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:
Jan. 06, 2004
Filed:
Apr. 25, 2000
Zhejie Liu, Singapore, SG;
QiDe Zhang, Singapore, SG;
Shixin Chen, Singapore, SG;
Teck Seng Low, Singapore, SG;
Data Storage Institute, Singapore, SG;
Abstract
A spindle motor ( ) including a stator component ( ), a rotor component ( ), including a hub ( ) for supporting one or more discs, and a bearing assembly between tHe components, formed of a journal bearing ( ) and a thrust bearing ( ), wherein the journal bearing ( ) is an aerodynamic bearing and the thrust bearing is adapted to function in a bi-directional manner and includes an annular member ( ) projecting radially from one of the components into an associated recess ( ) formed in the other of the components. Preferably, the annular member has two opposed bearing faces ( ) arranged adjacent corresponding bearing surfaces of the recess, and a hydrodynamic bearing is formed between the respective bearing faces and surfaces.