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. 18, 1996
Filed:
Mar. 10, 1995
Efim Bronshvatch, Saratoga, CA (US);
Ming-Goei Sheu, Cupertino, CA (US);
Hatem R Radwan, San Jose, CA (US);
Seagate Technology, Inc., Scotts Valley, CA (US);
Abstract
A disc clamp formed in a circular shape from planar material. The disc clamp includes a central mounting portion having screw holes through which screws are inserted and fastened to matching tapped holes in the hub of the spindle motor. A circular corrugation is formed closely adjacent the outer diameter of the clamp forming a circular contact surface facing in the direction of the uppermost disc in a vertical stack of discs. A stiffening bend is formed at a radius lying between the central mounting portion and the circular corrugation to distribute the clamping force evenly between adjacent pairs of the screws. In a second aspect of the invention, the central mounting portion of the clamp includes a central opening and that part of the central mounting portion between the central opening and the stiffening bend is formed out-of-plane in the direction of the discs so that the central mounting portion will be substantially flattened onto the top of the hub of the spindle motor when the screws are tightened.