Tone arm bearing system

Details Tone arm bearing system Tone arm bearing system

1979-07-30

1982-04-13

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

308189A, G11B 318

Patent

active

043251315

ABSTRACT:
In a bearing system for a tone arm for use with a phonograph record player or the like where the bearing system includes a bracket for supporting the tone arm, a rotatable, tubular shaft connected to the bracket for permitting horizontal rotation of the tone arm, and a support for bearing the shaft including ball bearings or the like, the improvement of a suspension wire connected to the bracket at the upper end thereof and extending through the rotatable, tubular shaft; and a device for applying tension to the suspension wire to lessen undesirable movement of the shaft. The tension applying device preferably applies the tension to the suspension wire magnetically and may include a first magnetic structure connected to the lower end of the suspension wire and a second, fixedly positioned magnetic structure spaced from the first magnet structure where at least one of the first and second magnetic structures is a magnet.

REFERENCES:
patent: 2060117 (1936-11-01), Proctor
patent: 3836155 (1974-09-01), Soannou
patent: 4062548 (1977-12-01), Kagata

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