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.

Date of Patent:
Apr. 09, 2002

Filed:

Mar. 06, 2001
Applicant:
Inventors:

Makoto Murata, Wako, JP;

Takao Kurosawa, Wako, JP;

Kouji Sasajima, Wako, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D 5/04 ;
U.S. Cl.
CPC ...
B62D 5/04 ;
Abstract

A vehicle including a variable gear ratio steering device and an electric power steering apparatus is disclosed. The variable gear ratio steering device influences on a steering system of the vehicle and varies a ratio of a steering angle of steerable road wheels to a steering wheel angle by driving an electric motor in accordance with a vehicle speed. The electric power steering apparatus influences on the steering system of the vehicle and provides an assist steering wheel torque by driving an electric motor in accordance with a manual steering wheel torque. The vehicle comprises a power supply voltage detector for detecting a voltage of a power supply, and a control unit for controlling the electric motor of said variable gear ratio steering device in accordance with the detected voltage. When the detected voltage decreases to a certain voltage or lower, the control unit brings the variable gear ratio steering device into a slow state and thereafter stops the same.


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