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:
Nov. 27, 2001
Filed:
Apr. 14, 1999
Alan Lyndon Grantz, Aptos, CA (US);
Gunter Karl Heine, Aptos, CA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A discrete fluid dynamic bearing comprising a fluid dynamic bearing including a bearing cone mounted on a sleeve and defining in cooperation with a bearing seat having a surface facing an outer surface of the bearing cone across a fluid bearing gap, a first seal establishing a pressure gradient from a distal end of the sleeve toward the gap of the fluid dynamic bearing and a second seal on an opposite side of the fluid dynamic bearing from the first seal for establishing a positive, higher pressure toward the fluid bearing gap, the press established by the first and second seals maintain the fluid in the gap during relative rotation of the surfaces of the fluid dynamic bearing.