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. 29, 2003
Filed:
Apr. 10, 2001
Applicant:
Inventor:
Dan Kilmer, Seiad Valley, CA (US);
Assignee:
KLA-Tencor Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 1/7028 ; G11B 2/504 ;
U.S. Cl.
CPC ...
G11B 1/7028 ; G11B 2/504 ;
Abstract
A chuck that can center a disk. The chuck may be part of a spindle motor that is integrated into a servo writer. The chuck includes a plurality of cartridges that are attached to a post. The cartridges are coupled to a source of air. Each cartridge may include a biasing element that can move within a variable orifice and engage an inner edge of the disk. The biasing elements move until each cartridge exerts an equal force onto the disk. The equal forces will center the disk onto the spindle motor.