Sound reproducing device

Details Sound reproducing device Sound reproducing device

1981-07-01

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

044046685

ABSTRACT:
In order to perform selective sound reproduction from a plurality of recorded grooves on a record disc, a stopper block for stopping a record disc at a position where starting point of the record disc is able to engage the reproduction stylus of a pickup is disposed on the reverse side of the record disc. A plurality of locking bars corresponding to the number of recorded grooves are distributed along a circle concentric with the record disc and the circle has a radius smaller than the radius of the record disc.
The locking bars are urged by a flat spring having radial teeth fixed around a shaft holder for receiving the center shaft toward direction, and are normally held by the spring apart from the stopper block. The center shaft as a center of rotation of the record disc is normally biased by a spring toward retracted direction and engages the locking bars through a manipulating member. One of the locking bars urges the manipulating member affixed to the center shaft by pushing thereon against the resilient force imparted by the flat spring. In turn the center shaft pushes a sound transmitting member upward and releases stylus force applied to pickup to allow the pickup to return by a return spring to the starting point of sound reproduction. Prior to the engagement of the center shaft and the sound transmitting member, the locking bar projects into the rotational plane of the stopper block and engages with the stopper block such that the record disc is temporarily stopped.

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

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