Machine element or mechanism – Shaft operators – Preselected position
Patent
1975-06-06
1977-05-03
Scott, Samuel
Machine element or mechanism
Shaft operators
Preselected position
74 1027, 74 1029, 74 1035, F16H 3518
Patent
active
040207048
ABSTRACT:
A pushbutton tuner for a radio receiver such as an auto radio has a pair of turn plates rotatable about axes and first and second link members extending between and pivotally connected to said first and second turn plates to form a link work. An auxiliary link member is pivotally connected to each of said first and second turn plates at a point coincident with the apex of a triangle having its bottom side formed by a line joining the points at which each turn plate is pivotally connected to said first and second link members. Pushbuttons are mounted on pushbutton stems which carry regulating segments which, when the pushbuttons are pushed, are urged against the first and second link members to move the same so that the first and second turn plates are rotated. Variable elements are operatively connected to the first and second turn plates and are movable relative to turning elements when the first and second turn plates are rotated whereby a tuned state is obtainable.
REFERENCES:
patent: 2318554 (1943-05-01), Raney
patent: 2319472 (1943-05-01), Plensler
patent: 2344091 (1944-03-01), Kirk
patent: 3602051 (1971-08-01), Olah
Heald Randall
Matsushita Electric - Industrial Co., Ltd.
Scott Samuel
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