Matsushita Electric Industrial Co., Ltd.

Itaru Mitsugi

Toshio Hayakawa

Shunzo Oka

Yoshinobu Nakagawa

Okihiko Nakano

Tatsuo Mitsui

Kenichi Shiho

In a push-on switch comprising a moving contact 6 of partial-hemisphere-face-shaped resilient metal diaphragm which is disposed with its periphery on a pair of peripheral fixed contacts 2b,2b in a contacting manner and at its central part apart above a central fixed contact 2a in an isolated manner at normal state,

Dust venting contact with a non-circular hole

This invention relates to a channel selector suitable for use in a television receiver set. The channel selector comprises a channel selecting shaft which is linked to a variable capacitor shaft through an Oldham coupler. A fine tuning shaft also is linked to the variable capacitor shaft through a coupler incorporating an incremental detent arrangement. Selection of a channel is made by turning the channel selection shaft to move the variable capacitor shaft by a suitable angle (for instance, about 2.degree.). When the channel selection shaft is turned by such an amount, the coupler slips so as to allow the variable capacitor shaft to turn independently of the fine tuning means. Once a channel is selected, fine tuning is made by slightly turning (for instance, within 0.3.degree.) the fine tuning shaft to correspondingly rotate the shaft of the variable capacitor. The channel selector also comprises means for memorizing the results of the fine adjustments for individual channels. The memory means includes several memory cams, each of which memorizes result of adjustment for several neighboring channels. By so designing the arrangement that each of the memory cams serves to memorize the fine tunings commonly for several channels, the memory means can be made compact and simple.

Channel selector

The present invention relates to a multiple push-switch apparatus comprising an exclusion mechanism which includes a plurality of slidably supported operation bodies and a flexible body, any one of said plurality of operation bodies being able to move by means of said flexible body, and a plurality of electric switches which are driven by said plurality of operation bodies, respectively. In addition, there is provided a multiple push-switch apparatus especially suitable as a station selecting apparatus for a television receiver. The apparatus can be operated by the use of a soft touch, permits the employment of various operation body arrangements, and prevents simultaneous operation of a plurality of electric switches by mistake.

Multiple push-switch apparatus having flexible element preventing

An acceleration sensing device comprising an electrically conductive annular conductive support ring, an electrically conductive sphere to be placed on the upper inner periphery of said support ring, and an electrically conductive contact disposed in the neighborhood of said ball, thereby the device being capable of detecting acceleration in any direction by the use of the electrical conduction between the support ring and the contact through the ball.

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Kadoma, Japan

Itaru Mitsugi