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:
Mar. 17, 1992
Filed:
Apr. 20, 1990
Mitsuharu Morishita, Himeji, JP;
Mitsubishi Denki K.K., Tokyo, JP;
Abstract
A motor driven power steering apparatus comprising an electric motor for assisting steering, a torque sensor for detecting steering torque, a detecting means for detecting vehicle speed or rotation speed of an engine, a resistance for limiting electric current to be supplied to an electric motor, and a relay being connected in parallel to the resistance, opens the relay when the vehicle is running at a high speed, that is, the vehicle speed or rotation speed is larger than a predetermined value thereof, limits current to be supplied to the electric motor by the resistance, makes torque generated by the electric motor smaller in the case where anything unusual is created in the apparatus at a high speed running, and makes it easier for a driver to correct the steering operation or to avoid a danger.