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:
Dec. 19, 2006
Filed:
Sep. 29, 2004
Louis Bigo, Compiegne, FR;
Jean-pierre Lebrun, Monceaux, FR;
Jean-philippe Raisin, Gouvieux, FR;
Eric Gest, Compiegne, FR;
Louis Bigo, Compiegne, FR;
Jean-Pierre Lebrun, Monceaux, FR;
Jean-Philippe Raisin, Gouvieux, FR;
Eric Gest, Compiegne, FR;
Poclain Hydraulics Industrie, Verberie, FR;
Abstract
The circuit includes a main pump, a hydraulic motor, two main ducts, a selector for connecting the main ducts to the main pump or to a reservoir or for isolating them therefrom, a boost duct, and two pressure limiters disposed between the main ducts. A relief valve device that can take up a retention position and a relief position in which it connects one main duct () to a relief enclosure can take up its relief position when, with the selector isolating the main ducts from the main pump and from the reservoir, the difference between the pressure in the main duct to which the control duct is connected and a relief pressure higher than the boost pressure changes sign.