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:
Apr. 08, 2014
Filed:
Sep. 14, 2012
Jeffry Arnold Leblanc, Aptos, CA (US);
Troy Michael Herndon, San Jose, CA (US);
Robert Alan Nottingham, Santa Cruz, CA (US);
Alan Lyndon Grantz, Aptos, CA (US);
Jeffry Arnold LeBlanc, Aptos, CA (US);
Troy Michael Herndon, San Jose, CA (US);
Robert Alan Nottingham, Santa Cruz, CA (US);
Alan Lyndon Grantz, Aptos, CA (US);
Seagate Technology LLC, Cupertino, CA (US);
Abstract
A rotating hub and fixed spindle assembly with first and second fluid dynamic journal bearings and first and second fluid dynamic thrust bearings for a disc drive memory system has a pump seal and a radial ring seal at a first axial terminus for lubricant containment, and a capillary seal and a labyrinth seal at a second axial terminus for lubricant containment and storage. Lubricant fluid pressure differences between first and second seals are minimized through one or more lubricant fluid communicating channels in the hub assembly, in order to minimize lubricant fluid loss through a seal. Lubricant fluid can also be purged of any air bubbles by lubricant fluid circulation through the channel.