Keyboard for the preselection of electromagnetic signals

Details Keyboard for the preselection of electromagnetic signals Keyboard for the preselection of electromagnetic signals

1976-10-12

1978-10-17

Croyle, Carlton R.

Machine element or mechanism

Shaft operators

Preselected position

F16H 3518, H03J 508

Patent

active

041202074

ABSTRACT:
A pushbutton tuner is disclosed in which each pushbutton key can exert an equal force against a slidable tuning element in response to actuation of the key. A link means engages each key during actuation of the key and fixedly positions the key with respect to the tuner frame while a locked adjustable element on the fixed key contacts the slidable tuning element through an elbow lever to position the tuning element.

REFERENCES:
patent: 2863043 (1958-12-01), Schmidt et al.
patent: 2898767 (1959-08-01), Teaf
patent: 3602051 (1971-08-01), Olah
patent: 3657932 (1972-04-01), Walsh
patent: 3863509 (1975-02-01), Zimatore et al.
patent: 4030052 (1977-06-01), Pelletier

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