Inventor · disambiguated record
David L. Speirs
Also filed as: SPEIRS DAVID · SPEIRS DAVID L
35 granted patents·3 pending applications·190 citations·filing 1992–2024
96Inventor score
Files withWALBRO LLC19WALBRO ENGINE MANAGEMENT LLC7MICROSOFT TECHNOLOGY LICENSING LLC3WALBRO CORP3GALKA WILLIAM E2
Top patents by PatentIndex Score
38 records- 0197US11073122B2Low pressure fuel and air charge forming device for a combustion engineWALBRO LLC·Filed 2017·Granted Jul 27, 2021·23 cites·20 claims
- 0290US8939736B2Fuel pump assemblyISRAELSON KEVIN L·Filed 2011·Granted Jan 27, 2015·12 cites·22 claims
- 0389US11008951B2Low pressure fuel injection system for a multi-cylinder light-duty internal combustion engineWALBRO LLC·Filed 2018·Granted May 18, 2021·3 cites·20 claims
- 0488US9765724B2Fuel injected engine systemWALBRO LLC·Filed 2016·Granted Sep 19, 2017·3 cites·13 claims
- 0584US12385457B2Method of controlling a fuel injectorWALBRO LLC·Filed 2024·Granted Aug 12, 2025·0 cites·18 claims
- 0683US9567944B2Layered diaphragmWALBRO ENGINE MANAGEMENT LLC·Filed 2013·Granted Feb 14, 2017·3 cites·33 claims
- 0782US10549631B2Fuel pump assembly with removable and/or movable supportsWALBRO LLC·Filed 2018·Granted Feb 4, 2020·3 cites·20 claims
- 0881US9217403B1Level sensor mountWALBRO ENGINE MANAGEMENT LLC·Filed 2013·Granted Dec 22, 2015·4 cites·19 claims
- 0980US12012920B2Charge forming device with throttle valveWALBRO LLC·Filed 2023·Granted Jun 18, 2024·0 cites·9 claims
- 1079US12123374B2Fuel supply device with injector and vapor managementWALBRO LLC·Filed 2024·Granted Oct 22, 2024·0 cites·20 claims
- 1179US10125696B2Charge forming device with throttle valve adjusterWALBRO LLC·Filed 2016·Granted Nov 13, 2018·2 cites·20 claims
- 1277US11927164B2Low pressure fuel and air charge forming device for a combustion engineWALBRO LLC·Filed 2022·Granted Mar 12, 2024·0 cites·20 claims
- 1376US11885430B2Electromechanical valve and method of assemblyWALBRO LLC·Filed 2019·Granted Jan 30, 2024·2 cites·18 claims
- 1476US8933691B2Rotary position sensorGALKA WILLIAM E·Filed 2010·Granted Jan 13, 2015·5 cites·13 claims
- 1576US7264230B2Carburetor and solenoid assemblies and methods of assembling the sameWALBRO ENGINE MANAGEMENT LLC·Filed 2005·Granted Sep 4, 2007·15 cites·14 claims
- 1674US9371786B2Fuel injected engine systemCASONI MASSIMO·Filed 2012·Granted Jun 21, 2016·5 cites·18 claims
- 1773US11920544B2Fuel supply device with injector and vapor managementWALBRO LLC·Filed 2022·Granted Mar 5, 2024·0 cites·21 claims
- 1873US5236634ACarburetor needle valve adjustment limiter cap and method of adjusting fuel flowWALBRO CORP·Filed 1992·Granted Aug 17, 1993·40 cites·35 claims
- 1972US11536235B2Low pressure fuel and air charge forming device for a combustion engineWALBRO LLC·Filed 2021·Granted Dec 27, 2022·0 cites·11 claims
- 2071US11781493B2Throttle body with fluid flow controlWALBRO LLC·Filed 2022·Granted Oct 10, 2023·0 cites·16 claims
- 2171US9464577B2Rotary position sensor with bufferGALKA WILLIAM E·Filed 2012·Granted Oct 11, 2016·3 cites·18 claims
- 2271US5322645ACarburetor needle valve adjustment limiter cap and method of useWALBRO CORP·Filed 1993·Granted Jun 21, 1994·36 cites·34 claims
- 2367US11655788B2Charge forming device with throttle valveWALBRO LLC·Filed 2020·Granted May 23, 2023·0 cites·9 claims
- 2467US10259313B2Fuel pump assembly with removable supportsWALBRO LLC·Filed 2017·Granted Apr 16, 2019·1 cites·13 claims
- 2562US11268455B2Throttle body with fluid flow controlWALBRO LLC·Filed 2017·Granted Mar 8, 2022·0 cites·18 claims
- 2662US6402124B1Carburetor fuel mixture adjustment assemblyWALBRO CORP·Filed 2000·Granted Jun 11, 2002·20 cites·18 claims
- 2756US7827970B2Vapor separatorWALBRO ENGINE MANAGEMENT LLC·Filed 2008·Granted Nov 9, 2010·3 cites·35 claims
- 2855US11093237B2Build isolation system in a multi-system environmentMICROSOFT TECHNOLOGY LICENSING LLC·Filed 2019·Granted Aug 17, 2021·0 cites·6 claims
- 2955US10001095B2Retainer with grounding feature for fuel system componentWALBRO ENGINE MANAGEMENT LLC·Filed 2014·Granted Jun 19, 2018·0 cites·13 claims
- 3054US9553440B2Wire seal assemblyWALBRO ENGINE MANAGEMENT LLC·Filed 2014·Granted Jan 24, 2017·2 cites·15 claims
- 3151US8061322B2Engine starting system with throttle overrideKING ERIC L·Filed 2008·Granted Nov 22, 2011·2 cites·22 claims
- 3249US10372441B2Build isolation system in a multi-system environmentMICROSOFT TECHNOLOGY LICENSING LLC·Filed 2017·Granted Aug 6, 2019·0 cites·9 claims
- 3345US12421924B2Fuel supply assembly with in-tank reservoirWALBRO LLC·Filed 2021·Granted Sep 23, 2025·0 cites·14 claims
- 3445US8988995B2Network traffic managementFULLARTON SONYA·Filed 2007·Granted Mar 24, 2015·1 cites·8 claims
- 3543US6715738B1Fuel-air mixture control apparatusWALBRO ENGINE MANAGEMENT LLC·Filed 2002·Granted Apr 6, 2004·2 cites·8 claims
- 3641US2023332566A1Jet pump and filter assemblyWALBRO LLC·Filed 2021·Application pending·0 cites
- 3739US2022195949A1Charge forming device with a throttle valve providing controlled air flowWALBRO LLC·Filed 2021·Application pending·0 cites
- 3834US2018150286A1Cross-machine build scheduling systemMICROSOFT TECHNOLOGY LICENSING LLC·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →