Overhead disc record grounding apparatus

Details Overhead disc record grounding apparatus Overhead disc record grounding apparatus

1976-04-12

1977-08-09

Stephan, Steven L.

Undertaking

1791001B, 274 10S, 358128, G11B 100

Patent

active

040406342

ABSTRACT:
In a system for playing back prerecorded information from a disc record by a groove-engaging signal pickup, an overhead signal pickup drive apparatus is provided. A support housing is reciprocably mounted in the cover of the player for movement radially of the disc record. A pickup arm, carrying the signal pickup at one end, is pivotally mounted in the support housing at its other end. Means ae mounted in the cover for driving, during playback, the support housing radially with respect to the disc record independent of the radial motion of the groove-engaged signal pickup due to the spiral groove in a manner that maintains the axis of the pickup arm substantially tangential to the groove at the point of pickup record engagement. A grounding apparatus also mounted in the cover is provided for grounding a disc record having a coating capable of accumulating electrical charge.

REFERENCES:
patent: 3871663 (1975-03-01), Stave
patent: 3891796 (1975-06-01), Takahara et al.

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