Inventor · disambiguated record
Leland H. Lyon
Also filed as: LYON LELAND · LYON LELAND H
43 granted patents·4 pending applications·639 citations·filing 1987–2024
98Inventor score
Top patents by PatentIndex Score
47 records- 0184US8141663B2Down hole hammer having elevated exhaustLYON LELAND H·Filed 2011·Granted Mar 27, 2012·8 cites·6 claims
- 0278US10100578B2Pressure control check valve for a down-the-hole drill hammerCENTER ROCK INC·Filed 2014·Granted Oct 16, 2018·5 cites·26 claims
- 0376US8011455B2Down hole hammer having elevated exhaustATLAS COPCO SECOROC LLC·Filed 2009·Granted Sep 6, 2011·14 cites·8 claims
- 0473US8622152B2Down-the-hole drill hammer having a sliding exhaust check valveLYON LELAND H·Filed 2010·Granted Jan 7, 2014·5 cites·25 claims
- 0573US5562170ASelf-lubricating, fluid-actuated, percussive down-the-hole drillINGERSOLL RAND CO·Filed 1995·Granted Oct 8, 1996·67 cites·10 claims
- 0670US12392202B2Down-the-hole drill hammer having a ribbed exhaust tubeCENTER ROCK INC·Filed 2023·Granted Aug 19, 2025·0 cites·19 claims
- 0770US10669781B2Down-the-hole drill hammer having a roller bearing assemblyCENTER ROCK INC·Filed 2017·Granted Jun 2, 2020·1 cites·20 claims
- 0870US8439135B2Down-the-hole drill hammer having an extendable drill bit assemblyLYON LELAND H·Filed 2011·Granted May 14, 2013·4 cites·20 claims
- 0969US11078736B2Flow diversion sub for a down-the-hole drill hammerCENTER ROCK INC·Filed 2018·Granted Aug 3, 2021·1 cites·21 claims
- 1068US5390749AApparatus for positioning a split retaining ring in a down-hole percussive drillINGERSOLL RAND CO·Filed 1994·Granted Feb 21, 1995·44 cites·10 claims
- 1167US6799641B1Percussive drill with adjustable flow controlATLAS COPCO AB·Filed 2003·Granted Oct 5, 2004·34 cites·20 claims
- 1266US5143162ADevice for removing debris from a drillholeINGERSOLL RAND CO·Filed 1991·Granted Sep 1, 1992·47 cites·11 claims
- 1364USD872142SDrill bit for a down-the-hole drill hammerCENTER ROCK INC·Filed 2017·Granted Jan 7, 2020·9 cites·1 claims
- 1462US8915314B2Down-the-hole drill drive couplingLYON LELAND H·Filed 2009·Granted Dec 23, 2014·4 cites·6 claims
- 1562US5325926AReversible casing for a down-the-hole percussive apparatusINGERSOLL RAND CO·Filed 1993·Granted Jul 5, 1994·35 cites·10 claims
- 1661US6135216AVenting and sealing system for down-hole drillsINGERSOLL RAND CO·Filed 1999·Granted Oct 24, 2000·40 cites·22 claims
- 1761US5711205ASelf-lubricating, fluid-actuated, percussive down-the-hole drillINGERSOLL RAND CO·Filed 1996·Granted Jan 27, 1998·37 cites·1 claims
- 1860US9938774B2Non-rotating drill bit for a down-the-hole drill hammerCENTER ROCK INC·Filed 2013·Granted Apr 10, 2018·1 cites·16 claims
- 1960US8631884B2Pressure reversing valve assembly for a down-the-hole percussive drilling apparatusLYON LELAND H·Filed 2010·Granted Jan 21, 2014·1 cites·20 claims
- 2060US7159676B2Fluid distributor device for down-hole-drillsATLAS COPCO SECOROC AB·Filed 2002·Granted Jan 9, 2007·22 cites·27 claims
- 2157US10024103B2Down-the-hole drill hammer having a roller ramp clutchCENTER ROCK INC·Filed 2016·Granted Jul 17, 2018·1 cites·20 claims
- 2257US8302707B2Down-the-hole drill reverse exhaust systemLYON LELAND·Filed 2009·Granted Nov 6, 2012·6 cites·18 claims
- 2357US5139095AMethod for removing debris from a drillholeINGERSOLL RAND CO·Filed 1991·Granted Aug 18, 1992·34 cites·11 claims
- 2456US8800690B2Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assemblyLYON LELAND H·Filed 2009·Granted Aug 12, 2014·4 cites·37 claims
- 2556US2025109634A1Down-the-hole drill hammer having a coaxial accumulatorCENTER ROCK INC·Filed 2024·Application pending·0 cites
- 2654US8397839B2Self-indexing down-the-hole drillLYON LELAND H·Filed 2009·Granted Mar 19, 2013·3 cites·22 claims
- 2754US5794516APiston for a self-lubricating, fluid-actuated, percussive down-the-hole drillINGERSOLL RAND CO·Filed 1995·Granted Aug 18, 1998·29 cites·3 claims
- 2854US5682957AWater separator for a down hole drillINGERSOLL RAND CO·Filed 1995·Granted Nov 4, 1997·33 cites·8 claims
- 2953US5240083ADevice for removing drillhole debrisINGERSOLL RAND CO·Filed 1992·Granted Aug 31, 1993·26 cites·20 claims
- 3053US2024254860A1Down-the-hole drill hammer having a piston follower valveCENTER ROCK INC·Filed 2024·Application pending·0 cites
- 3152US5566771AReversible casing for a self-lubricating, fluid-actuated, percussive down-the-hole drillINGERSOLL RAND CO·Filed 1995·Granted Oct 22, 1996·31 cites·7 claims
- 3252US5020610ARemovable filter fluid flow shutoff apparatusINGERSOLL RAND CO·Filed 1990·Granted Jun 4, 1991·19 cites·8 claims
- 3351US9821422B2Drill bit for a down-the-hole drill hammer having spirally arranged cutting insertsCENTER ROCK INC·Filed 2015·Granted Nov 21, 2017·0 cites·13 claims
- 3450US7665549B2Entrainment fluid channeling device for a down-hole drill stringATLAS COPCO SECOROC AB·Filed 2005·Granted Feb 23, 2010·2 cites·32 claims
- 3549US5735358AIndexing percussive drilling bitINGERSOLL RAND CO·Filed 1996·Granted Apr 7, 1998·27 cites·5 claims
- 3646US2008067758A1Disassembleable Washer Device for Down-Hole DrillsLYON LELAND H·Filed 2005·Application pending·0 cites
- 3745US5139093AWrap spring clutch for percussive apparatusINGERSOLL RAND CO·Filed 1991·Granted Aug 18, 1992·18 cites·11 claims
- 3844USD656974SDrill bitLYON LELAND H·Filed 2011·Granted Apr 3, 2012·5 cites·1 claims
- 3942US6810974B2Quick release drill bit for down-hole drillsATLAS COPCO AB·Filed 2001·Granted Nov 2, 2004·6 cites·19 claims
- 4039USD873316SNon-rotating drill bit for a down-the-hole drill hammerCENTER ROCK INC·Filed 2017·Granted Jan 21, 2020·2 cites·1 claims
- 4138US2008078584A1Bit assembly for down-hole drillsATLAS COPCO SECOROC AB·Filed 2006·Application pending·0 cites
- 4236US7832504B2Exhaust valve and bit assembly for down-hole percussive drillsATLAS COPCO SECOROC LLC·Filed 2006·Granted Nov 16, 2010·0 cites·30 claims
- 4333US5191946AWrap spring clutch for percussive apparatusINGERSOLL RAND CO·Filed 1992·Granted Mar 9, 1993·3 cites·2 claims
- 4432US5342520AFilter for a rockdrillINGERSOLL RAND CO·Filed 1992·Granted Aug 30, 1994·3 cites·10 claims
- 4531US5196118APercussion tool fluid filter apparatusINGERSOLL RAND CO·Filed 1992·Granted Mar 23, 1993·5 cites·22 claims
- 4624US4846634AWater to emulsion transformerINGERSOLL RAND CO·Filed 1987·Granted Jul 11, 1989·3 cites·14 claims
- 4720US5277098AOn-off valve for hydraulic rockdrillINGERSOLL RAND CO·Filed 1992·Granted Jan 11, 1994·0 cites·6 claims
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