Control mechanisms for pick-up arms of record players

Details Control mechanisms for pick-up arms of record players Control mechanisms for pick-up arms of record players

1978-03-14

1981-05-12

Haroian, Harry N.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369216, G11B 308

Patent

active

042667836

ABSTRACT:
A control mechanism for raising, swinging and lowering the pick-up arm of a record player comprising a disc having an arcuately shaped depression in the periphery thereof. The contacts of an electrical contact sensor switch are located in the disc peripheral depression and bridging of these contacts will cause generation of a first command signal for the control mechanism. Devices for generating second and possibly third command signals are associated with the disc which may be rotatably mounted.

REFERENCES:
patent: 3715540 (1973-02-01), Larson
patent: 3787732 (1974-01-01), Larson
Bulletin: "Pushbutton Switch With No Moving Parts", R. A. Johnson.

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