Pickup arm lifting device

Details Pickup arm lifting device Pickup arm lifting device

1976-03-17

1977-12-13

Phillips, Charles E.

Undertaking

274 23R, G11B 310

Patent

active

040625486

ABSTRACT:
A pickup arm lifting device in which a follower magnet is attached to the lower end of a slide shaft disposed for vertical movement for lifting or lowering a pickup arm, and a lifting magnet and a lowering magnet are mounted on an operating plate and are so magnetically oriented that the lifting magnet repels the follower magnet while the lowering magnet attracts the follower magnet, whereby when the operating plate is so displaced as to bring the lifting or lowering magnet in line with the follower magnet, the follower magnet is repelled away from or attracted toward said lifting or lowering magnet and consequently the slide shaft is lifted or lowered to lift or lower the pickup arm.

REFERENCES:
patent: 2915315 (1959-12-01), Rabinow
patent: 3156472 (1964-11-01), Brock
patent: 3292935 (1966-12-01), Cooper
patent: 3511509 (1970-05-01), Firestone
patent: 3623734 (1971-11-01), Toyonaka et al.
patent: 3830505 (1974-08-01), Rabinow
patent: 4023130 (1977-05-01), Ridler et al.

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