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:
Jun. 15, 1999
Filed:
Nov. 18, 1997
Efim Bronshvatch, Saratoga, CA (US);
Ming-Goei Sheu, Cupertino, CA (US);
Seagate Technology, Inc., Scotts Valley, CA (US);
Abstract
A disc drive including a dual disc clamp for clamping a number of hard discs within a disc drive is disclosed. The clamp is comprised of a top circular clamp member in contact with a bottom circular clamp member, with the clamp members having the same physical shape and area. The bottom clamp member has number of holes formed therein which reduce the disc distortion. The top clamp member has a concave upper surface, while the bottom clamp member has a convex upper surface. The clamp holds the discs in place through pressure provided by a plurality of screws which are passed through holes in the clamp members. The disc drive also includes a spindle motor to which the dual disc clamp is connected. The spindle motor provides a greater torque constant, thereby allowing lower start and run current.