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:
Mar. 24, 1998
Filed:
Feb. 03, 1997
Iraj Jabbari, San Jose, CA (US);
Shahriar Tafreshi, Capitola, CA (US);
Seagate Technology, Inc., Scotts Valley, CA (US);
Abstract
A disc clamping system, for clamping at least one disc in a disc stack in a disc drive against a disc flange on the hub of a spindle motor at one end of a disc mounting portion of the spindle motor hub, which includes a cylindrical disc clamping portion of the hub at the opposite end of the disc mounting portion of the hub from the disc flange and has a diameter less than the disc mounting portion of the hub, a spring member formed from planar material which includes a circumferential corrugation near its outer extreme and a central opening dimensioned to fit over the disc clamping portion of the hub, and a heat expandable clamp ring, dimensioned to fit over and engage the disc clamping portion of the hub, the clamp ring simultaneously pressing against the spring member closely adjacent the central opening in the spring member and deforming the spring member to produce a clamping force transferred to the discs via a contact surface formed by the circumferential corrugation. In a second aspect of the invention, the clamp ring includes a plurality of notches on its inner surface allowing the insertion of a clamp removal tool to facilitate rework and repair.