Matsushita Electric Works, Ltd.

Manabu Kawara

Toshio Ikuta

Masao Tanahashi

Yoshinobu Takegawa

Masao Matsumoto

Mitsuo Nakatani

Takashi Yoneda

A reciprocatory dry shaver is capable of providing a drive point of transmitting a reciprocating force to an inner cutter from a drive element at a location as close as to a cutting edge of the inner cutter for enhancing cutting performance, yet making the use of a plastic made drive element to give a detachable connection with the inner cutter. The shaver comprises a housing incorporating a drive source which is connected to move a drive element projecting on top of the housing. An outer cutter is supported to the top of the housing. An inner cutter is detachably connected to the drive element and is driven thereby to reciprocate in hair shearing engagement with the outer cutter. The drive element comprises a stud and a pin which projects beyond the upper end of the stud. The inner cutter is formed with a joint for detachable connection to the stud and with a catch for detachable connection to the pin. The catch is formed upwardly of the joint to define a drive point at the connection with the pin where the drive element transmits a driving force of reciprocating the inner cutter. With this arrangement, the driving point can be disposed closer to an upper cutting edge of the inner cutter than a connection point of detachably holding the inner cutter to the drive element. Consequently, a driving force is effectively applied for hair shaving between the reciprocating inner cutter and the outer cuter, thereby enhancing cutting performance.

Reciprocatory dry shaver

An improved hand-held motor-driven oscillating razor for wet shaving provides a substantially vibration-free gripping during the shaving. The razor comprises a grip housing adapted to be gripped by the hand of a user and a shaver head movably supported on top of the grip housing. The shaver head carries a razor blade element and includes a weight which is driven by a motor to impart oscillatory movement to the shaver head. The motor is mounted within the shaver head together with the weight so as to confine an oscillatory system within the shaver head. A damper member is utilized to singly support the shaver head to the grip housing in order to made the shaver head movable with respect to the grip housing such that the grip housing can be isolated substantially from the oscillatory system in the shaver head, permitting the shaver head to oscillate substantially indpendently of the grip housing, thereby minimizing a counter-vibration transmitted back to the grip housing from the shaver head. The damper member is preferably configured to exhibit different elasticity in differing directions in order to minimize the counter vibration which the user feels during the shaving, while assuring effective shaving.

Motor driven oscillating razor

Growing community of inventors

Otsu, Japan

Manabu Kawara