Air-bearing motor assembly for magnetic recording systems

Details Air-bearing motor assembly for magnetic recording systems Air-bearing motor assembly for magnetic recording systems

1993-01-11

1994-02-01

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

384275, H02K 516, F16C 1700

Patent

active

052834913

ABSTRACT:
An electric motor for a magnetic disk memory device includes a conical hub and a conical plane or grooved base and an integral air-bearing which significantly reduces non-repeatable runout, audible noise, and vibration. The base is rigidly attached to the shaft while the hub, which carries all of the load, rotates on the air cushion created by a pressurized air film. An upper sleeve controls the pressure fluctuation in the air film in a dynamic condition. In a static condition, the hub rests on a dry lubricated surface. The force developed due to the pressurized air film balances the rotating member in any condition.

REFERENCES:
patent: 5073037 (1991-12-01), Fujikawa et al.
patent: 5127744 (1992-07-01), White et al.
patent: 5168186 (1992-12-01), Yashiro

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