Fine adjusting mechanism for preset type tuner

Details Fine adjusting mechanism for preset type tuner Fine adjusting mechanism for preset type tuner

1983-12-12

1985-07-30

Gensler, Paul

Tuners

With switching means

Drum or cylinder-type turret tuner

74 108, 74384, 334 57, 464 30, H03J 528

Patent

active

045324859

ABSTRACT:
An improved fine adjusting mechanism for a preset type tuner, which is so arranged that, with a ring having cam portions being fitted under pressure onto a fine adjusting shaft of a tuner for simultaneous rotation with it and also for slippage with respect to the fine adjusting shaft against a torque larger than a predetermined extent, a lever having a transmission gear rotatably mounted on it is urged by a spring force so that its actuating projections are held in pressure contact with the cam surface of the ring with the cam portions, so that rotation of the fine adjusting shaft is converted into a pivotal movement of the lever through the ring so as to positively engage the transmission gear with each of gears having threaded portions for an efficient local oscillation frequency adjustment.

REFERENCES:
patent: 3248674 (1966-04-01), Fulton
patent: 4123781 (1978-10-01), Ito et al.
patent: 4152682 (1979-05-01), Ito et al.
patent: 4311056 (1982-01-01), Tanida
patent: 4429291 (1984-01-01), Tenjin

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