Tone arm assembly

Details Tone arm assembly Tone arm assembly

1980-11-24

1982-08-31

Shepperd, John W.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 75, 369258, G11B 316

Patent

active

043475981

ABSTRACT:
A tone arm assembly in which an upper plate is given added strength by providing it with apertures only in the region of the drive motor and the tone arm support shaft without the need of a long aperture to accommodate the entire tone arm assembly. The tone arm shaft is rotatably supported through a first rotatable member onto a second rotatable member and finally to a vertical support shaft. A connecting member and weight shaft are detachably coupled to the first rotatable member through damper means. Prior to attachment of the connecting member and weight shaft, the tone arm shaft can be rotated in a vertical plane through an angle of approximately 100.degree..

REFERENCES:
patent: 2351948 (1944-06-01), Gay
patent: 3167317 (1965-01-01), Wilson
patent: 4101133 (1978-07-01), Aoki et al.
patent: 4113265 (1978-09-01), Iyeta

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