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. 03, 1984
Filed:
Nov. 05, 1981
Maurice P Roberts, Lafayette, IN (US);
TRW Inc., Cleveland, OH (US);
Abstract
Upon initiation of a steering operation, a gerotor gear set rotates a directional control valve to an actuated condition. Initial rotation of the directional control valve actuates a switch assembly under the influence of forces transmitted from the directional control valve. The switch assembly is located in one section of a housing and the directional control valve is located in another section of the housing. The two housing sections are connected in fluid communication so that there are no seals to impede actuation of the switch assembly upon rotation of the directional control valve. The switch assembly and its housing section are rotatable together with the directional control valve to adjust the initial position of the directional control valve relative to the other housing section. In one embodiment of the invention, actuation of the switch assembly effects operation of an electric motor to increase fluid flow from a pump to a steering control assembly. In another embodiment of the invention, actuation of the switch assembly effects operation of a priority valve to reduce fluid flow to an auxiliary apparatus and increase fluid flow to a steering control assembly.