Push-button mechanisms and equipment including them

Details Push-button mechanisms and equipment including them Push-button mechanisms and equipment including them

1977-04-21

1979-03-13

Gensler, Paul L.

Tuners

Push button and/or lever-type mechanically operated tuner

74 1027, 74 1039, 200 18, 334 74, H03J 532

Patent

active

041445112

ABSTRACT:
A push-button mechanism for tuning a radio receiver includes push-buttons that are actuable to rotate a turrent tuner to different extents for station selection. The side of each push-button contacts one end of an individual lever to pivot it through a predetermined angle upon actuation of the push-button. The other end of the lever contacts one of several projections on a bar which extends transversely of the push-buttons and which is coupled via rack and pinion gearing to the drum of the turret tuner. The levers of the different push-buttons have different orientations with respect to the bar so that although each lever is pivoted through the same angle, longitudinal displacement of the bar effected, and hence the setting of the turret tuner, depends upon which push-button is actuated. Upon actuation of a push-button, the bar is locked in its displaced position by means of a leaf spring, and the drum is then locked in position by means of a projection that engages in one of several notches in the drum. The mechanism has a shuttle that is coupled to a wave-band switch for switching the radio receiver between long-wave and medium-wave bands appropriate to the push-button actuated.

REFERENCES:
patent: 1489580 (1924-04-01), Lucey
patent: 2296060 (1942-09-01), Schwarz et al.
patent: 2356935 (1944-08-01), Koch
patent: 2521968 (1950-09-01), De Tar et al.
patent: 3487702 (1970-01-01), Hosch et al.
patent: 3602051 (1971-08-01), Olah

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