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. 21, 1999
Filed:
Apr. 15, 1998
Applicant:
Inventor:
Shunji Matsushima, Nagano, JP;
Assignee:
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
310 51 ; 310 / ; 360 9807 ; 360 9904 ; 360 9905 ; 360 9908 ;
Abstract
A spindle motor includes a shaft 6 which is rotatably supported; a rotor casing 7 which is turned together with the shaft 6; and a turn table 9 which is fixedly mounted on one end portion of the shaft 6 and is rotated with a disk 10 mounted thereon. An eccentric member 12 is loosely fitted on the part of the shaft 12 which is located between the rotor casing 7 and the turn table 9. The eccentric member 12 is turned with the rotation of the rotor casing 7. In place of the eccentric member, a ball may be arranged which is rolled around the shaft.