Norman Cappelle

US Patent:

39941779, Nov 30, 1976

Filed:

Mar 17, 1975

Appl. No.:

5/558729

Inventors:

Norman D. Cappelle - Arlington Heights IL
Walter Meyer - McHenry IL
Henry H. Tap - Cary IL

Assignee:

Oak Industries Inc. - Crystal Lake IL

International Classification:

F16H 3518

US Classification:

74 10R

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.