Push-button tuner

Details Push-button tuner Push-button tuner

1984-10-15

1986-09-09

Herrmann, Allan D.

Machine element or mechanism

Shaft operators

Preselected position

334 7, H03J 512

Patent

active

046101730

ABSTRACT:
A push-button tuner in which two desired preset broadcasting station frequencies can be selectively tuned in by one push-button comprises a plurality of tuning mechanisms, each of which comprises an operation shaft having a push-button, a pair of tuning shafts respectively disposed on the opposite sides of the operation shaft, and a change-over mechanism for effecting a change-over operation so as to cause the operation member to engage with alternate ones of the pair tuning members in response to alternate reciprocations of the operation member. The push-button tuner comprises a lock plate for holding the tuning shaft in the rear actuation position when it is located in the rear actuation position, and a restriction device for preventing the operation shaft from being urged further rearward when the tuning shaft is held by the lock plate thereby preventing excessive force from being applied to the change-over mechanism.

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