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. 04, 2001
Filed:
Mar. 23, 1999
Gerhard Beutler, Nagold, DE;
Hermann Maier, Waldachtal, DE;
Brueninghaus Hydromatik GmbH, Elchingen, DE;
Abstract
A power- and moment-regulating system for at least two adjustable hydraulic pumps (,). A hydraulic servo control apparatus (,) continuously adjusts delivery as a function of pressure in a delivery pressure line (,) and pressures in control lines (,). Each servo control apparatus (,) is provided with a moment valve (,) having a valve piston (,) which moves in a valve sleeve (,) forming a valve seat and whose closure force is determined by a measuring spring (,) which is connected to pump actuator (,) and is preloaded depending upon the set delivery rate. The pressure in control line (,) or pressure in control lines of the other hydraulic pump(s) (,) act both on the valve piston (,) and on valve screen (,) of moment valve (,) associated with the given hydraulic pump (,).