Spindle motor for a magnetic disk drive

Details Spindle motor for a magnetic disk drive Spindle motor for a magnetic disk drive

1993-04-20

1995-10-24

LaBalle, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 67R, 360 9807, H02K 524, H02K 714, G11B 1708

Patent

active

054612683

ABSTRACT:
A spindle motor applicable to a magnetic disk drive and carrying a stack of magnetic disks thereon. When an armature oscillates due to a great current fed thereto, O-rings intervening between the armature and a shaft damp the oscillation before it is transmitted to a housing and a cover via the shaft. The O-rings, therefore, allow the motor to rotate at high speed while producing a minimum of noise.

REFERENCES:
patent: 3974406 (1976-08-01), Wehde
patent: 4060745 (1977-11-01), Linscott, Jr.
patent: 4117359 (1978-09-01), Wehde
patent: 4617484 (1986-10-01), Buijsen
patent: 4623812 (1986-11-01), van de Griend
patent: 4647803 (1987-03-01), von der Heide et al.
patent: 4760299 (1988-07-01), Dickie et al.
patent: 5235227 (1993-08-01), Fazekas

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