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:
Mar. 11, 2008
Filed:
Mar. 07, 2003
Toru Takahashi, Iwata, JP;
Koichi Okada, Iwata, JP;
Kenichi Iwamoto, Iwata, JP;
Hiroaki Ohba, Iwata, JP;
Toru Takahashi, Iwata, JP;
Koichi Okada, Iwata, JP;
Kenichi Iwamoto, Iwata, JP;
Hiroaki Ohba, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A rotation detecting device that includes an electric power generator having a stator and a rotor, said rotor having a plurality of alternating opposite magnetic poles in a circumferential direction of the rotor, at least a first magnetic sensor mounted on either the stator or a support member for supporting the stator and operable to detect the alternating opposite magnetic poles in the rotor; and an electric power supply circuit for utilizing an electric power generated by the electric power generator as an electric power source for the at least first magnetic sensor.