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:
Aug. 05, 2003
Filed:
Feb. 21, 2001
Applicant:
Inventor:
Mikio Sekine, Fukushima-ken, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 7/30 ; H02K 1/100 ;
U.S. Cl.
CPC ...
G01B 7/30 ; H02K 1/100 ;
Abstract
An index position detector for a spindle motor includes a rotor magnet which is provided on an inner surface of a flange portion of a rotor yoke. A window portion is formed in the flange portion such that a part of the rotor magnet faces outwardly. An inductor is disposed in a stator section and opposes the periphery of the flange portion. The inductor detects a magnetic flux of the rotor magnet via the window portion.
Sekine, Mikio. (2003). Index position detector for spindle motor and motor apparatus including the same (U.S. Patent No. 6603304). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6603304
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile