Matsushita Electric Works, Ltd.

Shinsaku Yasunaka

Masao Matsumoto

Kenzo Shirakawa

Hideharu Nakano

Toshio Tanabe

Keizo Ganse

Norio Yamada

Masami Kitamura

Hisao Nakagawa

Masato Morita

A dry shaver has a trimmer plate with a trimmer cutter at its upper end. The trimmer plate is slidably mounted on a vertically elongated front face of a shaver housing with the trimmer cutter projecting forwardly of the housing. The trimmer plate is pivotally connected at its lower end to a slider handle also slidable on the front face such that the trimmer plate is vertically movable together therewith along the front face between a lower inoperative position where it is kept lain flat against the front face and an upper operative position where it is pivoted into an inclined condition with respect to the front face so as to project the trimmer cutter forwardly by a greater distance from the front face than at the lower inoperative position. An improvement resides in that the trimmer plate is allowed to pivot towards the front face of the housing when it is in the upper operative position and is spring-biased into the inclined condition so that the trimmer plate can be retracted towards the shaver housing against the spring-bias while urging the trimmer cutter into intimate and constant contact with the skin for increased convenience of cutting the hairs.

Dry shaver with a trimmer

An electric shaver has a shaving head and a trimmer handle mounting at its top a trimmer block. The trimmer handle is in the form of a flat plate slidably attached to a flat surface on the outer wall of a shaver housing for vertical movement between an inoperative position and an operative position. Formed in the inner surface of the flat plate trimmer handle is a shallow recess within which is located a trimmer drive interconnecting the trimmer block and a main drive element for the shaving head in order to drive the trimmer block from the same source as the shaving head. The trimmer block includes a stationary blade and a movable blade which define therebetween a cutting plane in parallel relation to the plane of the trimmer handle. This arrangement is to reduce the dimension of the trimmer block and the thickness of the trimmer handle. This enables the trimmer drive to be received within the thickness of the shallow recess, to greatly reduce the total thickness of the trimmer handle including the trimmer block, and therefore adding only limited thickness to the entire shaver assembly. Thus, the shaver with the trimmer handle can be made in flat configuration that is easy to handle and transport as well as to provide an aesthetic appeal by its reduced thickness.

Dry shaver with a slidable trimmer handle

A dynamically balanced apparatus having a reciprocating member includes an eccentric shaft operatively connected to a motor output shaft, and a drive member operatively connecting the eccentric shaft to the reciprocating member for driving the reciprocating member upon rotation of the eccentric shaft. An eccentric flyweight is mounted on the output shaft to be rotatable therewith for canceling the vibration or inertia force developed by the motion of the reciprocating member. Also included in the apparatus is a vibrator also driven by the eccentric shaft to vibrate in a direction perpendicular to the reciprocating direction. For eliminating the vibration inherently arising from the rotation of the eccentric shaft and acting in the direction perpendicular to the reciprocating direction, at least one counterweight is carried on the vibrator to be movable therewith for canceling such inherent vibration in the direction questioned. A novel feature of the present invention resides in that the counterweight is disposed at a location spaced longitudinally outwardly of the drive member to be in substantially longitudinal alignment with the drive member and the eccentric flyweight. Consequently, the counterweight can be conveniently received in longitudinal end of the apparatus housing without requiring any additional space on the lateral side of the apparatus housing, while providing dynamic balancing of all moving parts to effectively cancel unpleasant vibrations in all directions.

Dynamically balanced apparatus having reciprocating member

Chargeable electric instrument of watertight housing capable of still discharging abnormally generated gas or liquid from built-in storage battery. The instrument includes a gas discharging valve means provided at an open end of a storage-battery casing, a cap means fixed to the casing for liquid-tightly enclosing the open end and valve means, a charge current feeding means provided in an end part of the housing, and a gas or liquid flow-path means made through the cap means and housing while preventing an entry of any fluid from the exterior, whereby any explosive gas internally generated can be effectively discharged through the valve, cap and flow-path means to the exterior.

Chargeable electric instrument

Pump driving mechanism

An electric shaver of a reciprocating drive type having a trimmer blade comprises a housing and an outer blade frame detachably mounted onto the upper portion of the housing. A trimmer blade assembly is mounted to the housing so as to be protrusile outward of the housing. A switch plate is provided on the housing so that three stop positions may be selectively assumed, in which the third position is allotted to enable the trimmer blade assembly to be protruded in cooperation with a trimmer lever, while a driving force is afforded to both the main blade and the trimmer blade assembly. A cleaning operation portion is further provided on the housing so that the same may be operated independently of the switch plate. The cleaning operation portion acts on the trimmer lever to enable the trimmer blade assembly to be protruded outward, with the same in an intact state of not being driven by a motor. The outer blade frame can be removed from the housing at the same time in response to the operation of the cleaning operation portion.

Growing community of inventors

Hikone, Japan

Shinsaku Yasunaka