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:
Sep. 10, 1991
Filed:
Jun. 15, 1990
Stanley R Goodrich, Jr, Reese, MI (US);
Michael C Melvin, Freeland, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An automotive power steering gear includes a stub shaft, a pinion head, a torsion bar between the stub shaft and pinion head, and a detent reaction arrangement for varying the threshold manual effort required to initiate power assist and/or for varying the relationship between manual effort and power assist. The detent reaction arrangement includes an annular flange and tubular sleeve on the pinion head, a plurality of radial sockets in the tubular sleeve, a plurality of detent elements in the sockets, a stem on the stub shaft extending into the tubular sleeve, detent grooves on the stem engaged by the detent elements, and an annular collar on the sleeve with a frustoconical wedge engaging the detent elements. A pressure chamber between the annular flange and the collar is connected to a power steering pump so that boost pressure, or a fraction thereof modulated as a function of vehicle speed, reacting against the collar increases the resistance to relative angular displacement between the stub shaft and the pinion head.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile