Disk clamp apparatus
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United States of America Patent
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-
Nov 24, 1992
Grant Date -
N/A
app pub date -
Nov 26, 1990
filing date -
Dec 4, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A clamp mechanism for disks is provided with a clamp body having a reference surface for use in fixing a disk thereon, a plurality of claws adapted to press the disk, which is placed on the reference surface of the clamp body, against the same reference surface and fix the same thereon, a plurality of clamp members which have the claws attached thereto, and which are adapted to be moved vertically in the interior of the clamp body, and cams adapted to turn the clamp members in the radial direction of the disk while the clamp members are vertically moved, in such a manner that the claws come toward one another or go farther away from one another. Each of the claws is formed generally to the shape of a fan. Therefore, the clamp portions of the claws which contact the disk, can press about 70-80% of the total area of the circumferential portion of the central hole in the disk.
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