Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Matthew J. Hennemann0
Richard J. Lech0
Date of Patent
August 7, 2007
0Patent Application Number
108110420
Date Filed
March 27, 2004
0Patent Primary Examiner
Patent abstract
A hybrid hydraulic system for a work vehicle is provided that includes a first fixed displacement hydraulic pump whose outlet is connected to a priority valve. The priority valve, in turn, directs the pump's flow to a first group of closed center backhoe valves on a primary circuit and a second group of open center loader valves on a secondary circuit. A second hydraulic pump is provided with independent load sensing capability to supplement fluid flow provided by the first pump.
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