Record player with spring-assisted pick-up arm return

Details Record player with spring-assisted pick-up arm return Record player with spring-assisted pick-up arm return

1981-10-30

1984-06-05

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

369230, 369245, G11B 1706

Patent

active

044532440

ABSTRACT:
A record player having a pick-up arm which is automatically moved to the rest position by a spring, the energy necessary for returning the arm being stored by the lowering device of the arm. A rotating cam which lowers the arm also moves one end of an over-center spring-loaded lever, whose far end is guided such that before the arm is fully lowered the lever passes a dead center position. Motion past dead center causes a pin on the lever to move into position in which subsequent lever return, due to the loading spring, rotates the arm to the rest position.

REFERENCES:
patent: 828598 (1906-08-01), Crabb
patent: 1332722 (1920-03-01), Herbert
patent: 4183538 (1980-01-01), Saito

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