Tuning control apparatus

Details Tuning control apparatus Tuning control apparatus

1975-02-25

1976-08-31

Chatmon, Jr., Saxfield

Tuners

With switching means

334 15, 334 86, H03J 500

Patent

active

039784380

ABSTRACT:
A frequency band selection switch and variable resistor assembly for one channel of a television tuner in which tuning is performed by varying a tuning voltage. A tuning shaft is connected to the slider of the variable resistor through a harmonic drive reduction gear assembly. A tuning scale is connected to the slider through a bored tuning scale shaft through which the tuning shaft coaxially extends. A bored switch shaft through which both the tuning and tuning scale shafts coaxially extend carries a movable contact of the band selection switch and a frequency band indicator. An assembly support member has a graduated dial associated with both the tuning scale and the frequency band indicator in a unitary manner.

REFERENCES:
patent: 3678421 (1972-07-01), Ono
patent: 3740679 (1973-06-01), Kimura et al.
patent: 3767112 (1973-10-01), Tonari
patent: 3769620 (1973-10-01), Kimura et al.
patent: 3811100 (1974-05-01), Schmidt
patent: 3824507 (1974-07-01), Speer et al.
patent: 3828285 (1974-08-01), Yokoyama et al.
patent: 3878466 (1975-04-01), Henrickson

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