Signal pickup lifting/lowering apparatus

Details Signal pickup lifting/lowering apparatus Signal pickup lifting/lowering apparatus

1975-02-03

1976-08-03

Aegerter, Richard E.

Undertaking

178 66R, G11B 310

Patent

active

039725332

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.

REFERENCES:
patent: 2551506 (1951-05-01), Rockwell
patent: 3647224 (1972-03-01), Klein
patent: 3675932 (1972-07-01), Rabinow
patent: 3774917 (1973-11-01), Aso
patent: 3814441 (1974-06-01), Craggs
patent: 3873762 (1975-03-01), Taylor

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