Uniform load distribution duel member disk clamp

Details Uniform load distribution duel member disk clamp Uniform load distribution duel member disk clamp

1994-02-24

1996-05-14

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9912, G11B 17022, G11B 17038

Patent

active

055173764

ABSTRACT:
A disk drive including a disk clamp for clamping one or more disks within the disk drive. The clamp is comprised of a dual member construction which provides a substantially uniform contact pressure at the circular line of contact between the clamp and the disk. The clamp includes an inner ring surrounding and fixedly attached to the hub of the disk drive. The inner ring preferably does not contact the disk. An outer ring is provided having a first portion underneath the inner ring and a second portion provided axially outward from the inner ring. The second portion of the outer ring contacts the disk in a substantially circular line of contact. The inner ring further includes a plurality of threaded holes, through which a plurality of set screws are provided. The screws, when sufficiently threaded through the holes, exert a pressure on the outer ring, which pressure is uniformly transmitted to the disks to secure the disks within the drive.

REFERENCES:
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IBM Technical Disclosure Bulletin, vol.24, No. 6, Nov. 1981, New York, pp. 2765-2766, J. R. Reidenbach "Method For Disk File Disk Clamping".
Patent Abstracts of Japan, vol. 14, No. 508, (P-1128), Nov. 7, 1990, JP A 2210681 (Hitachi Ltd) Aug. 22, 1990.
IBM Technical Disclosure Bulletin, vol. 27, No. 8, Jan. 1985, New York, pp. 5010-5011, R. W. Luoma, et al. "Cogged Shrink Ring For Disk Clamping".
IBM Technical Disclosure Bulleting, vol. 36, No. 10, Oct. 1993, New York, pp. 73-74, XP 000412189 "Hard Disk Drive Clamp With High Compliance And Low Radial Load".
Patent Abstracts of Japan, vol. 15, No. 435 (P-1272), Nov. 6, 1991, JP A 3183057 (Fujitsu Ltd) Aug. 9, 1991.

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