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:
Feb. 14, 2012
Filed:
Nov. 09, 2007
Applicants:
Yoshiyuki Shibata, Toyota, JP;
Jiro Nakano, Okazaki, JP;
Inventors:
Yoshiyuki Shibata, Toyota, JP;
Jiro Nakano, Okazaki, JP;
Assignee:
JTEKT Corporation, Osaka-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B62D 5/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electric power steering (EPS) device including a rack actuator that applies assist force to a rack shaft, a column actuator that applies assist force to a column shaft, and an ECU that controls operation of the actuators by supplying drive power to motors, each of which is a drive source of the corresponding one of the actuators. A permanent magnet motor (BLDC) is employed as the motor of the rack actuator and an induction motor, which is a non-permanent magnet motor, is used as the motor of the column actuator.