Memory disk clamp and method

Details Memory disk clamp and method Memory disk clamp and method

1994-05-06

1996-08-06

Bishop, Steven C.

Chucks or sockets

Expanding

Collet type

279141, 360 9912, B23B 3140

Patent

active

055426859

ABSTRACT:
A clamp for a memory disk having a disk aperture bounded by a cylindrical peripheral edge and chamfered peripheral edges includes facing clamp members having chamfered peripheral edges which are parallel to the chamfered edges of the disk aperture. The clamp directs forces to the disk chamfered edges substantially perpendicular to the disk sides thus preventing deformation or cracking of a clamped disk. Preferably, the disk is held between a chamfer on a housing and a chamfer on an expandable collet extending from the housing. A longitudinal movable expander extending through the housing and collet is attached to a pull bar to expand curved segments of the collet to first move the segments particularly the chamfer to a radial position opposite but spaced from a disk chamfered edge, then longitudinally to contact and clamp the disk with a predetermined force.

REFERENCES:
patent: 4787079 (1988-11-01), Ueno
patent: 5014143 (1991-05-01), Mori et al.
patent: 5056082 (1991-10-01), Ekhoff
patent: 5244555 (1993-09-01), Allen et al.
patent: 5275424 (1994-01-01), Watanabe
patent: 5367418 (1994-11-01), Chessman et al.

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