Tone arm

Details Tone arm Tone arm

1979-05-22

1981-03-24

Shepperd, John W.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369255, G11B 310

Patent

active

042576156

ABSTRACT:
This invention concerns a tone arm of the type in which a separate element is supporting the extending parts of the arm. This separate element is comprising the suspension point around which the arm is moving, and it differs from the type of those elements already known thereby, that said suspension point is placed excentrically with respect to the center of gravity of the said separate element, which is made of solid material in such a way, that the said element is giving almost no contribute to the total inertial moment of the tone arm as to the suspension point, even if it is comprising electrical joints and attachment of arm tube or -rod above the suspension point.

REFERENCES:
patent: 3167317 (1965-01-01), Wilson
patent: 3319967 (1967-05-01), Zimmermann
patent: 3366382 (1968-01-01), Haddy
patent: 4066266 (1978-01-01), Anley
patent: 4102536 (1978-07-01), Clunis
patent: 4143248 (1979-03-01), Broeksema et al.

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