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:
Dec. 07, 1999
Filed:
Jan. 22, 1998
Mitsuhiko Nishimoto, Kashihara, JP;
Akio Hayama, Nabari, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
An electric power steering apparatus wherein a motor driving prohibiting means prohibits driving of a motor when a driving logic determining unit determines that a detected torque is outside a specified range, a direction in which the motor is to be driven on the basis of a motor current target value and the direction of the steering torque are opposite with respect to each other, and the direction in which the motor is to be driven on the basis of the motor current target value and the change direction detected by the torque change direction detecting unit are opposite with respect to each other, and when an abnormal current determining unit detects that a driving current is greater than a specified value.