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:
May. 03, 1994
Filed:
Jul. 27, 1992
Akiyoshi Hanazawa, Yao, JP;
Kubota Corporation, Osaka, JP;
Abstract
A temperature compensating device for a torque measuring apparatus of the magneto-strictive type. A torque transmission shaft has a magnetically anisotropic portion formed on the periphery of the shaft. A sensing coil is disposed around the torque transmission shaft in corresponding relation to the magnetically anisotropic portion. A DC voltage from a constant voltage generator is supplied to the sensing coil. A torque detection signal is derived from the AC component of the voltage developed across the sensing coil, and the DC resistance of the sensing coil is detected from the DC component of the voltage, whereby the temperature of the sensing coil is detected. The torque detection characteristics of the apparatus is temperature-compensated on the basis of the temperature detection signal.