Push-button tuner

Details Push-button tuner Push-button tuner

1984-10-15

1987-01-13

Herrmann, Allan D.

Machine element or mechanism

Shaft operators

Preselected position

334 7, H03J 512

Patent

active

046354905

ABSTRACT:
Disclosed is a push-button tuner in which two desired preset broadcasting frequencies can be tuned in by one push-button. The push-button tuner comprises a plurality of tuning mechanisms each constituted by an operation shaft, and a pair of tuning shafts disposed on the opposite sides of the operation shaft. These operation shaft and tuning shafts are supported movably between the front non-actuation position and the rear actuation position, the operating shaft being provided with a drive gear, a change-over mechanism for alternatively alternately causing the pair of tuning pieces to move relative to the operation shaft to the rear actuation position every one reciprocation of the operation shaft between the front non-actuation position and the rear actuation position, and an enlarging mechanism for enlarging the amount of moving stroke of the operation shaft member and for transmitting the enlarged amount of moving stroke to one of the tuning member which is in its movable state. Each of the tuning shafts includes a driven gear which engages with the drive gear when the tuning shaft is moved to the front non-actuation position, and a tuning piece which is axially movable in response to the rotation of the tuning shaft. The tuning piece selects the frequency of the variable element in response to the axial movement of the tuning shaft.

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