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:
Jul. 10, 2007
Filed:
Apr. 01, 2005
Chandra S. Namuduri, Troy, MI (US);
Balarama V. Murty, West Bloomfield, MI (US);
Jie Tong, Sterling Heights, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Balarama V. Murty, West Bloomfield, MI (US);
Jie Tong, Sterling Heights, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A power steering system for a vehicle includes a hydraulic pump connected to a power steering gear of the vehicle and a fluid coupling interconnecting a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an electronic controller operable to provide a variable control signal based on received input and an amplifier to receive the variable control signal and energize the fluid coupling in response thereto to vary torque transmitted via the fluid coupling.