Inventor · disambiguated record
Joseph L. Pfaff
Also filed as: PFAFF JOSEPH · PFAFF JOSEPH L · PFAFF JOSEPH LAWRENCE
41 granted patents·3 pending applications·1,568 citations·filing 1994–2018
98Inventor score
Files withHUSCO INT INC30INCOVA TECHNOLOGIES INC4BRIGGS & STRATTON CORP3PFAFF JOSEPH L3GAS RES INST1
Top patents by PatentIndex Score
44 records- 0199US7487707B2Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valveHUSCO INT INC·Filed 2006·Granted Feb 10, 2009·63 cites·27 claims
- 0299US6467264B1Hydraulic circuit with a return line metering valve and method of operationHUSCO INT INC·Filed 2001·Granted Oct 22, 2002·169 cites·28 claims
- 0398US7905088B2Energy recovery and reuse techniques for a hydraulic systemINCOVA TECHNOLOGIES INC·Filed 2007·Granted Mar 15, 2011·64 cites·32 claims
- 0497US7823379B2Energy recovery and reuse methods for a hydraulic systemHUSCO INT INC·Filed 2007·Granted Nov 2, 2010·46 cites·26 claims
- 0597US6880332B2Method of selecting a hydraulic metering mode for a function of a velocity based control systemHUSCO INT INC·Filed 2002·Granted Apr 19, 2005·62 cites·50 claims
- 0697US6732512B2Velocity based electronic control system for operating hydraulic equipmentHUSCO INT INC·Filed 2002·Granted May 11, 2004·63 cites·25 claims
- 0797US6715402B2Hydraulic control circuit for operating a split actuator mechanical mechanismHUSCO INT INC·Filed 2002·Granted Apr 6, 2004·60 cites·26 claims
- 0897US5606851ABattery-powered lawn cutting systemBRIGGS & STRATTON CORP·Filed 1995·Granted Mar 4, 1997·143 cites·38 claims
- 0995US6745992B2Pilot operated control valve having a poppet with integral pressure compensating mechanismHUSCO INT INC·Filed 2002·Granted Jun 8, 2004·72 cites·42 claims
- 1095US6705079B1Apparatus for controlling bounce of hydraulically powered equipmentHUSCO INT INC·Filed 2002·Granted Mar 16, 2004·46 cites·21 claims
- 1195US5713320AInternal combustion engine starting apparatus and processGAS RES INST·Filed 1996·Granted Feb 3, 1998·138 cites·18 claims
- 1294US7406982B2Hydraulic system control method using a differential pressure compensated flow coefficientHUSCO INT INC·Filed 2005·Granted Aug 5, 2008·25 cites·16 claims
- 1394US5619845ABattery-powered lawn cutting systemBRIGGS & STRATTON CORP·Filed 1995·Granted Apr 15, 1997·69 cites·2 claims
- 1493US7380398B2Hydraulic metering mode transitioning technique for a velocity based control systemHUSCO INT INC·Filed 2006·Granted Jun 3, 2008·22 cites·22 claims
- 1593US7296404B2Apparatus for controlling deceleration of hydraulically powered equipmentHUSCO INT INC·Filed 2005·Granted Nov 20, 2007·34 cites·21 claims
- 1693US6457487B1Hydraulic system with three electrohydraulic valves for controlling fluid flow to a loadHUSCO INT INC·Filed 2001·Granted Oct 1, 2002·42 cites·12 claims
- 1792US7089733B1Hydraulic control valve system with electronic load sense controlHUSCO INT INC·Filed 2005·Granted Aug 15, 2006·41 cites·17 claims
- 1892US6170241B1Microprocessor controlled motor controller with current limiting protectionTECUMSEH PRODUCTS CO·Filed 1997·Granted Jan 9, 2001·130 cites·20 claims
- 1990US9032724B2Command based method for allocating fluid flow from a plurality of pumps to multiple hydraulic functionsPFAFF JOSEPH L·Filed 2011·Granted May 19, 2015·11 cites·37 claims
- 2090US8215107B2Flow summation system for controlling a variable displacement hydraulic pumpPFAFF JOSEPH L·Filed 2010·Granted Jul 10, 2012·9 cites·24 claims
- 2189US9091281B2System for allocating fluid from multiple pumps to a plurality of hydraulic functions on a priority basisQUINNELL COREY K·Filed 2012·Granted Jul 28, 2015·16 cites·36 claims
- 2288US7874152B2Hydraulic system with compensation for kinematic position changes of machine membersINCOVA TECHNOLOGIES INC·Filed 2008·Granted Jan 25, 2011·14 cites·23 claims
- 2386US7857281B2Electrohydraulic valve control circuit with magnetic hysteresis compensationINCOVA TECHNOLOGIES INC·Filed 2006·Granted Dec 28, 2010·13 cites·19 claims
- 2486US6763661B2Apparatus and method for providing vibration to an appendage of a work vehicleHUSCO INT INC·Filed 2002·Granted Jul 20, 2004·24 cites·26 claims
- 2584US9303387B2Hydraulic system with open loop electrohydraulic pressure compensationHUSCO INT INC·Filed 2012·Granted Apr 5, 2016·10 cites·42 claims
- 2684US8256739B2Poppet valve operated by an electrohydraulic poppet pilot valvePFAFF JOSEPH L·Filed 2009·Granted Sep 4, 2012·12 cites·24 claims
- 2782US7093383B2Automatic hydraulic load leveling system for a work vehicleHUSCO INT INC·Filed 2004·Granted Aug 22, 2006·30 cites·25 claims
- 2881US6779340B2Method of sharing flow of fluid among multiple hydraulic functions in a velocity based control systemHUSCO INT INC·Filed 2002·Granted Aug 24, 2004·19 cites·20 claims
- 2979US7753078B2Hybrid hydraulic joystick with an integral pressure sensor and an outlet portHUSCO INT INC·Filed 2008·Granted Jul 13, 2010·8 cites·13 claims
- 3079US6976357B1Conduit loss compensation for a distributed electrohydraulic systemHUSCO INT INC·Filed 2004·Granted Dec 20, 2005·17 cites·24 claims
- 3177US7377480B2Electrohydraulic valve servomechanism with adaptive resistance estimatorHUSCO INT INC·Filed 2005·Granted May 27, 2008·11 cites·16 claims
- 3276US7984890B2Pilot operated valve with fast closing poppetINCOVA TECHNOLOGIES INC·Filed 2008·Granted Jul 26, 2011·18 cites·20 claims
- 3373US5445014AElectronic engine load and revolution sensing deviceBRIGGS & STRATTON CORP·Filed 1994·Granted Aug 29, 1995·34 cites·33 claims
- 3472US7753077B2Hybrid hydraulic joystick for electrically operating valvesHUSCO INT INC·Filed 2007·Granted Jul 13, 2010·7 cites·20 claims
- 3570US6640163B1Operating system for a programmable controller of a hydraulic systemHUSCO INT INC·Filed 2002·Granted Oct 28, 2003·16 cites·17 claims
- 3664US7373869B2Hydraulic system with mechanism for relieving pressure trapped in an actuatorHUSCO INT INC·Filed 2006·Granted May 20, 2008·4 cites·25 claims
- 3762US7210291B2Priority communication protocol for a distributed electrohydraulic system having multiple controllersHUSCO INT INC·Filed 2006·Granted May 1, 2007·2 cites·12 claims
- 3855US7194855B2Communication protocol for a distributed electrohydraulic system having multiple controllersHUSCO INT INC·Filed 2004·Granted Mar 27, 2007·4 cites·9 claims
- 3951US10268214B2Systems and methods for electrohydraulic valve calibrationHUSCO INT INC·Filed 2017·Granted Apr 23, 2019·0 cites·29 claims
- 4042US2018252243A1Systems and methods for dynamic response on mobile machinesHUSCO INT INC·Filed 2018·Application pending·0 cites
- 4140US2008034957A1Hydraulic Actuator Control Circuit With Pressure Operated Counterbalancing ValvesSTEPHENSON DWIGHT B·Filed 2006·Application pending·0 cites
- 4239US2007157980A1Pilot operated control valve having a two stage poppetHUSCO INT INC·Filed 2006·Application pending·0 cites
- 4337US10072679B2Systems and methods for selectively engaged regeneration of a hydraulic systemHUSCO INT INC·Filed 2015·Granted Sep 11, 2018·0 cites·27 claims
- 4435US9752597B2Metered fluid source connection to downstream functions in PCLS systemsHUSCO INT INC·Filed 2015·Granted Sep 5, 2017·0 cites·44 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →