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. 21, 1981
Filed:
Sep. 28, 1979
Applicant:
Inventor:
Paul Aubert, Clamart, FR;
Assignee:
Regie Nationale des Usines Renault, Boulogne-Billancourt, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
137115 ; 137509 ;
Abstract
A multi-level pressure regulating valve for a hydraulic control circuit. It includes a three-level or four-level pressure regulating valve utilizing an intermediate chamber which is fed with fluid through two parallel ducts, each having its own throttling device.