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:
Sep. 03, 1985
Filed:
Jan. 16, 1984
Akio Hashimoto, Kawasaki, JP;
Tomio Yasuda, Kasukabe, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A power steering system makes use of a direct-current servomotor to produce an auxiliary torque added to the torque which is applied to the steering wheel of a vehicle by the driver. The system includes an electronic apparatus, which receives a signal indicating the velocity of the vehicle, divides the whole range of the vehicle velocity into at least three ranges, and determines under which of these ranges the present velocity falls. In the lowest range, the control apparatus energizes the motor to produce such an auxiliary torque. In the middle range, the apparatus de-energizes the motor and so no auxiliary torque is generated. In the highest range, the apparatus connects a load such as a resistor with the coil in the motor to brake the rotation of the steering wheel.