Sound reproducing device driven by a constant torque pull string

Details Sound reproducing device driven by a constant torque pull string Sound reproducing device driven by a constant torque pull string

1982-03-01

1983-09-13

Stephan, Steven L.

Dynamic information storage or retrieval

Sound reproduction for toy or novelty device

Indexing to track

369 31, 369 67, G11B 1700, A63H 333, G11B 300

Patent

active

044046677

ABSTRACT:
A winding string, when stretched tight, will lift a speaker unit which applies a stylus pressure to a pickup so that the pickup is allowed to reverted back to the starting point of sound reproduction. The stretched string will also lift a plunger carrying a stopper block to axially advance so as to be in engagement with a retainer piece disposed on the record disc.

REFERENCES:
patent: 3782732 (1974-01-01), Summerfield
patent: 3799556 (1974-03-01), Watanabe
patent: 4150831 (1979-04-01), Watanabe

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