Assignee
FLETCHER DAVID E
US·31 granted patents·1 pending application·102 citations·filing 2014–2017
Top patents by PatentIndex Score
32 records- 0197US9599234B1Sprung gate valveFLETCHER DAVID E·Filed 2015·Granted Mar 21, 2017·14 cites·19 claims
- 0295US9599246B2Magnetically actuated shut-off valveFLETCHER DAVID E·Filed 2015·Granted Mar 21, 2017·8 cites·8 claims
- 0391US10273978B2Low-cost evacuator for an engine having tuned Venturi gapsFLETCHER DAVID E·Filed 2015·Granted Apr 30, 2019·7 cites·35 claims
- 0488US10443627B2Vacuum producing device having a suction passageway and a discharge passageway entering through the same wallFLETCHER DAVID E·Filed 2016·Granted Oct 15, 2019·3 cites·12 claims
- 0587US10100720B2Crankcase ventilating evacuatorFLETCHER DAVID E·Filed 2016·Granted Oct 16, 2018·3 cites·18 claims
- 0687US9919689B2Bypass valve in an apparatus for producing vacuumFLETCHER DAVID E·Filed 2017·Granted Mar 20, 2018·6 cites·17 claims
- 0787US9732871B2Aspirated relief valve for a turbocharging systemFLETCHER DAVID E·Filed 2015·Granted Aug 15, 2017·4 cites·17 claims
- 0886US10239187B2Methods for post-mold processing a Venturi device or check valveFLETCHER DAVID E·Filed 2016·Granted Mar 26, 2019·3 cites·18 claims
- 0985US10422351B2Devices for producing vacuum using the venturi effect having a plurality of subpassageways and motive exits in the motive sectionFLETCHER DAVID E·Filed 2016·Granted Sep 24, 2019·3 cites·16 claims
- 1084US9841110B2Sprung gate valves movable by a solenoid actuatorFLETCHER DAVID E·Filed 2014·Granted Dec 12, 2017·6 cites·15 claims
- 1182US10513954B2Restrictors using the Venturi effectFLETCHER DAVID E·Filed 2016·Granted Dec 24, 2019·2 cites·22 claims
- 1282US10316864B2Devices for producing vacuum using the venturi effectFLETCHER DAVID E·Filed 2016·Granted Jun 11, 2019·3 cites·20 claims
- 1382USD821302SVenturi deviceFLETCHER DAVID E·Filed 2015·Granted Jun 26, 2018·14 cites·1 claims
- 1479US10167971B2Aspirated relief valve for a turbocharging systemFLETCHER DAVID E·Filed 2017·Granted Jan 1, 2019·2 cites·12 claims
- 1579US9879699B2Venturi devices with dual Venturi flow pathsFLETCHER DAVID E·Filed 2015·Granted Jan 30, 2018·2 cites·9 claims
- 1677US10107240B2Check valves and Venturi devices having the sameFLETCHER DAVID E·Filed 2016·Granted Oct 23, 2018·1 cites·22 claims
- 1776US10626888B2Dual Venturi deviceFLETCHER DAVID E·Filed 2015·Granted Apr 21, 2020·2 cites·23 claims
- 1876US10519984B2Noise attenuation in a Venturi device and/or check valvesFLETCHER DAVID E·Filed 2015·Granted Dec 31, 2019·2 cites·12 claims
- 1971USD780296SActuated valveFLETCHER DAVID E·Filed 2015·Granted Feb 28, 2017·8 cites·1 claims
- 2063USD802095SActuated valveFLETCHER DAVID E·Filed 2017·Granted Nov 7, 2017·5 cites·1 claims
- 2156US9915370B2Magnetically actuated shut-off valveFLETCHER DAVID E·Filed 2017·Granted Mar 13, 2018·0 cites·10 claims
- 2255USD821546SActuated valveFLETCHER DAVID E·Filed 2017·Granted Jun 26, 2018·3 cites·1 claims
- 2354US9863537B2Check valve with improved sealing memberFLETCHER DAVID E·Filed 2015·Granted Jan 9, 2018·0 cites·11 claims
- 2454US9845773B2Aspirator and ejector systemFLETCHER DAVID E·Filed 2014·Granted Dec 19, 2017·0 cites·20 claims
- 2554US9382826B1Noise attenuating member for noise attenuating units in enginesFLETCHER DAVID E·Filed 2015·Granted Jul 5, 2016·0 cites·21 claims
- 2650US2016061164A1Vacuum producer including an aspirator and an ejectorFLETCHER DAVID E·Filed 2014·Application pending·0 cites
- 2749US9657748B2Pneumatically actuated vacuum pump having multiple venturi gaps and check valvesFLETCHER DAVID E·Filed 2014·Granted May 23, 2017·0 cites·18 claims
- 2843US10024339B2Vacuum creation system having an ejector, pneumatic control valve and optionally an aspiratorFLETCHER DAVID E·Filed 2015·Granted Jul 17, 2018·0 cites·15 claims
- 2942USD796006SActuated valveFLETCHER DAVID E·Filed 2017·Granted Aug 29, 2017·1 cites·1 claims
- 3035USD796634SActuated valveFLETCHER DAVID E·Filed 2017·Granted Sep 5, 2017·0 cites·1 claims
- 3135USD796005SActuated valveFLETCHER DAVID E·Filed 2017·Granted Aug 29, 2017·0 cites·1 claims
- 3235USD795392SActuated valveFLETCHER DAVID E·Filed 2017·Granted Aug 22, 2017·0 cites·1 claims
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