EP0266080A1 - Elektrischer Rasierapparat - Google Patents

Elektrischer Rasierapparat Download PDF

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Publication number
EP0266080A1
EP0266080A1 EP87308899A EP87308899A EP0266080A1 EP 0266080 A1 EP0266080 A1 EP 0266080A1 EP 87308899 A EP87308899 A EP 87308899A EP 87308899 A EP87308899 A EP 87308899A EP 0266080 A1 EP0266080 A1 EP 0266080A1
Authority
EP
European Patent Office
Prior art keywords
razor
handle
housing
electric
motor
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.)
Withdrawn
Application number
EP87308899A
Other languages
English (en)
French (fr)
Inventor
Ben-Tsion Kats
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.)
KATS BEN TSION
Original Assignee
KATS BEN TSION
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 KATS BEN TSION filed Critical KATS BEN TSION
Publication of EP0266080A1 publication Critical patent/EP0266080A1/de
Withdrawn legal-status Critical Current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
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/38—Safety razors with one or more blades arranged transversely to the handle with provision for reciprocating the blade by means other than rollers

Definitions

  • the present invention concerns an electric razor, specifically, an electric razor designed for wet shaving using standard commercially available razor blades.
  • wet shaving is known to be the best way to obtain a close shave.
  • the use of water and particularly soap lather helps line up the hair so that the razor blade can cut it very close to the face.
  • Many devices have been introduced to make such shaving more comfortable, convenient, easier and safer. In general such devices comprise a handle to which an expendable razor blade can be affixed.
  • Recently razor blades have been developed which are relatively safe and cause minimum of nicks and cuts. These usually are contained within a frame or cartridge wherein the entire cartridge is snapped into a handle.
  • Electric shavers are also known of course, and these are used generally for dry shaving, which means that no water or lather is used on the face.
  • Such Electric Shavers generally work on the same principle as scissors, wherein the hair on the face is cut between two blades, one blade moving across the other.
  • Another object of the invention is to provide an electric razor which gives superior shaves in terms of speed, closeness, comfort and safety.
  • Yet another objective of this invention is to provide a method of wet shaving with an ordinary razor blade wherein said razor blade is vibrated at high speeds.
  • the electric razor 1 has an outside appearance of a rectangular shaped cylinder with rounded edges 2 which partially taper 3 towards one end 4.
  • Handle 5 comprising a bend 6 of about 120° protrudes from the body 1 at the tapered end 4 and is surrounded with a watertight flexible rubber collar 12 which is shown enlarged in figure 7.
  • the handle 5 is attached pivotally within the body 1 by pin 7 so that it can pivot around pin 7.
  • a razor blade 8 which can be detached readily by activating spring lever 9. Electric current enters the body via receptacle 10 and the power to the apparatus is turned on and off by means of switch 11.
  • Handle 5 has the general shape of a conventional razor handle and is positioned inside the body by means of pin 7 and hole 7a. From its curved neck upwards handle 5 is indeed identical with conventional razor handles. At its other end, handle 5 terminates in a hollow channel 13. Electric motor 14, when activated, turns rotor 15 which in turn rotates flywheel 16 which has an eccentric extension 17. The extension 17 fits into channel 13. When flywheel 16 rotates the eccentric extension 17 rotates off-center causing the handle to move back and forth, pivoting around pin 7. This back and forth motion of the handle at its lower end cause an up and up and down movement of the razor blade 8.
  • FIG. 5 shows more clearly the flywheel 16 and eccentric extension 17.
  • a hollow shaft 18 in the c enter of flywheel 16 is provided for tightly encasing a rotor 15 of motor 14. (Fig. 4).
  • Such a shaft 18 may be round or it may be hexagonal in shape, as shown in Fig. 5b, as long as the flywheel fits snugly over the rotor and does not slip during rotation.
  • the flywheel 16 and extension 17 are preferably one integral piece and may be fabricated from rigid plastics.
  • This flywheel 16 has a preferred diameter of about 20 mm and a thickness of about 4 mm.
  • the eccentric extension 17 is about 6 mm. high and has a diameter of about 6 mm. It is off-center about 2mm. Thus for each complete turn of the flywheel 16 of the extension 17 will rotate and deviate about 4 mm. in diameter. This deviation causes the handle 5 surrounding the extension 17 to rock back and forth in a vibrating motion.
  • Flywheel 16 has an off center extension 19 with respect to rotor shaft 20. This extension is encased in a ball bearing 21. An arm 22 extending from handle 5 is pivotally connected to the ball bearing 21 by pin 23. When the flywheel and extension 19 are rotated they cause the ball bearing 21 to move back and forth, thereby vibrating handle 5 around pin 7.
  • This type of vibrator means is more expensive than the one shown in figure 4, but it is quieter during operation and has a longer life.
  • Other vibrating means can also be used such as for example magnetic means etc.
  • FIG. 8a shows a handle having a head 24 for attaching razor blades 25
  • Fig. 8b shows a similar handle with a head 26 for flexible blades having the Gillette (TM) contour.
  • TM Gillette
  • the razor works as follows: When the handle 5 which is suspended pivotably near the neck 4 of the body 1 by pin 7 is moved in any direction at its lower end the other end of the handle and the razor blade 8 move in the opposite direction.
  • the distance the lower handle 5 moves is dependent on the eccentric extension on the wheel.
  • the amount that the razor blade 8 moves depends on the ratio of a) the distance between the bottom of the handle 5 and the axis of pin 7 and b) the distance between blades 8 and the axis of the pin 7.
  • the ratio in the figure 4 is about 5:3 but this is subject to change if one desires to increase or decrease the movement of the blades.
  • the electric motor 14 is turned on by switch 11 and rotates the rotor 15 at more than 10,000 r.p.m. The exact number of r.p.m. is determined by the voltage and load on the motor.
  • the motion of the razor is angular, back and forth on the axis of pin 7 but the actual movement of the blades which is obtained is closer to a straight line because of the short distance.
  • the motor for use in the present invention can be any electric motor capable of revolving a rotor.
  • Such a motor can be operated on line current or battery operated, when battery operated, it is preferably rechargeable, as is known in electric shavers. When line operated it must have a suitable adaptor for house current.
  • the inventors have successfully used a 12 volt DC electric motor which is readily available commercially having the following parameters: 28 mm. diameter, 38 mm. long, a rotor 12 mm. long and 2.5 mm. diameter. Furthermore, the motor may be battery operated and rechargeable, as is known in the art.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP87308899A 1986-10-07 1987-10-07 Elektrischer Rasierapparat Withdrawn EP0266080A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL80240A IL80240A0 (en) 1986-10-07 1986-10-07 Electric shaver
IL80240 1986-10-07

Publications (1)

Publication Number Publication Date
EP0266080A1 true EP0266080A1 (de) 1988-05-04

Family

ID=11057187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87308899A Withdrawn EP0266080A1 (de) 1986-10-07 1987-10-07 Elektrischer Rasierapparat

Country Status (2)

Country Link
EP (1) EP0266080A1 (de)
IL (1) IL80240A0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201375A1 (de) 2000-09-01 2002-05-02 Boehm, Hans-Georg, Dr. rer. nat. Gleitschuh für Ultraschall-Nassrasierapparate
WO2004078427A1 (en) * 2003-03-04 2004-09-16 S. C. Johnson & Son Inc. Vibratory shaver
WO2006042649A1 (en) * 2004-10-18 2006-04-27 The Gillette Company Powered safety razor systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793723A (en) * 1971-12-03 1974-02-26 Ultrasonic Systems Ultrasonic replaceable shaving head and razor
DE3444735A1 (de) * 1983-12-19 1985-06-27 Feather Safety Razor Co., Ltd., Seki, Gifu Rasierapparat

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793723A (en) * 1971-12-03 1974-02-26 Ultrasonic Systems Ultrasonic replaceable shaving head and razor
DE3444735A1 (de) * 1983-12-19 1985-06-27 Feather Safety Razor Co., Ltd., Seki, Gifu Rasierapparat

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201375A1 (de) 2000-09-01 2002-05-02 Boehm, Hans-Georg, Dr. rer. nat. Gleitschuh für Ultraschall-Nassrasierapparate
WO2004078427A1 (en) * 2003-03-04 2004-09-16 S. C. Johnson & Son Inc. Vibratory shaver
US7028405B2 (en) 2003-03-04 2006-04-18 S.C. Johnson & Son, Inc. Vibratory shaver
WO2006042649A1 (en) * 2004-10-18 2006-04-27 The Gillette Company Powered safety razor systems

Also Published As

Publication number Publication date
IL80240A0 (en) 1987-01-30

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