Low friction phonograph tone arm traverse

Details Low friction phonograph tone arm traverse Low friction phonograph tone arm traverse

1983-11-14

1985-09-03

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369249, 369255, G11B 338

Patent

active

045396728

ABSTRACT:
The tone arm (13) of a record player is carried by a carriage (14) which is movable along a motor-driven rotating spindle (6) extending tangentially with respect to the axis of the turntable (10). For supporting it on the spindle the carriage has two bearings (15 and 16) which are spaced from each other in the axial direction of the spindle and each of which has a bearing surface which engages the spindle at only the upper part of the circumference of the spindle. This arrangement permits slight pivotal movements of the carriage relative the spindle about axes transverse to the spindle to compensate for the forces which occur during accelerations of the tone arm, as when the stylus enters the lead-out groove. The tone arm is connected to a part (20) of the carriage which is made of a vibration-damping material.

REFERENCES:
patent: 2219230 (1940-10-01), Krause
patent: 2640700 (1953-06-01), Mortimer et al.
patent: 2676808 (1954-04-01), Masterson
patent: 3129946 (1964-04-01), Rabinow
patent: 3209151 (1965-09-01), Lillestrand
patent: 3390886 (1968-07-01), Rabinow
patent: 4453243 (1984-06-01), Tanaka et al.

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