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:
Feb. 01, 2000
Filed:
May. 18, 1999
Applicant:
Inventors:
Zhejie Liu, Singapore, SG;
Mohammed Abdul Jabbar, Singapore, SG;
Qide Zhang, Singapore, SG;
Teck Seng Low, Singapore, SG;
Shixin Chen, Singapore, SG;
Yuen Ann Mah, Singapore, SG;
Assignee:
Data Storage Institute, Singapore, SG;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 90 ; 310 89 ; 310 905 ; 310 52 ; 384107 ; 384100 ; 384112 ; 384113 ; 384123 ; 384132 ; 384133 ;
Abstract
An electric spindle motor has a base assembly (19) and a hollow notatable hub (16) housing a motor. The hub (16) is mounted for rotation about an axis and a stator (12) is mounted on the base assembly (19) inside the hub (16). A liquid filled journal bearing (11, 21) acts between the base assembly (19) and the hub (16) to provide radial support of the hub (16). A gas filled thrust bearing (26, 27, 35) also acts between the hub (16) and base assembly (19) to provide at least axial support of the hub (16).