Machine element or mechanism – Shaft operators – Preselected position
Patent
1978-11-07
1981-02-03
Herrmann, Allan D.
Machine element or mechanism
Shaft operators
Preselected position
334 7, H03J 106
Patent
active
042481023
ABSTRACT:
A push button type tuning apparatus comprising a plurality of push buttons adapted to be pressed at the time of preset tuning and retuning operations, memory plates provided rotatably with respect to each of the push buttons, clamp plates provided with respect to each of the push buttons and adapted to clamp the memory plates through preset tuning manipulation, a slide plate adapted to slide in connection with a tuning part on manual tuning or retuning by the push buttons, and comparators pivotally supported on the push plate to which the push button are fixed and having position-restriction parts, the position-restriction parts restricting the memory plate to a position registered with the slide plate on preset tuning, and restricting the slide plate to a position registered with the memory plate after it has been clamped on retuning. A journal-bearing part of the memory plate comprises a round pin and a hole having the shape of, for example, a triangle in which the pin is to be fitted, and the journal-bearing part is manitained stably with the pin making contact with the sides of the hole at two different points.
REFERENCES:
patent: 3602051 (1971-08-01), Olah
patent: 3863509 (1975-02-01), Zimatore
patent: 3943779 (1976-03-01), Ganderton
patent: 3946344 (1976-03-01), Wilkinson
Maejima Yoshihiko
Shimazu Teruo
Herrmann Allan D.
Mitsumi Electric Co. Ltd.
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