The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 20, 1996
Filed:
Sep. 28, 1994
Peter E Brooks, Rochester, MN (US);
David F Glaess, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A clamp ring for clamping disks to a rotating hub includes a inner diameter leg portion, a cross member portion and a disk contacting portion. A cross sectional view of the clamp ring is N-shaped. The clamp ring is heated so that it thermally expands to a diameter that is larger than the outer diameter of the hub. A thermally expanded clamp ring is placed on the top of the disk stack which has at least one disk. An axial load is placed on the inner diameter leg portion as the clamp ring cools. The inner diameter grips the hub as it cools. The cross member is compressed as the clamp ring cools. The disk contacting portion moves slightly as the clamp ring cools. This movement counteracts the outward movement of the disk contacting portion of the clamp during loading resulting in little tendency to cone the disk. The result is a disk stack clamped without a resulting radial load on the disks.