Accurate UHF television tuning system and method of fabricating

Details Accurate UHF television tuning system and method of fabricating Accurate UHF television tuning system and method of fabricating

1975-05-13

1977-07-26

Scott, Samuel

Machine element or mechanism

Shaft operators

Preselected position

74 1054, 334 84, 361298, F16h 3518

Patent

active

040374823

ABSTRACT:
A highly accurate UHF television tuner utilizes an improved housing and an improved mounting system for securing the tuning rotor and stator within the housing. The housing is fabricated from sheet metal that is welded at the corners to provide mechanical rigidity, and soldered at the corners to provide a good electrical contact. A cover is placed over an open end of the housing and soldered at the corners further to increase the mechanical rigidity of the housing. The depth of the housing is increased to reduce the effects of the housing on the tuner elements. An eyelet is mounted in one end of the housing for supporting the rotor shaft, and the stator is mounted by insulating posts that are inserted through sleeves integrally formed in the housing. An improved contact for more effectively grounding the rotor shaft to the housing is provided, and an improved detenting system is provided for the selector shaft to reduce the effects of inertial creep. An improved method is provided for mounting the rotor plates to the rotor shaft and for mounting the stator plates to the housing to improve the accuracy of alignment between the rotor and stator plates.

REFERENCES:
patent: 2594667 (1952-04-01), Lytle et al.
patent: 2751560 (1956-06-01), Brinker
patent: 3013231 (1961-12-01), Meadows et al.
patent: 3477299 (1969-11-01), Speer et al.
patent: 3702958 (1972-11-01), Reynolds
patent: 3739244 (1973-06-01), Tatsumi
patent: 3774459 (1973-11-01), Valdettaro

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