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. 27, 1980
Filed:
Sep. 13, 1978
Applicant:
Inventor:
Winfried de Maight, Mutlange, DE;
Assignee:
Zahnradfabrik Friedrichshafen AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180133 ; 60413 ;
Abstract
A pump having a limited maximum output pressure is alternately connected to a steering control valve and a pressure storage reservoir charged by the pump under control of a signal pressure operated valve to supply fluid under the maximum pump pressure to a steering servomotor only under high loading conditions. The storage pressure is limited to a value less than the maximum pump pressure to influence operation of the signal pressure operated valve and operate the servomotor under low load conditions.