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:
Dec. 07, 2004
Filed:
Feb. 21, 2003
Ikunori Sakatani, Kanagawa-ken, JP;
Yukio Higuchi, Kanagawa-ken, JP;
Nobuyuki Hagiwara, Kanagawa-ken, JP;
NSK Ltd., Tokyo, JP;
Abstract
A spindle motor comprises a hollow shaft having one end formed with a thrust plate , and a sleeve provided to face the shaft through a radial fluid bearing clearance R therebetween, wherein a thrust fluid bearing S is formed between the opposite flat surfaces of the thrust plate and the sleeve facing the flat surfaces . In addition, the hollow shaft has a connection portion at the lower end formed in a concave shape, such that the thrust plate is guided by the inner peripheral surface of the connection portion such that it is coaxial with the shaft , and fixed to the shaft by fitting the cylindrical portion of a set screw to the through hole of the thrust plate and the connection portion