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:
Nov. 22, 2005
Filed:
May. 15, 2002
Stephan P. G. Deneir, Moorslede, BE;
Steven C. Young, Lancaster, PA (US);
Stephan P. G. Deneir, Moorslede, BE;
Steven C. Young, Lancaster, PA (US);
CNH America LLC, Racine, WI (US);
Abstract
A control arrangement for a hydraulic system is disclosed. The system comprises a variable displacement hydraulic pump (), which is connected with a hydraulic drive motor () by a supply line () and a return line (). The system also includes a pump controller () which is adapted to vary the displacement of the pump (). The control arrangement includes a first feedback element in the form of an oil temperature sensor (), which provides the pump controller () feedback of the evolution of the oil temperature. The pump controller () is adapted in vary the displacement of the pump () in response to said feedback. A second feedback element is constituted by a pressure limiter valve (), which provides to the pump controller () feedback of the pressure in at least a feedback portion () of the return line ().