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:
May. 14, 1996
Filed:
May. 18, 1995
Emil M Shtarkman, Southfield, MI (US);
John B Colletti, Commerce Township, MI (US);
TRW Inc., Lyndhurst, OH (US);
Abstract
A power steering system includes a housing and a first member supported by the housing for movement relative to the housing. A second member is supported by the housing for movement relative to the housing and the first member. Steerable vehicle wheels are moved in response to relative movement between the first and second members. A power steering resistance control system resists relative movement between the first and second members with a force which varies as a function of variations in vehicle speed. Material is located in a chamber circumscribing the first member. The material has a viscosity which varies as a function of the magnitude of an energy field acting thereon to vary the resistance to relative movement between the first and second members. The energy field is applied to act on the material with a magnitude that varies as a function of the vehicle speed.