Toy phonograph with automatic pickup arm return means

Details Toy phonograph with automatic pickup arm return means Toy phonograph with automatic pickup arm return means

1976-05-17

1977-06-07

Stephan, Steven L.

Undertaking

274 1L, 274 15R, A63H 333, G11B 1706

Patent

active

040278875

ABSTRACT:
For automatically returning a pickup arm to a predetermined starting position on the perimeter of a record disc on a motor-driven turntable upon completion of playback, a drive gear is mounted on a turntable shaft for simultaneous rotation with the turntable. A driven gear, integrally formed with a cam, is mounted on a pivotal arm for movement into and out of engagement with the drive gear. When the pickup arm travels to a terminal position on the record discs, during playback, the driven gear is thereby urged into engagement with the drive gear and is, thus, set in rotation with the cam. The rotating cam causes the pickup arm to be lifted off the record disc and, then, to be spring returned from the terminal to the starting position. The record disc used herein is of the type having a plurality of grooves formed therein in the shape of nested spirals, for successive or random playback.

REFERENCES:
patent: 1219144 (1917-03-01), Para
patent: 3529832 (1970-09-01), Goetz et al.
patent: 3589735 (1971-06-01), Watanabe
patent: 3984111 (1976-10-01), Hughes

Affiliated with

Also associated with

Rating

Toy phonograph with automatic pickup arm return means does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Toy phonograph with automatic pickup arm return means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toy phonograph with automatic pickup arm return means will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1232876