Machine element or mechanism – Shaft operators – Preselected position
Patent
1981-02-17
1983-11-22
Herrmann, Allan D.
Machine element or mechanism
Shaft operators
Preselected position
334 7, H03J 512, G05G 102
Patent
active
044161646
ABSTRACT:
A push-button type tuning apparatus comprises a frame, a plurality of push-button assemblies each having a push-button on one end thereof, and inserted into and supported by the frame, where the push-button assembly is slidable in the pushing direction between a non-operational position and an operational position, a cam member provided on the frame, where the cam member is slidable in a direction perpendicular to the pushing direction of the push-button assembly, and a tuner provided on the frame, where the tuner is tuned according to the sliding quantity of the cam member. The push-button assembly further has a memory piece which has a V-shaped cam portion, where the memory piece is rotatably supported in the vicinity of the open portion of the V-shaped cam portion in a state in which the vertex of the V-shaped cam portion faces towards the direction of the push-button, and locking means for locking the memory piece at a desired rotated position. The cam member further has a projecting cam portion provided on the inner side of the V-shaped cam portion of the memory piece. Moreover, the V-shaped cam portion of the memory piece which is in the locked state, makes contact with and pushes against the projecting cam portion of the cam member upon sliding of the push-button assembly in the operational position, and guides the projecting cam portion to the vertex of the V-shaped cam portion to slide the cam member in the perpendicular direction with respect to the pushing direction of the push-button assembly.
REFERENCES:
patent: 4133214 (1979-01-01), Cicala
patent: 4191058 (1980-03-01), Stamm
patent: 4299132 (1981-11-01), Dellantonio
patent: 4331038 (1982-05-01), Naoi
Herrmann Allan D.
Mitsumi Electric Company Ltd.
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