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. 16, 2011
Filed:
Dec. 19, 2007
Applicants:
Kazuhiro Yamakawa, Kounosu, JP;
Tetsuo Kanda, Yokohama, JP;
Inventors:
Kazuhiro Yamakawa, Kounosu, JP;
Tetsuo Kanda, Yokohama, JP;
Assignee:
Azuma Shokai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnetostrictive torque sensor that detects a torque of a rotating shaft and/or a stationary shaft by using a magnetostriction inverse effect that occurs on a shaft surface, the magnetostrictive torque sensor includes a first detection coil, a second detection coil, a first oscillation circuit, a second oscillation circuit, a first direction magnetic permeability detector, a second direction magnetic permeability detector, and a torque detector.