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. 29, 2002
Filed:
Jul. 02, 2001
Tooru Arai, Fujisawa, JP;
Minebea Co., Ltd., Kitasaku-gun, JP;
Abstract
A sensor with a strain gage is disposed on an inner circumferential surface of a distortion generating body which is a half-blindly hollowed cylinder having a prescribed thickness and diameter between a driving flange to be fixed to a rotating body and a driven flange . The sensor converts a physical quantity corresponding to torque acting on the cylinder into an electrical signal. And the electrical signal is further converted into an optical signal by a light emitting element and transmitted to a stationary section. The optical signal transmitted from the rotary section is made incident on a circumference of an optical fiber . The light made incident on the circumference of the optical fiber is transmitted to an end of the optical fiber. The light which has reached the end is received at a light-into-electricity conversion element to be converted into an electrical signal. Thus, a measured value of torque is obtained. Accordingly, torque of a rotating body can be measured in a noncontact manner with low electric power.