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:
Jul. 06, 2004
Filed:
Sep. 24, 2001
Disc stack assembly having a clamp plate and a retaining ring to clamp a disc to a spindle motor hub
Victor ChiSiang Choo, Singapore, SG;
Kok Loong Teng, Singapore, SG;
Niroot Jierapipatankul, Singapore, SG;
Kok Tong Soh, Singapore, SG;
Johnny Soh, Singapore, SG;
Sen Chai Khew, Singapore, SG;
Chee Suan Low, Singapore, SG;
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A disc stack assembly for use in a disc drive. A spindle motor hub includes an annular ring recess. A disc is clamped to the spindle motor hub by a disc clamp assembly comprising a clamp plate and a retaining ring. The clamp plate includes an inner ring engagement portion, an outer disc engagement portion, and an initial, substantially planar shape in an undeformed state. The retaining ring is secured within the annular ring recess and maintains the clamp plate in a conically deformed state so that the inner ring engagement portion of the clamp plate applies a first moment force against the retaining ring while the outer disc engagement portion of the clamp plate applies a second moment force as an axially directed clamping force upon the disc.