1978-07-10
1980-01-22
Shepperd, John W.
Undertaking
274 9RA, 274 23R, 318313, G11B 1706
Patent
active
041846885
ABSTRACT:
A tone arm assembly for record players has first and second electro-magnetic motors operable for swinging a tone arm in vertical and horizontal directions, respectively, in respect to a record disc on a turntable, and a control circuit for controlling the first and second motors in such a manner that the tone arm is moved from a raised inoperative position to a lowered playing position, or from the lowered playing position to the raised inoperative position in response to control signals.
REFERENCES:
patent: 2952464 (1960-09-01), Stimler
patent: 3572724 (1971-03-01), Rabirow
patent: 4124216 (1978-11-01), Sorensen
Hara Hideo
Kawashima Isao
Omura Yoshimoto
Sekiguchi Keisuke
Shino Kuninori
Eslinger Lewis H.
Shepperd John W.
Sinderbrand Alvin
Sony Corporation
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