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:
Jun. 29, 2010
Filed:
Jul. 25, 2008
Kenichirou Hidaka, Chita-gun, JP;
Junko Hidaka, Legal Representative, Chita-gun, JP;
Nobuhiko Makino, Anjo, JP;
Takahiro Kojo, Gotenba, JP;
Theerawat Limpibunterng, Susono, JP;
Kenichirou Hidaka, Chita-gun, JP;
Junko Hidaka, legal representative, Chita-gun, JP;
Nobuhiko Makino, Anjo, JP;
Takahiro Kojo, Gotenba, JP;
Theerawat Limpibunterng, Susono, JP;
Denso Corporation, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A power steering apparatus has a steering power assisting system coupled to tire wheels and a variable gear transfer system coupled to a steering wheel. The steering power assisting system includes a torsion bar rotation sensor and a first actuator rotation sensor to calculate a first pinion angle and a second pinion angle based on the detected rotation angles, respectively. The variable gear transfer system includes a steering sensor and a second actuator rotation sensor to calculate a third pinion angle based on the detected rotation angles. Sensor failure is detected by comparing the calculated first, second and third pinion angles.