Rotary type electric razor

Details Rotary type electric razor Rotary type electric razor

1990-03-05

1991-05-14

Watts, Douglas D.

Cutlery

Razors

With cooperating shearing blades

30 43, 30 435, B26B 1914, B26B 1920, B26B 2916

Patent

active

050144286

ABSTRACT:
The present invention is directed to a rotary type electric razor which includes an arch-shaped external cutting edge detachably mounted on an upper side of a main body case, an internal cutting edge driving unit supported for free vertical movement with respect to the main body case, and a motor speed detecting means provided within the main body case. The internal cutting edge driving unit comprises a rotary internal cutting edge which rotates in sliding contact with respect to the internal face of the external cutting edge, an internal cutting edge driving chassis for rotatably supporting the rotary internal cutting edge, a motor mounted on the internal cutting edge driving chassis, and a drive transmitting means for transmitting the output of the motor to the rotary internal cutting edge. The motor speed detecting means comprises a rotary member mounted to the output shaft of the motor, and a photosensor opposite the rotary member.

REFERENCES:
patent: 2242405 (1941-05-01), Sussman
patent: 4043036 (1977-08-01), Stevens, Sr. et al.
patent: 4531287 (1985-07-01), Shibata
patent: 4606122 (1986-08-01), Ullmann et al.
patent: 4675997 (1987-06-01), Nakagawa
patent: 4707915 (1987-11-01), Bakker et al.
patent: 4811484 (1989-03-01), Wijma et al.
patent: 4894912 (1990-01-01), Tietjens

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