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:
Oct. 08, 2002
Filed:
Dec. 21, 1998
Applicant:
Inventors:
Assignee:
Aisin Seiki Kabushiki Kaisha, Aichi-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P 3/00 ;
U.S. Cl.
CPC ...
G01P 3/00 ;
Abstract
A rotary speed detector includes a rotating angle sensor for outputting digital signals which constitute rotating angle data of a rotating member, an angle variation calculator for calculating an angle variation with respect to a predetermined interval of time and a revolving speed calculator for calculating rotary speeds from the angle variation.