Grooved record playback system

Details Grooved record playback system Grooved record playback system

1978-04-20

1979-11-06

Stephan, Steven L.

Undertaking

274 37, 358128, G11B 358

Patent

active

041733487

ABSTRACT:
A composite stylus assembly, provided for a grooved disc record playback system, includes a playback stylus supported on a free end of an arm. The other end of the arm is supported by a flexible mount in a cartridge. The stylus rides in the groove of the record for information recovery. The arm is located within a hollow tube which is supported at one end thereof by the flexible mount. The free end of the tube includes a mechanism which aids in the steady inward movement of the tube relative to the disc center when relative motion between the disc and the playback stylus is established. When the playback stylus retraces the same groove convolution, the inward motion of the hollow tube exerts enough force on the stylus arm to enable the playback stylus to ride over the walls of the groove.

REFERENCES:
patent: 3641284 (1972-02-01), Westerkamp et al.
patent: 3817538 (1974-06-01), Senrick
patent: 3822065 (1974-07-01), Arbib
patent: 3993863 (1976-11-01), Leedom et al.
patent: 4049280 (1977-09-01), Leedom

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