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:
Oct. 12, 1993
Filed:
May. 07, 1992
Arthur E Bishop, Northwood NSW, AU;
A. E. Bishop & Associates Pty. Limited, New South Wales, AU;
Abstract
A hydraulic power steering rotary valve of generally conventional construction characterized in that the on-center characteristics of the valve are governed by an arrangement of rolling elements and notched elements arranged to produce a detent action between the input shaft and the sleeve or driven member, the rolling elements rolling between opposite surface contours of a pair of opposed notched elements, the contours each including a convex surface the shape of which is such that a centering torque between the input shaft and the sleeve or driven member is produced which decreases for increasing amounts of rotation away from a neutral condition of the rotary valve.