US3903597A - Dry shavers - Google Patents

Dry shavers Download PDF

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Publication number
US3903597A
US3903597A US414767A US41476773A US3903597A US 3903597 A US3903597 A US 3903597A US 414767 A US414767 A US 414767A US 41476773 A US41476773 A US 41476773A US 3903597 A US3903597 A US 3903597A
Authority
US
United States
Prior art keywords
dry shaver
screen
reciprocable
suspending
coupled
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
US414767A
Other languages
English (en)
Inventor
Claus Christian Cobarg
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Application granted granted Critical
Publication of US3903597A publication Critical patent/US3903597A/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
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/282—Motors without a rotating central drive shaft, e.g. linear motors
    • 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
    • B26B19/26—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the type performing different methods of operation simultaneously, e.g. reciprocating and oscillating; of the type having two or more heads of differing mode of operation
    • 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
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive

Definitions

  • a re ciprocable cutter head is arranged which is in driving [52] 30/4331; 30/219 connection with a motor that is also housed in said in- [5 l] B26B 19/02 terior.
  • said cutter head at least one biasing [58] held of Search 30/4391 roller is arranged for urging said cutting foil in inti- 30/42 34651 mate contact with said cutter head.
  • the motor has its shaft parallel to a generatrix of the surface of said cut' ⁇ 56] References cued ting foil, and the shaft ends of the motor each carry 21 UNITED STATES PATENTS cam disc, each of which is cooperating with a coordi 2,302,941 11/1942 Frey 30/4392 nated reciprocable arm, which arms extend normally 2318351 5/1943 Alexayu to the shaft of said motor and are coupled at their 2,363,849 H944 Bailey 1 1 1 1 1 30/4192 X freely movable end to the Cutter hflad 2,526,l53 10/]950 Page ,1 30/46 X 2,802,261 8/1957 Heyek 1.
  • the invention relates to a dry shaver of the kind which includes a cutting screen or foil for example of a cylindrical surface configuration, a reciprocable cutter head or shearing head coupled to a drive means and biasing rollers arranged opposite to the cutter head.
  • An object of the invention is the provision of a dry shaver of the above kind which is compactly designed, requires only a few components and is such as to permit counter balancing of the masses of the various moving parts.
  • the drive means comprises a drive motor which is arranged in the interior or space within the cutting foil between the cutter head and the biasing rollers, its shaft being parallel to a generatrix of the surface of the cutting foil, the motor being fastened to a means carrying the biasing rollers. and two parallel and reciprocable arms being provided which extend normally to the shaft of the motor, each arm being coupled at one end to the cutter head, and a cam disc being positioned on the shaft, the disc being in contact with the associated reciprocable arm.
  • the energy of the drive motor is transferred by means of the cam disc directly to one of the reciprocable arms without additional components being necessary,
  • the reciprocable arms also serve as a supporting device for the cutter head.
  • the drive motor is housed in the space within the cutting foil, thus enabling a compact design.
  • the movable ends of the reciprocating arms may be connected to a rod or beam, to which the cutter head is coupled.
  • the drive motor is supported resiliently in an axial direction such as to obtain counter balancing of the masses of all moving parts of the dry shaver.
  • FIG. 1 is an axial sectional view of the main parts of a dry shaver according to the invention.
  • FIG. 2 is a sectional view of the shaver in the direction of the arrows lI-II in FIG. 1 without the casing shown DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • the dry shaver includes a drive motor I which is fixed relative to the casing of thc shaver and is housed in the space within a cutting foil 2 which is of a cylindrical surface configuration.
  • cam disc 3 and 3a are pro- (ill vidcd, which have projecting cam formations which, in a side clcvational view, are shaped like a sine wave.
  • On either side of the drive motor I reciprocating arms 4 and 5, respectively.
  • each of the reciprocating arms 4 and 5 adjacent cam disc 3 and 3a, respectively, is fitted with a stud 8 and 8a, respectively, made of a wear-resistant material and being in sliding contact with the coordinated cam disc.
  • a connecting pin 9 is fastened in the centre of beam 7 which pin is protruding towards the cutting foil and is surrounded by a compression spring 10.
  • the connecting pin 9 engages in a recess provided in the body of a cutter head 11, resulting in coupling the cutter head for reciprocable movement to beam 7.
  • the compression spring 10 is dimensioned to bias said cutter head 11 towards the cutting foil 2.
  • a roller 12 is provided which is supported in bearings by the casing and around which the foil is entrained.
  • the roller 12 is provided with grooves 13 which prevent shaved beard-stubbles from blocking movement of the cutter head.
  • the L-shaped bracket or cantilever 6 is mounted about a pivotal axis 14 on the casing of the dry shaver whereby the mass forces of the moving parts are counter-balanced.
  • the oscillating arms 4 and 5 are resilient parts, for example leaf springs, and are in intimate contact with cam disc 3 and 3a, respectively, to maintain associated stud 8 or 81:, respectively, in permanent contact with the associated cam disc.
  • any other similarly operating transmission device may be employed instead of the cam discs.
  • the drive shaft f.i. may be fitted with one instead of two cam discs.
  • biasing roller 10 a plurality of biasing rollers in parallel arrangement may be provided, the axes of these being situated on a cylinder surface.
  • the coupling between the cutter head and the reciprocating arms may be modified in various ways and the motor may be resiliently supported in an axial direction so as to counter-balance the masses of all moving parts of the dry shaver.
  • the cutting foil 2 is supported to be freely rotatable and maintained in an open loop, over the roller I2 and the cutter head II which are biased outwardly against the cutting foil 2 by the action of compression spring 10 as shown in FIG. 2. i.e. the foil functions as a movable endless belt which, during shaving, rides along the skin. Thus, a comfortable shave is achieved.
  • the foil 2 is, however, prevented from movement in a direction ofthe axis of the motor drive shaft, i.e., it is constrained against transverse movements.
  • a first member including a rotatable, endless, flexible belt-type perforated cutting screen
  • a second member including a shearing head positioned in operative contact with at least a portion of said screen
  • suspending means operable for suspending the screen rotatably
  • said suspending means comprising a roller means in cluding at least one roller and being operable. in combination with said second member, for maintaining said cutting screen in a circumferentially extended position by suspending the screen noncircularly;
  • reciprocating means operable for reciprocably moving one of said members relative to the other a holding means
  • roller means being pivotally suspended from said holding means
  • said holding means including a cantilever operable for pivotally securing said holding means to said casing.
  • a dry shaver according to claim I wherein said cantilever is pivotally attached to the casing at right angles to the shaft of the motor.
  • suspending means operable for suspending the screen rotatably
  • a shearing head positioned in operative contact with at least a portion of said screen
  • reciprocating means comprising a drive motor surrounded by said screen having a shaft the axis of which is substantially parallel to the axis of said screen and cam and cam follower means driven from said motor;
  • cam follower being operably coupled to said shearing head whereby reciprocating motion is transmitted from said reciprocating means to said shearing head.
  • said cam follower means including a first member comprising at least one reciprocable arm.
  • said first member comprising two substantially parallel recipro' cable arms each coupled to said second member and two cams each corresponding to one of said arms.
  • said second member further comprises a beam, said shearing head being coupled to said beam and said reciprocable arm being coupled to said beam.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US414767A 1972-11-15 1973-11-12 Dry shavers Expired - Lifetime US3903597A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT971972A AT323017B (de) 1972-11-15 1972-11-15 Trockenrasierer mit drehbeweglicher, mantelförmiger scherfolie

Publications (1)

Publication Number Publication Date
US3903597A true US3903597A (en) 1975-09-09

Family

ID=3616641

Family Applications (1)

Application Number Title Priority Date Filing Date
US414767A Expired - Lifetime US3903597A (en) 1972-11-15 1973-11-12 Dry shavers

Country Status (9)

Country Link
US (1) US3903597A (de)
JP (1) JPS4981168A (de)
AT (1) AT323017B (de)
CH (1) CH568133A5 (de)
DE (1) DE2356073A1 (de)
ES (1) ES420529A1 (de)
FR (1) FR2206157B1 (de)
NL (1) NL7315666A (de)
SU (1) SU480211A3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167060A (en) * 1976-11-15 1979-09-11 Matsushita Electric Works, Ltd. Electric shaver
US4395821A (en) * 1980-08-23 1983-08-02 Braun Aktiengesellschaft Device having a long-hair cutting unit
US4675998A (en) * 1984-10-09 1987-06-30 U.S. Philips Corporation Dry-shaving apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931479A1 (de) * 1979-08-02 1981-02-19 Guenter Rochelt Schwingkoerper zur umwandlung einer drehbewegung in eine hin- und hergehende bewegung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302941A (en) * 1939-07-14 1942-11-24 Samuel Gorad Shaving device
US2318351A (en) * 1942-12-16 1943-05-04 Gen Electric Shaver
US2363849A (en) * 1943-02-18 1944-11-28 Bailey Theodore Dry shaver
US2526153A (en) * 1946-11-20 1950-10-17 Herbert E Page Multihead dry shaver
US2802261A (en) * 1954-02-26 1957-08-13 Heyek Gerhard Dry-shaving apparatus with a flexible shear plate
US3037281A (en) * 1959-07-31 1962-06-05 Walter J Hurd Razor with fixed cutting means within a rotatable, foraminous, resiliently yieldable sleeve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2302941A (en) * 1939-07-14 1942-11-24 Samuel Gorad Shaving device
US2318351A (en) * 1942-12-16 1943-05-04 Gen Electric Shaver
US2363849A (en) * 1943-02-18 1944-11-28 Bailey Theodore Dry shaver
US2526153A (en) * 1946-11-20 1950-10-17 Herbert E Page Multihead dry shaver
US2802261A (en) * 1954-02-26 1957-08-13 Heyek Gerhard Dry-shaving apparatus with a flexible shear plate
US3037281A (en) * 1959-07-31 1962-06-05 Walter J Hurd Razor with fixed cutting means within a rotatable, foraminous, resiliently yieldable sleeve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167060A (en) * 1976-11-15 1979-09-11 Matsushita Electric Works, Ltd. Electric shaver
US4395821A (en) * 1980-08-23 1983-08-02 Braun Aktiengesellschaft Device having a long-hair cutting unit
US4675998A (en) * 1984-10-09 1987-06-30 U.S. Philips Corporation Dry-shaving apparatus

Also Published As

Publication number Publication date
ES420529A1 (es) 1976-05-01
SU480211A3 (ru) 1975-08-05
DE2356073A1 (de) 1974-05-22
NL7315666A (de) 1974-05-17
JPS4981168A (de) 1974-08-05
FR2206157B1 (de) 1975-03-21
FR2206157A1 (de) 1974-06-07
CH568133A5 (de) 1975-10-31
AT323017B (de) 1975-06-25

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