Disk drive apparatus

Details Disk drive apparatus Disk drive apparatus

1996-07-09

1998-10-13

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9912, 360 9905, G11B 1702

Patent

active

058221514

ABSTRACT:
The present invention provides an improvement to a clamp in a disk drive. Insertion holes are formed in the clamp, and screws are inserted into the insertion holes to fasten the clamp to the spindle. The bottom of the screw head contacts the clamp surface to apply a force to the clamp. However, the clamp does not contact the entire bottom surface of the screw head. Only a portion of the bottom surface of the screw head contacts the clamp to apply a force to the clamp. Since the force caused by tightening the screw is applied only to the area contacting the screw, the force diffuses in a non-contact area in an outer portion of the clamp. Therefore, disk distortion and deformation are decreased.

REFERENCES:
patent: 4205357 (1980-05-01), Barton et al.
patent: 4561035 (1985-12-01), McDorman et al.
patent: 4853924 (1989-08-01), Takahashi et al.
patent: 5295030 (1994-03-01), Tafreshi
patent: 5426548 (1995-06-01), Fujii et al.
patent: 5459627 (1995-10-01), Peter
patent: 5490024 (1996-02-01), Briggs et al.
patent: 5493462 (1996-02-01), Peter
patent: 5497281 (1996-03-01), Jewell et al.
patent: 5517376 (1996-05-01), Green
IBM TDB vol. 20, No. 10 Mar. 1978 "Eliminating Clamp Induced Stresses in Disk Stacks" by B. Beye, p. 4107.

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