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. 18, 2000
Filed:
Feb. 14, 1997
Yuichi Fukuyama, Yokohama, JP;
Satoshi Miura, Hadano, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A power steering apparatus for an electric vehicle has a steering mechanism for steering a pair of steered wheels upon receiving assist power from a steering assist-power according to a steer force required for steering the steered wheels. A fluid pressure pump driven by an electric motor supplies pressurized fluid to the steering assist-power mechanism. An electric motor controller stops the electric motor when the electric-source voltage detected by an electric source voltage detector is greater than or equal to a voltage set value and when the steer angle detected by a steer angle detector is smaller than a steer angle set value, and prohibits stopping the electric motor when the electric-source voltage is smaller than the voltage set value. Therefore, it becomes possible to ensure the steering responsiveness under an electric voltage lowered condition while avoiding the disturbance to the electric source.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile