Sound reproducing unit

Details Sound reproducing unit Sound reproducing unit

1974-05-20

1977-03-08

Haroian, Harry N.

Undertaking

274 26, 274 1A, 274 9R, G11B 310

Patent

active

040109593

ABSTRACT:
A voice or sound unit adapted for use on toys and the like has a mechanical linkage system with a joint capable of transmitting sound indicia while isolating the tone arm from any absorption of stylus movement. The tone arm can employ flexure hinges to insure a constant force on the stylus. A planetary gear coupling system provides a unique drive transmission to either a single turntable or a pair of concentric turntables. If a pair of turntables are used, they can be relatively rotated to combine a large number of sound sequences.

REFERENCES:
patent: 1199040 (1916-09-01), Adams
patent: 1312959 (1919-08-01), Davis et al.
patent: 1414802 (1922-05-01), Burch
patent: 2624584 (1953-01-01), Rockwell
patent: 3450410 (1969-06-01), Castagna

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