Television tuner

Details Television tuner Television tuner

1975-03-17

1976-11-30

Wyche, Benjamin W.

Machine element or mechanism

Shaft operators

Gear drive

64 1V, 74 1045, 334 50, 403383, F16H 3518

Patent

active

039941779

ABSTRACT:
A TV tuner has a housing and a rotating channel selector shaft mounted on the housing. There are a plurality of individual support members positioned by and mounted on parallel flatted areas of the shaft, which flatted areas vary in size to assure correct placement of the support members. Individual coil strips, each carrying a tuning screw, are fixed to the shaft assembly. A simplified clutching arrangement for controlling adjustment of the screws utilizes a coil spring to provide the initial force for moving a pinion gear into operating engagement with the tuning screws. The tuning screws are held by resilient arms which bias the head of the screws toward the shaft to thus firmly maintain the screws in any adjusted position. Each of the coil strips have contacts extending outwardly from one side and positioned to be in electrical and mechanical contact with cantilever spring members fastened to a printed circuit board which in turn is held by the housing.

REFERENCES:
patent: 2868982 (1959-01-01), Carlson
patent: 3240182 (1966-03-01), Keneny
patent: 3249902 (1966-05-01), Warthan et al.
patent: 3679252 (1972-07-01), Howle, Jr.
patent: 3875809 (1975-04-01), Lewkowicz

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