Spindle motor

Details Spindle motor Spindle motor

1996-11-18

1998-11-10

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 92, 360 9807, H02K 1100

Patent

active

058348689

ABSTRACT:
Although a rotor shaft of a spindle motor for driving an optical disc is constituted by stainless steel not to cause damage or friction when the disc is mounted or removed, it is intended to provide a spindle motor which does not require to use a material with bad workability such as stainless steel. A rotor shaft or a rotor cap mounted on the rotor shaft is made from a resin material or an alloy material with good workability such as brass, and a hard coating is provided on its surface to provide hardness necessary for components made of a material with good workability.

REFERENCES:
patent: 4672250 (1987-06-01), Seitz
patent: 4780948 (1988-11-01), Ferguson et al.
patent: 4804874 (1989-02-01), Nakamura
patent: 5089732 (1992-02-01), Konno et al.
patent: 5241229 (1993-08-01), Katakura et al.
patent: 5304879 (1994-04-01), Suzuki et al.

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