Title: Pick-up arm positioning mechanism for an automatic record player

Abstract: A pick-up arm guiding mechanism for an automatic record player having a command disc with pin-guiding concentric grooves for a sensor pin which is connected to the pick-up arm, each groove corresponding to a specific record size, the pin being directed into the desired groove by a mechanical catching means. During the rotation of the command disc in a changing cycle the pin engages a diversion groove which directs the pin toward the disc center, and the pin is forced out of the groove when the inward movement is blocked by a stop disposed such that the pin engages with the selected pin-guiding groove.

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Inventors: Eisemann, Kurt (Berlin, DT)

Application Number: 685067
Filing Date: 1976-05-10
Publication_date: 1978-05-02
Assignee: U.S. Philips Corporation (New York, NY)
Primary Class(es): 369/225 369/184
Other Classes:
US Patent Ref:

2488137	Nov, 1949	Morrison	274/10.
2681227	Jun, 1954	Fisher	274/10.
3010724	Nov, 1961	Hansen	274/10.
3304092	Feb, 1967	Faulkner	274/23.
3433486	Mar, 1969	Kawaharazaki	274/15.

Other Refs:
Primary Examiner: Aegerter, Richard E.
Assistant Examiner: Shepperd, John W.
Attorney: Trifari; Frank R., Treacy; David R.