Pfaff; Joseph L

Patent Applications and Registrations

Patent applications and USPTO patent grants for Pfaff; Joseph L.The latest application filed is for "systems and methods for dynamic response on mobile machines".

Company Profile

0.38.37

Pfaff; Joseph L - Wauwatosa WI
Pfaff; Joseph L. - Wauwatosa WI
Pfaff; Joseph L. - Brookfield WI

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Systems and methods for electrohydraulic valve calibration Grant 10,268,214 - Pfaff	2019-04-23
Systems And Methods For Dynamic Response On Mobile Machines App 20180252243 - Pfaff; Joseph L. ; et al.	2018-09-06
Systems And Methods For Electrohydraulic Valve Calibration App 20170262001 - Pfaff; Joseph L	2017-09-14
Metered fluid source connection to downstream functions in PCLS systems Grant 9,752,597 - Buschkopf , et al. September 5, 2	2017-09-05
Metered Fluid Source Connection To Downstream Functions In Pcls Systems App 20170074293 - BUSCHKOPF; CASEY ; et al.	2017-03-16
Hydraulic system with open loop electrohydraulic pressure compensation Grant 9,303,387 - Pfaff , et al. April 5, 2	2016-04-05
System for allocating fluid from multiple pumps to a plurality of hydraulic functions on a priority basis Grant 9,091,281 - Quinnell , et al. July 28, 2	2015-07-28
Command based method for allocating fluid flow from a plurality of pumps to multiple hydraulic functions Grant 9,032,724 - Pfaff , et al. May 19, 2	2015-05-19
Hydraulic System With Open Loop Electrohydraulic Pressure Compensation App 20140116038 - Pfaff; Joseph L. ; et al.	2014-05-01
Multiple Function Hydraulic System With A Variable Displacement Pump And A Hydrostatic Pump-motor App 20140060032 - Pfaff; Joseph L. ; et al.	2014-03-06
System For Allocating Fluid From Multiple Pumps To A Plurality Of Hydraulic Functions On A Priority Basis App 20120233996 - Quinnell; Corey K. ; et al.	2012-09-20
Poppet valve operated by an electrohydraulic poppet pilot valve Grant 8,256,739 - Pfaff September 4, 2	2012-09-04
Flow summation system for controlling a variable displacement hydraulic pump Grant 8,215,107 - Pfaff , et al. July 10, 2	2012-07-10
Flow Summation System For Controlling A Variable Displacement Hydraulic Pump App 20120085440 - Pfaff; Joseph L. ; et al.	2012-04-12
Command Based Method For Allocating Fluid Flow From A Plurality Of Pumps To Multiple Hydraulic Functions App 20110308242 - Pfaff; Joseph L. ; et al.	2011-12-22
Pilot operated valve with fast closing poppet Grant 7,984,890 - Pfaff , et al. July 26, 2	2011-07-26
Energy recovery and reuse techniques for a hydraulic system Grant 7,905,088 - Stephenson , et al. March 15, 2	2011-03-15
Hydraulic system with compensation for kinematic position changes of machine members Grant 7,874,152 - Pfaff January 25, 2	2011-01-25
Electrohydraulic valve control circuit with magnetic hysteresis compensation Grant 7,857,281 - Pfaff December 28, 2	2010-12-28
Energy recovery and reuse methods for a hydraulic system Grant 7,823,379 - Hamkins , et al. November 2, 2	2010-11-02
Hybrid hydraulic joystick with an integral pressure sensor and an outlet port Grant 7,753,078 - Bertolasi , et al. July 13, 2	2010-07-13
Hybrid hydraulic joystick for electrically operating valves Grant 7,753,077 - Bertolasi , et al. July 13, 2	2010-07-13
Poppet Valve Operated By An Electrohydraulic Poppet Pilot Valve App 20100155633 - Pfaff; Joseph L.	2010-06-24
Hydraulic System With Compensation For Kinematic Position Changes Of Machine Members App 20090272109 - Pfaff; Joseph L.	2009-11-05
Pilot Operated Valve With Fast Closing Poppet App 20090212244 - Pfaff; Joseph L. ; et al.	2009-08-27
Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve Grant 7,487,707 - Pfaff , et al. February 10, 2	2009-02-10
Hybrid Hydraulic Joystick With An Integral Pressure Sensor And An Outlet Port App 20080256941 - Bertolasi; Brian R. ; et al.	2008-10-23
Hybrid Hydraulic Joystick For Electrically Operating Valves App 20080257090 - Bertolasi; Brian R. ; et al.	2008-10-23
Hydraulic system control method using a differential pressure compensated flow coefficient Grant 7,406,982 - Pfaff , et al. August 5, 2	2008-08-05
Hydraulic metering mode transitioning technique for a velocity based control system Grant 7,380,398 - Pfaff June 3, 2	2008-06-03
Electrohydraulic valve servomechanism with adaptive resistance estimator Grant 7,377,480 - Tabor , et al. May 27, 2	2008-05-27
Hydraulic system with mechanism for relieving pressure trapped in an actuator Grant 7,373,869 - Pfaff , et al. May 20, 2	2008-05-20
Energy Recovery And Reuse Techniques For A Hydraulic System App 20080110166 - Stephenson; Dwight B. ; et al.	2008-05-15
Energy Recovery And Reuse Methods For A Hydraulic System App 20080110165 - Hamkins; Eric P. ; et al.	2008-05-15
Hydraulic Valve Assembly With A Pressure Compensated Directional Spool Valve And A Regeneration Shunt Valve App 20080072749 - Pfaff; Joseph L. ; et al.	2008-03-27
Electrohydraulic Valve Control Circuit With Magnetic Hysteresis Compensation App 20080042087 - Pfaff; Joseph L.	2008-02-21
Hydraulic Actuator Control Circuit With Pressure Operated Counterbalancing Valves App 20080034957 - Stephenson; Dwight B. ; et al.	2008-02-14
Apparatus for controlling deceleration of hydraulically powered equipment Grant 7,296,404 - Pfaff November 20, 2	2007-11-20
Hydraulic metering mode transitioning technique for a velocity based control system App 20070227136 - Pfaff; Joseph L.	2007-10-04
Hydraulic system with mechanism for relieving pressure trapped in an actuator App 20070209503 - Pfaff; Joseph L. ; et al.	2007-09-13
Pilot operated control valve having a two stage poppet App 20070157980 - Stephenson; Dwight B. ; et al.	2007-07-12
Apparatus for controlling deceleration of hydraulically powered equipment App 20070130927 - Pfaff; Joseph L.	2007-06-14
Priority communication protocol for a distributed electrohydraulic system having multiple controllers Grant 7,210,291 - Pfaff May 1, 2	2007-05-01
Communication protocol for a distributed electrohydraulic system having multiple controllers Grant 7,194,855 - Pfaff March 27, 2	2007-03-27
Hydraulic Control Valve System With Electronic Load Sense Control App 20060191262 - Jackson; Randall S. ; et al.	2006-08-31
Priority communication protocol for a distributed electrohydraulic system having multiple controllers App 20060185354 - Pfaff; Joseph L.	2006-08-24
Automatic hydraulic load leveling system for a work vehicle Grant 7,093,383 - Mennen , et al. August 22, 2	2006-08-22
Hydraulic control valve system with electronic load sense control Grant 7,089,733 - Jackson , et al. August 15, 2	2006-08-15
Communication protocol for a distributed electrohydraulic system having multiple controllers App 20060086088 - Pfaff; Joseph L.	2006-04-27
Conduit Loss Compensation For A Distributed Electrohydraulic System App 20050284144 - Pfaff, Joseph L.	2005-12-29
Conduit loss compensation for a distributed electrohydraulic system Grant 6,976,357 - Pfaff December 20, 2	2005-12-20
Automatic hydraulic load leveling system for a work vehicle App 20050210713 - Mennen, Kenneth C. ; et al.	2005-09-29
Hydraulic system control method using a differential pressure compensated flow coefficient App 20050211312 - Pfaff, Joseph L. ; et al.	2005-09-29
Electrohydraulic valve servomechanism with adaptive resistance estimator App 20050211936 - Tabor, Keith A. ; et al.	2005-09-29
Method of selecting a hydraulic metering mode for a function of a velocity based control system Grant 6,880,332 - Pfaff , et al. April 19, 2	2005-04-19
Method of sharing flow of fluid among multiple hydraulic functions in a velocity based control system Grant 6,779,340 - Pfaff , et al. August 24, 2	2004-08-24
Apparatus and method for providing vibration to an appendage of a work vehicle Grant 6,763,661 - Tabor , et al. July 20, 2	2004-07-20
Pilot operated control valve having a poppet with integral pressure compensating mechanism Grant 6,745,992 - Yang , et al. June 8, 2	2004-06-08
Velocity based electronic control system for operating hydraulic equipment Grant 6,732,512 - Pfaff , et al. May 11, 2	2004-05-11
Hydraulic control circuit for operating a split actuator mechanical mechanism Grant 6,715,402 - Pfaff , et al. April 6, 2	2004-04-06
Method of selecting a hydraulic metering mode for a function of a velocity based control system App 20040055454 - Pfaff, Joseph L. ; et al.	2004-03-25
Apparatus For Controlling Bounce Of Hydraulically Powered Equipment App 20040055455 - Tabor, Keith A. ; et al.	2004-03-25
Velocity Based Electronic Control System For Operating Hydraulic Equipment App 20040055288 - Pfaff, Joseph L. ; et al.	2004-03-25
Method of sharing flow of fluid among multiple hydraulic functions in a velocity based control system App 20040055289 - Pfaff, Joseph L. ; et al.	2004-03-25
Apparatus for controlling bounce of hydraulically powered equipment Grant 6,705,079 - Tabor , et al. March 16, 2	2004-03-16
Pilot operated control valve having a poppet with integral pressure compensating mechanism App 20040021103 - Yang, Xiaolong ; et al.	2004-02-05
Apparatus and method for providing vibration to an appendage of a work vehicle App 20030209134 - Tabor, Keith A. ; et al.	2003-11-13
Operating system for a programmable controller of a hydraulic system Grant 6,640,163 - Pfaff , et al. October 28, 2	2003-10-28
Hydraulic control circuit for operating a split actuator mechanical mechanism App 20030159577 - Pfaff, Joseph L. ; et al.	2003-08-28
Battery-powered lawn cutting system Grant 5,619,845 - Bruener , et al. April 15, 1	1997-04-15
Battery-powered lawn cutting system Grant 5,606,851 - Bruener , et al. March 4, 1	1997-03-04
Electronic engine load and revolution sensing device Grant 5,445,014 - Fiorenza, II , et al. August 29, 1	1995-08-29

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