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:
Mar. 26, 2002
Filed:
Feb. 29, 2000
Don Blandino, Sterling Heights, MI (US);
Leonid V. Bogdanov, Troy, MI (US);
Philip H. Berger, Troy, MI (US);
Lutz Axel May, Newbury, GB;
Richard Wotherspoon, Banbury, GB;
Other;
Abstract
A power steering mechanism ( ) for turning steerable wheels of a vehicle comprises a rotatable input member ( ), a rotatable output member ( ), and a torsion bar ( ) connecting the input member and the output member. The torsion bar ( ) is fixedly connected to the output member ( ) and twists upon relative rotation between the input member ( ) and the output member. The torsion bar ( ) is made of a magnetoelastic material and has a defined surface area ( ) which carries a magnetic field, which magnetic field varies upon twisting of the torsion bar, magnetic field detector ( ) is located to sense variance in the magnetic field. The input member ( ) is interposed between the torsion bar ( ) and the magnetic field detector ( ) and is made of a non-magnetic material.