Inventor · disambiguated record
Richard J. Lech
Also filed as: LECH RICHARD J
28 granted patents·636 citations·filing 1975–2012
97Inventor score
Top patents by PatentIndex Score
28 records- 0198US6029445AVariable flow hydraulic systemCASE CORP·Filed 1999·Granted Feb 29, 2000·111 cites·21 claims
- 0295US4622803AHeader flotationCASE CO J I·Filed 1984·Granted Nov 18, 1986·59 cites·25 claims
- 0391US3962870AVariable volume dual pump circuitINT HARVESTER CO·Filed 1975·Granted Jun 15, 1976·43 cites·7 claims
- 0490US3985472ACombined fixed and variable displacement pump systemINT HARVESTER CO·Filed 1975·Granted Oct 12, 1976·64 cites·6 claims
- 0586US6354089B1Apparatus and method for cooling multiple fluids on a work vehicleCASE CORP·Filed 2000·Granted Mar 12, 2002·39 cites·31 claims
- 0684US7251934B2Work vehicle hydraulic systemCNH AMERICA LLC·Filed 2004·Granted Aug 7, 2007·23 cites·8 claims
- 0781US6474064B1Hydraulic system and method for regulating pressure equalization to suppress oscillation in heavy equipmentCASE CORP·Filed 2000·Granted Nov 5, 2002·26 cites·23 claims
- 0880US5471908AHydraulic system for backhoeCASE CORP·Filed 1994·Granted Dec 5, 1995·41 cites·12 claims
- 0978US6532738B2System for reducing boom swing oscillation in a backhoe assemblyCASE CORP·Filed 2001·Granted Mar 18, 2003·21 cites·41 claims
- 1077US9347200B2Fluid control system for work vehicleHENNEMANN MATTHEW J·Filed 2012·Granted May 24, 2016·7 cites·14 claims
- 1171US8353157B2Open center hydraulic systemCNH AMERICA LLC·Filed 2009·Granted Jan 15, 2013·4 cites·20 claims
- 1270US4942935AAuxiliary power steering systemCASE CO J I·Filed 1989·Granted Jul 24, 1990·24 cites·14 claims
- 1370US4050478ACombined fixed and variable displacement pump systemINT HARVESTER CO·Filed 1976·Granted Sep 27, 1977·23 cites·3 claims
- 1468US6941687B2Electronic control for swing dampingCNH AMERICA LLC·Filed 2001·Granted Sep 13, 2005·13 cites·9 claims
- 1566US6647721B2Hydraulic system for suppressing oscillation in heavy equipmentCASE LLC·Filed 2001·Granted Nov 18, 2003·16 cites·51 claims
- 1665US6640409B2Method for retrofitting a swing damping valve circuit to a work vehicleCASE CORP·Filed 2001·Granted Nov 4, 2003·14 cites·23 claims
- 1764US5413452AHydraulic system for a backhoe apparatusCASE CORP·Filed 1993·Granted May 9, 1995·32 cites·6 claims
- 1861US7891459B2Multiple ratio steering for loaderCNH AMERICA LLC·Filed 2007·Granted Feb 22, 2011·4 cites·20 claims
- 1960US5678469ACreeper drive systemCASE CORP·Filed 1995·Granted Oct 21, 1997·19 cites·9 claims
- 2059US6398227B1Ride control apparatus and methodCASE CORP·Filed 2000·Granted Jun 4, 2002·10 cites·22 claims
- 2156US4129148AClutch modulatorINT HARVESTER CO·Filed 1977·Granted Dec 12, 1978·11 cites·9 claims
- 2253US7674084B2Hydraulically cushioned backhoe boom bumper and travel limiterCNH AMERICA LLC·Filed 2007·Granted Mar 9, 2010·2 cites·20 claims
- 2351US7032332B2Method of controlling a backhoeCNH AMERICA LLC·Filed 2003·Granted Apr 25, 2006·4 cites·9 claims
- 2450US8142132B2Automatic over-center systemLECH RICHARD J·Filed 2009·Granted Mar 27, 2012·3 cites·19 claims
- 2543US6886278B2Hydraulic swing damping systemCNH AMERICA LLC·Filed 2003·Granted May 3, 2005·1 cites·4 claims
- 2640US6260467B1Hydraulic circuit providing plural swing rates in an earthworking construction machineCASE CORP·Filed 1999·Granted Jul 17, 2001·10 cites·21 claims
- 2732US6267548B1Automatic over center systemCASE CORP·Filed 1998·Granted Jul 31, 2001·6 cites·4 claims
- 2828US6128900AHydraulic fluid supply systemCASE CORP·Filed 1998·Granted Oct 10, 2000·6 cites·2 claims
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