Spindle motor having a magnet which is field centered relative t

Details Spindle motor having a magnet which is field centered relative t Spindle motor having a magnet which is field centered relative t

1997-06-16

2000-07-04

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, 310156, 360 9908, 360 9807, H02K 502

Patent

active

060843233

ABSTRACT:
A spindle motor in a disc drive has a rotor assembly rotatably mounted to a base. A stator is mounted to the base and a magnet is mounted to the rotor assembly. The magnet or the stator is allowed to move in an axial direction relative to the other under the influence of magnetic interaction between the magnet and the stator. The magnet and stator are then rigidly fixed relative to one another in the axial direction.

REFERENCES:
patent: 4101371 (1978-07-01), Aggen
patent: 4141137 (1979-02-01), De Wolf et al.
patent: 4193184 (1980-03-01), Futterer
patent: 4797762 (1989-01-01), Levy et al.
patent: 5027028 (1991-06-01), Skipper
patent: 5047677 (1991-09-01), Mineta et al.
patent: 5165701 (1992-11-01), Koba
patent: 5238254 (1993-08-01), Takii et al.
patent: 5357162 (1994-10-01), Ajyoshizawa et al.
patent: 5501760 (1996-03-01), Mukawa
patent: 5610464 (1997-03-01), Asano et al.

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