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:
Apr. 25, 1989
Filed:
Jul. 14, 1988
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L / ;
U.S. Cl.
CPC ...
7386236 ; 7386233 ;
Abstract
A torque sensor comprising strips of an amorphous magnetic alloy fixed to the surface of a rotary shaft so as to utilize a inverse magnetostrictive effect of the amorphous magnetic alloy is operated in a state in which a predetermined amount of internal compressive strain is previously produced in the strips, so that the torque sensor can operate without any temperature-dependent change in its sensitivity and without occurrence of a hysteresis of its output.