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:
Nov. 01, 2005
Filed:
Jan. 13, 2004
Yasuo Shimizu, Wako, JP;
Yoshito Nakamura, Wako, JP;
Shunichiro Sueyoshi, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A rotational torque detection mechanism is provided, which includes a rotational shaft whose first end portion reaches outside the mechanism, a magnetostrictive membrane which is disposed on a surface of the rotational shaft and varies its magnetic permeability according to an amount and direction of rotational torque acting on the rotational shaft, an excitation circuit which is disposed to confront the rotational shaft so as to excite the magnetostrictive membrane and a detection circuit which is disposed to confront the rotational shaft so as to electrically detect a change of the magnetic permeability of the magnetostrictive membrane. In the rotational detection mechanism, the first end portion is adapted to be a free end and a second end portion of the rotational shaft is rotatably supported.