Title: Sound reproducing unit tone arm

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.

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Inventors: Smith, III, Jay (Pacific Palisades, CA, US)
Conroy, Richard F. M. (Woodland Hills, CA, US)

Application Number: 760231
Filing Date: 1977-01-17
Publication_date: 1978-07-18
Assignee: Hasbro Development Corp. (Pawtucket, RI)
Primary Class(es): 369/65 369/198, 369/225, 369/244, 369/272
Other Classes:
US Patent Ref:

2369087	Feb, 1945	Thompson et al.	274/24.
2624584	Jan, 1953	Rockwell	274/23.
3165320	Jan, 1965	Ryan	274/1.
3529834	Sep, 1970	Renoux	274/23.

Other Refs:
Primary Examiner: Aegerter, Richard E.
Assistant Examiner: Shepperd, John W.
Attorney: Salter & Michaelson