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. 28, 2001
Filed:
Sep. 14, 1999
Erming Luo, Norman, OK (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
Apparatus and method for clamping discs in a disc stack assembly to provide even distribution of clamping force upon the discs. A teeth lock ring disposed atop a disc stack includes an annular member with a central opening for passing over a spindle motor hub. The teeth lock ring further includes a plurality of grooves and wedge shaped portions alternatively and circumferentially disposed about an inner diameter. Corresponding teeth on the spindle motor hub lock into each of the plurality of grooves. The circumferentially extending wedge shaped portions secure within corresponding grooves on the spindle motor hub. The teeth lock ring effectively compresses a clamp to provide uniform contact between the clamp and a top most disc to prevent disc waviness.