Fine tuning system having a limited user adjustable tuning range

Details Fine tuning system having a limited user adjustable tuning range Fine tuning system having a limited user adjustable tuning range

1974-10-24

1976-03-16

Smith, Alfred E.

Tuners

Combined

334 51, 334 57, 334 76, 334 89, H03J 106, H03J 510

Patent

active

039449521

ABSTRACT:
A limited tuning range tuning unit useable with a television tuner of the turret type includes a user tunable coil having a tuning slug extending from an end of the tuning unit. A pinion gear engageable by a drive train coupled to a user operated fine tuning shaft is attached to the end of the tuning slug. The pinion gear is provided with a stop tooth for limiting the adjustment range of the slug to approximately one revolution. In one embodiment, the slug is also longitudinally movable with respect to a coil in the coil unit to provide a factory adjustment for centering the tuning range available to the user. Alternatively, the factory adjustment may be provided by making the slug rotatable with respect to the pinion gear.

REFERENCES:
patent: 2604791 (1952-07-01), Daly
patent: 2995719 (1961-08-01), Osborn et al.
patent: 3182516 (1965-05-01), Rapata
patent: 3183726 (1965-05-01), Badger
patent: 3316770 (1967-05-01), Badger et al.

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