Title: Signal pickup lifting/lowering apparatus

Abstract: A stator having a mating surface is fixedly mounted in a pickup arm housing of a disc record player. A rotor, also having a mating surface, is rotatably mounted such that the stator and the rotor mating surfaces are juxtaposed with a thin deposit of damping material interposed therebetween. A pickup arm rest is secured to the rotor for supporting a pickup arm which is pivoted at one end thereof in the housing. A cord is secured to the rotor for causing rotation thereof in a direction that causes the arm rest to lift the pickup arm away from the player turntable when the player is inoperative. When the cord is released, the rotor is free to rotate. A coil spring biases (1) the damped mating surfaces of the stator and the rotor toward each other, and (2) the rotor in a direction that causes the arm rest to lower the pickup arm toward the turntable, in order to effect a smooth landing of a delicate signal pickup on a disc record disposed on the turntable for playback when the cord is released.

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Inventors: Huff, Larry Dean (Indianapolis, IN, US)

Application Number: 546470
Filing Date: 1975-02-03
Publication_date: 1976-08-03
Assignee: RCA Corporation (New York, NY)
Primary Class(es): 369/230 369/126
Other Classes:
US Patent Ref:

2551506	May, 1951	Rockwell	274/23.
3647224	Mar, 1972	Klein	274/23.
3675932	Jul, 1972	Rabinow	274/23.
3774917	Nov, 1973	Aso	274/23.
3814441	Jun, 1974	Craggs	274/23.
3873762	Mar, 1975	Taylor	274/23.

Other Refs:
Primary Examiner: Aegerter, Richard E.
Assistant Examiner: Shepperd, John W.
Attorney: Whitacre; Eugene M., Meagher; William H., Kulkarni; Dilip A.