Winchester disc drive

Details Winchester disc drive Winchester disc drive

1982-11-23

1985-11-26

Levy, Stuart S.

Bearings

Rotary bearing

Antifriction bearing

384495, 384500, 384535, F16C 3304, F16C 2308, F16C 2708

Patent

active

045551898

ABSTRACT:
A rotary actuator assembly, for use as part of a servomechanism for positioning one or more data recording or data recovering heads over selectable data storage tracks at selectable radii on one or more rotary data storage discs, comprises a head support arm pivoted to rotate with a shaft held betwen two bearings in a yoke, where one of the bearings is a composite bearing allowing both axial and rotational movement of the shaft and the other bearing allows only rotational movement of the shaft, the two bearings co-operating to fix the position of the shaft while allowing its free rotation and allowing axial movement of the shaft whenever axial force exceeds a predetermined limit, thereby preventing undue bearing play or bearing binding attendant upon prior art designs.

REFERENCES:
patent: 2221176 (1940-11-01), Boll
patent: 2819127 (1958-01-01), Grobey
patent: 3061822 (1962-10-01), Mitchell
patent: 3490251 (1970-01-01), Roethlisberger
patent: 3945694 (1976-03-01), Vaillette

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