Keyboard for presetting the tuning of a radio receiving apparatu

Machine element or mechanism – Shaft operators – Preselected position

Patent

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Details

74 1033, 74 1035, 74 1037, F16H 3518

Patent

active

041332148

ABSTRACT:
A keyboard for presetting tuning of a radio receiving apparatus, comprising a tuning setting member manually operable for setting up the tuning for the reception of a plurality of transmitters, and a group of depressible keys each one associated with a tuning storing element for cooperating with said member in such a manner that in a first condition of the key said element is conditioned to store the tuning preset by said member and in a second condition of the key the element automatically sets up said member according to the stored tuning, wherein said element includes a wedge pivotally mounted with respect to the associated key, said member being provided, in correspondence with each one of said elements, with a pair of converging profiles adapted to cooperate directly with the associated wedge.

REFERENCES:
patent: 2213849 (1940-09-01), Robb
patent: 2217066 (1940-10-01), Manning
patent: 2253433 (1941-08-01), Kellogg
patent: 2424845 (1947-07-01), Plensler
patent: 3247728 (1966-04-01), Wolf
patent: 3412619 (1968-11-01), Pelletier
patent: 3602051 (1971-08-01), Olah
patent: 3863509 (1975-02-01), Zimatone
patent: 3943779 (1976-03-01), Ganderton

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