dry shaver, a housing, a shearing head secured to said housing and arranged to contact the skin, said shearing head comprising an annular shaped shearing comb, an outer rim embedding the outer rim of said annular shaped shearing comb, and an inner rim embedding the inner rim of said annular shaped shearing comb, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, means driven by said shaft for creating suction against said shearing head, and means for adjusting the position of said cutter elements with respect to said shearing comb comprising a splined connection between said shaft and said cutter, a spring acting between vsaid shaft and said cutter, and an adjusting member threadably held in said inner rim and bearing against said cutter.
S. Ina dry shaver, a housing, a shearing head secured to said housing and having a shearing comb arranged to contact the skin, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate in different orbits, means driven by said shaft for creating suction against said shearing head, openingsin said housing spaced from said shearing head to disperse cuttings resulting from the action of said cutter elements and said shearing head, and means sup ported on said shearing head for adjusting the position of said cutter elements with respect to said shearing comb.
6. In a dry shaver, a housing, a thin perforated shearing head secured to said.v housing and arranged to contact the skin, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate indifferent orbits, vane members disposed on said cutter for creating suction against said shearing head, ar td openings in said housing spaced from said shearing head, to
disperse cuttings resulting from the action of said cutter elements and said shearing head, and means for adjusting the position of said cutter elements with respect to said shearing head.
7. In a dry shaver, a housing, a thin perforated shearing head secured to said housing and arranged to contact the skin, a drive shaft extending within said housing, a cutter mounted on said shaft for rotation therewith, said cutter having cutter elements mounted thereon and cooperating with said shearing head, said cutter elements being displaced radially from each other so as to rotate in different orbits, means driven by said shaft for creating suction against said shearing head, and means for adjusting the position of said cutter elements with respect to said shearing head.
References Cited in the tile of this patent UNITED STATES PATENTS
US517305A 1955-06-22 1955-06-22 Dry shaver having combination suction and adjustable cutting means Expired - Lifetime US2824367A (en)

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Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2916821A (en) * 1958-10-08 1959-12-15 John M Witmer Rotary dry shaver with waste collecting means
US2982021A (en) * 1957-08-05 1961-05-02 Anthony P Miller Cutting head for a dry shaver
US3019525A (en) * 1960-06-29 1962-02-06 Bruecker John Shear plate and cutter assembly for rotary type dry shaver
US3067791A (en) * 1959-01-08 1962-12-11 Fmc Corp Rotary peeling cutter
US3069772A (en) * 1958-05-06 1962-12-25 Philips Corp Electric dry shaver head with changeable cutting heads of varying sharpness
US3088205A (en) * 1961-09-15 1963-05-07 Ellis Robert Dry shaver with hair pulling means to aid in cutting the hair
US3119180A (en) * 1961-12-20 1964-01-28 Bruecker John Shear plate and cutter assembly for rotary-type dry shaver
US3138870A (en) * 1962-03-26 1964-06-30 Joseph A Stachon Vacuum operated hair clipper
DE1185951B (en) * 1963-03-19 1965-01-21 Johannes Schaller Formation of the curved delimiting edges of holes in shaving foils for electric razors and a method for determining their contours
US3169317A (en) * 1961-08-16 1965-02-16 Braun Ag Screening or shearing foils for dry-shaving appliances
US3264733A (en) * 1964-07-17 1966-08-09 Philips Corp Dry-shaving apparatus having a shaving head which is partly constructed for use as a hair-clipper
US3382580A (en) * 1964-12-07 1968-05-14 Carinthia Elektrogerate Ges M Perforated cutter foil for dry shavers
US3594837A (en) * 1968-06-19 1971-07-27 Sulby Eng Dev Book binding machinery
USD247186S (en) 1974-07-04 1978-02-07 Matsushita Electric Works, Ltd. Outer blade for electric shaver
US4635360A (en) * 1984-05-23 1987-01-13 Matsushita Electric Works, Ltd. Cutting head for an electric shaver
EP0544065A1 (en) * 1991-11-26 1993-06-02 Matsushita Electric Works, Ltd. Rotary dry shaver
US5408749A (en) * 1993-02-12 1995-04-25 Izumi Products Company Electric razor
US5829140A (en) * 1997-02-21 1998-11-03 Dolev; Moshe Electric shaver
USD405921S (en) 1993-06-11 1999-02-16 Izumi Products Company Cutter for electric shaver
CN1044986C (en) * 1993-03-18 1999-09-08 褚新栋 Electric shaver
US20060042100A1 (en) * 2004-09-02 2006-03-02 Rayovac Corporation Shaving head for rotary shaver and method of manufacturing the same
US20060179659A1 (en) * 2005-02-14 2006-08-17 Izumi Products Company Rotary type electric shaver
US20060179660A1 (en) * 2005-02-14 2006-08-17 Izumi Products Company Rotary type electric shaver
US20080028618A1 (en) * 2006-08-04 2008-02-07 Izumi Products Company Inner cutter for a rotary shaver and a rotary shaver using the same
US20090019703A1 (en) * 2004-11-01 2009-01-22 Koninklijke Philips Electronics N.V. Cutter unit for a rotary shaver, method for making such a unit and rotary shaver provided therewith
US20090025228A1 (en) * 2004-11-01 2009-01-29 Koninklijke Philips Electronics N.V. Inner cutter with cutter blades at different radii, method for manufacturing such unit, shaver head and rotary shaver provided therewith
US20090133265A1 (en) * 2005-07-29 2009-05-28 Braun Gmbh Shaving Head for an Electric Shaver
US20120110854A1 (en) * 2010-11-08 2012-05-10 Izumi Products Company Rotary electric shaver
US20150040403A1 (en) * 2012-01-10 2015-02-12 Koninklijke Philips N.V. Rotary shaving unit
US20150343652A1 (en) * 2014-05-30 2015-12-03 Izumi Products Company Rotary electric shaver
US20160089799A1 (en) * 2014-09-30 2016-03-31 Izumi Products Company Rotary electric shaver
US10357889B2 (en) * 2015-02-24 2019-07-23 Izumi Products Company Inner blade of rotary electric shaver
EP3647002A1 (en) * 2018-11-05 2020-05-06 Koninklijke Philips N.V. A cutting unit for a shaving apparatus comprising a hair transporting fan structure
US10987819B2 (en) * 2018-06-01 2021-04-27 Haining Xinyi Machinery Electrical Co., Ltd. Grille for hair shaver
US11272772B2 (en) 2016-05-16 2022-03-15 Spectrum Brands, Inc. Heated hair setter apparatus and method
US20240139979A1 (en) * 2021-04-23 2024-05-02 Zhejiang Zhibo Electrical Appliance Technology Co., Ltd. Shaver head assembly and shaver
US12251845B2 (en) * 2019-03-20 2025-03-18 Koninklijke Philips N.V. Hair-cutting unit for a shaving device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283865A (en) * 1938-06-10 1942-05-19 Casco Products Corp Shaving machine
US2375521A (en) * 1938-08-11 1945-05-08 Gardner W Pearson Power razor
US2387756A (en) * 1944-09-11 1945-10-30 Carsten L Henningsen Electric razor
US2616168A (en) * 1942-03-18 1952-11-04 Hartford Nat Bank & Trust Co Cutting head for dry shavers
US2659139A (en) * 1951-05-17 1953-11-17 Gordon W Davison Electrical dry shaver
US2720696A (en) * 1954-01-29 1955-10-18 Sanford I Wadsworth Electric shaver

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2283865A (en) * 1938-06-10 1942-05-19 Casco Products Corp Shaving machine
US2375521A (en) * 1938-08-11 1945-05-08 Gardner W Pearson Power razor
US2616168A (en) * 1942-03-18 1952-11-04 Hartford Nat Bank & Trust Co Cutting head for dry shavers
US2387756A (en) * 1944-09-11 1945-10-30 Carsten L Henningsen Electric razor
US2659139A (en) * 1951-05-17 1953-11-17 Gordon W Davison Electrical dry shaver
US2720696A (en) * 1954-01-29 1955-10-18 Sanford I Wadsworth Electric shaver

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982021A (en) * 1957-08-05 1961-05-02 Anthony P Miller Cutting head for a dry shaver
US3069772A (en) * 1958-05-06 1962-12-25 Philips Corp Electric dry shaver head with changeable cutting heads of varying sharpness
US2916821A (en) * 1958-10-08 1959-12-15 John M Witmer Rotary dry shaver with waste collecting means
US3067791A (en) * 1959-01-08 1962-12-11 Fmc Corp Rotary peeling cutter
US3019525A (en) * 1960-06-29 1962-02-06 Bruecker John Shear plate and cutter assembly for rotary type dry shaver
US3169317A (en) * 1961-08-16 1965-02-16 Braun Ag Screening or shearing foils for dry-shaving appliances
US3088205A (en) * 1961-09-15 1963-05-07 Ellis Robert Dry shaver with hair pulling means to aid in cutting the hair
US3119180A (en) * 1961-12-20 1964-01-28 Bruecker John Shear plate and cutter assembly for rotary-type dry shaver
US3138870A (en) * 1962-03-26 1964-06-30 Joseph A Stachon Vacuum operated hair clipper
DE1185951B (en) * 1963-03-19 1965-01-21 Johannes Schaller Formation of the curved delimiting edges of holes in shaving foils for electric razors and a method for determining their contours
US3264733A (en) * 1964-07-17 1966-08-09 Philips Corp Dry-shaving apparatus having a shaving head which is partly constructed for use as a hair-clipper
US3382580A (en) * 1964-12-07 1968-05-14 Carinthia Elektrogerate Ges M Perforated cutter foil for dry shavers
US3594837A (en) * 1968-06-19 1971-07-27 Sulby Eng Dev Book binding machinery
USD247186S (en) 1974-07-04 1978-02-07 Matsushita Electric Works, Ltd. Outer blade for electric shaver
US4635360A (en) * 1984-05-23 1987-01-13 Matsushita Electric Works, Ltd. Cutting head for an electric shaver
EP0544065A1 (en) * 1991-11-26 1993-06-02 Matsushita Electric Works, Ltd. Rotary dry shaver
US5283953A (en) * 1991-11-26 1994-02-08 Matsushita Electric Works, Ltd. Rotary dry shaver
US5408749A (en) * 1993-02-12 1995-04-25 Izumi Products Company Electric razor
CN1044986C (en) * 1993-03-18 1999-09-08 褚新栋 Electric shaver
USD405921S (en) 1993-06-11 1999-02-16 Izumi Products Company Cutter for electric shaver
US5829140A (en) * 1997-02-21 1998-11-03 Dolev; Moshe Electric shaver
US20060042100A1 (en) * 2004-09-02 2006-03-02 Rayovac Corporation Shaving head for rotary shaver and method of manufacturing the same
US8037613B2 (en) * 2004-09-02 2011-10-18 Rovcal, Inc. Shaving head for rotary shaver and method of manufacturing the same
US8307740B2 (en) * 2004-11-01 2012-11-13 Koninklijke Philips Electronics N.V. Cutter unit for a rotary shaver, method for making such a unit and rotary shaver provided therewith
US8245404B2 (en) * 2004-11-01 2012-08-21 Koninklijke Philips Electronics N.A. Inner cutter with cutter blades at different radii, method for manufacturing such unit, shaver head and rotary shaver provided therewith
US20090019703A1 (en) * 2004-11-01 2009-01-22 Koninklijke Philips Electronics N.V. Cutter unit for a rotary shaver, method for making such a unit and rotary shaver provided therewith
US20090025228A1 (en) * 2004-11-01 2009-01-29 Koninklijke Philips Electronics N.V. Inner cutter with cutter blades at different radii, method for manufacturing such unit, shaver head and rotary shaver provided therewith
US7356929B2 (en) * 2005-02-14 2008-04-15 Izumi Products Company Rotary type electric shaver
US7540090B2 (en) 2005-02-14 2009-06-02 Izumi Products Company Rotary type electric shaver
US20060179660A1 (en) * 2005-02-14 2006-08-17 Izumi Products Company Rotary type electric shaver
US20060179659A1 (en) * 2005-02-14 2006-08-17 Izumi Products Company Rotary type electric shaver
US20080148573A1 (en) * 2005-02-14 2008-06-26 Izumi Products Company Rotary type electric shaver
US20090133265A1 (en) * 2005-07-29 2009-05-28 Braun Gmbh Shaving Head for an Electric Shaver
US8082670B2 (en) * 2005-07-29 2011-12-27 Braun Gmbh Shaving head for an electric shaver
US20080028618A1 (en) * 2006-08-04 2008-02-07 Izumi Products Company Inner cutter for a rotary shaver and a rotary shaver using the same
US8434233B2 (en) * 2006-08-04 2013-05-07 Izumi Products Company Inner cutter for a rotary shaver and a rotary shaver using the same
US20120110854A1 (en) * 2010-11-08 2012-05-10 Izumi Products Company Rotary electric shaver
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