Pushbutton device for mechanical preselection tuning

Details Pushbutton device for mechanical preselection tuning Pushbutton device for mechanical preselection tuning

1975-01-07

1976-06-15

Chatmon, Jr., Saxfield

Tuners

Push button and/or lever-type mechanically operated tuner

74 1033, 334 74, H03J 506, H03J 508, H03J 532

Patent

active

039640000

ABSTRACT:
A pushbutton device for preselection tuning in radio receivers, having an adjusting member journalled to be rotatable in a frame of the receiver for engagement by preselection discs and for controlling tuning coils. A manual tuning knob is connected to the member by a slip coupling. The adjusting member forms, together with the slip coupling, a rotatable unit which consists of two portions which are separated by the slip coupling, each portion being supported in a bearing so as to require only a small preselection force.

REFERENCES:
patent: 3634791 (1972-01-01), Urawa-shi et al.
patent: 3635097 (1972-01-01), Mears, Jr.
patent: 3636776 (1972-01-01), Grandin
patent: 3648526 (1972-03-01), Repay
patent: 3832907 (1974-09-01), Yasuda

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