Inventor · disambiguated record
David E. Fletcher
Also filed as: FLETCHER DAVID · FLETCHER DAVID E
72 granted patents·2 pending applications·225 citations·filing 1994–2022
99Inventor score
Top patents by PatentIndex Score
74 records- 0198US9915362B2Fluidic diode check valveHAMPTON KEITH·Filed 2017·Granted Mar 13, 2018·12 cites·16 claims
- 0297US9599234B1Sprung gate valveFLETCHER DAVID E·Filed 2015·Granted Mar 21, 2017·14 cites·19 claims
- 0395US9599246B2Magnetically actuated shut-off valveFLETCHER DAVID E·Filed 2015·Granted Mar 21, 2017·8 cites·8 claims
- 0494US11015498B2Crankcase ventilation system with a flow control device for on board diagnosticsDAYCO IP HOLDINGS LLC·Filed 2020·Granted May 25, 2021·4 cites·22 claims
- 0594US9534704B2Noise attenuation in a check valve unit or apparatus for producing vacuumHAMPTON KEITH·Filed 2014·Granted Jan 3, 2017·13 cites·21 claims
- 0692US10571030B2Valve gate within a Venturi gap of a Venturi device for producing vacuumHAMPTON KEITH·Filed 2017·Granted Feb 25, 2020·5 cites·19 claims
- 0792US9845899B2Sprung gate valves movable by an actuatorGRAICHEN BRIAN M·Filed 2014·Granted Dec 19, 2017·8 cites·16 claims
- 0891US11378211B2Quick connector with a replaceable restriction orificeDAYCO IP HOLDINGS LLC·Filed 2020·Granted Jul 5, 2022·2 cites·20 claims
- 0991US10273978B2Low-cost evacuator for an engine having tuned Venturi gapsFLETCHER DAVID E·Filed 2015·Granted Apr 30, 2019·7 cites·35 claims
- 1091US10132424B2Variable flow valve having metered flow orificeGRAICHEN BRIAN M·Filed 2016·Granted Nov 20, 2018·4 cites·18 claims
- 1191US9574677B2Solenoid-powered gate valveDAYCO IP HOLDINGS LLC·Filed 2014·Granted Feb 21, 2017·10 cites·21 claims
- 1289US9238388B2Tire pressure maintenance apparatus and systemFLETCHER DAVID·Filed 2013·Granted Jan 19, 2016·7 cites·20 claims
- 1388US10443627B2Vacuum 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
- 1487US10100720B2Crankcase ventilating evacuatorFLETCHER DAVID E·Filed 2016·Granted Oct 16, 2018·3 cites·18 claims
- 1587US9919689B2Bypass valve in an apparatus for producing vacuumFLETCHER DAVID E·Filed 2017·Granted Mar 20, 2018·6 cites·17 claims
- 1687US9732871B2Aspirated relief valve for a turbocharging systemFLETCHER DAVID E·Filed 2015·Granted Aug 15, 2017·4 cites·17 claims
- 1786US10724550B2Venturi devices with dual Venturi flow pathsDAYCO IP HOLDINGS LLC·Filed 2018·Granted Jul 28, 2020·3 cites·14 claims
- 1886US10239187B2Methods for post-mold processing a Venturi device or check valveFLETCHER DAVID E·Filed 2016·Granted Mar 26, 2019·3 cites·18 claims
- 1985US10422351B2Devices 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
- 2085US9291094B2Variable flow valve having metered flow orificeGRAICHEN BRIAN M·Filed 2014·Granted Mar 22, 2016·5 cites·4 claims
- 2184US9841110B2Sprung gate valves movable by a solenoid actuatorFLETCHER DAVID E·Filed 2014·Granted Dec 12, 2017·6 cites·15 claims
- 2282US10513954B2Restrictors using the Venturi effectFLETCHER DAVID E·Filed 2016·Granted Dec 24, 2019·2 cites·22 claims
- 2382US10316864B2Devices for producing vacuum using the venturi effectFLETCHER DAVID E·Filed 2016·Granted Jun 11, 2019·3 cites·20 claims
- 2482USD821302SVenturi deviceFLETCHER DAVID E·Filed 2015·Granted Jun 26, 2018·14 cites·1 claims
- 2582US9581060B2Evacuator system for supplying high suction vacuum or high suction flow rateFLETCHER DAVID·Filed 2014·Granted Feb 28, 2017·4 cites·23 claims
- 2681US10221867B2Flow control for aspirators producing vacuum using the venturi effectHAMPTON KEITH·Filed 2014·Granted Mar 5, 2019·5 cites·11 claims
- 2780US9581258B2Check valve with improved sealing memberFLETCHER DAVID·Filed 2015·Granted Feb 28, 2017·3 cites·20 claims
- 2879US10167971B2Aspirated relief valve for a turbocharging systemFLETCHER DAVID E·Filed 2017·Granted Jan 1, 2019·2 cites·12 claims
- 2979US9879699B2Venturi devices with dual Venturi flow pathsFLETCHER DAVID E·Filed 2015·Granted Jan 30, 2018·2 cites·9 claims
- 3077US10107240B2Check valves and Venturi devices having the sameFLETCHER DAVID E·Filed 2016·Granted Oct 23, 2018·1 cites·22 claims
- 3176US10626888B2Dual Venturi deviceFLETCHER DAVID E·Filed 2015·Granted Apr 21, 2020·2 cites·23 claims
- 3276US10519984B2Noise attenuation in a Venturi device and/or check valvesFLETCHER DAVID E·Filed 2015·Granted Dec 31, 2019·2 cites·12 claims
- 3373US11668423B2Quick connector with a replaceable restriction orificeDAYCO IP HOLDINGS LLC·Filed 2022·Granted Jun 6, 2023·0 cites·13 claims
- 3473US9447697B2Wastegate valve and turbocharger having sameMARKYVECH CRAIG·Filed 2013·Granted Sep 20, 2016·4 cites·18 claims
- 3572US9822785B2Turbocharger compressor recirculation systemFLETCHER DAVID·Filed 2014·Granted Nov 21, 2017·3 cites·20 claims
- 3671USD780296SActuated valveFLETCHER DAVID E·Filed 2015·Granted Feb 28, 2017·8 cites·1 claims
- 3766US10525952B2Aspirators for producing vacuum using the venturi effectDAYCO IP HOLDINGS LLC·Filed 2019·Granted Jan 7, 2020·0 cites·23 claims
- 3865US11067177B2Sprung gate valves movable by an actuatorDAYCO IP HOLDINGS LLC·Filed 2019·Granted Jul 20, 2021·0 cites·16 claims
- 3965USD840922SVenturi deviceDAYCO IP HOLDINGS LLC·Filed 2018·Granted Feb 19, 2019·5 cites·1 claims
- 4065US10190549B2Check valves and venturi devices having the sameDAYCO IP HOLDINGS LLC·Filed 2018·Granted Jan 29, 2019·0 cites·20 claims
- 4165US9617958B2Noise attenuation unit for engine systemsHAMPTON KEITH·Filed 2014·Granted Apr 11, 2017·1 cites·20 claims
- 4263US9828953B2Evacuator system having multi-port evacuatorFLETCHER DAVID·Filed 2014·Granted Nov 28, 2017·1 cites·21 claims
- 4363USD802095SActuated valveFLETCHER DAVID E·Filed 2017·Granted Nov 7, 2017·5 cites·1 claims
- 4462US10480537B2Low-cost evacuator for an engine having tuned Venturi gapsDAYCO IP HOLDINGS LLC·Filed 2019·Granted Nov 19, 2019·0 cites·16 claims
- 4562US10077746B2Noise attenuation unit for engine systemsHAMPTON KEITH·Filed 2017·Granted Sep 18, 2018·0 cites·13 claims
- 4661US11492936B2Crankcase ventilation system with constant restriction in the flow direction and free flow in an opposite directionDAYCO IP HOLDINGS LLC·Filed 2020·Granted Nov 8, 2022·0 cites·17 claims
- 4761USD843315SVenturi deviceDAYCO IP HOLDINGS LLC·Filed 2018·Granted Mar 19, 2019·4 cites·1 claims
- 4861USD840920SVenturi deviceDAYCO IP HOLDINGS LLC·Filed 2018·Granted Feb 19, 2019·4 cites·1 claims
- 4960US10323767B2Sprung gate valves movable by an actuatorDAYCO IP HOLDINGS LLC·Filed 2017·Granted Jun 18, 2019·0 cites·12 claims
- 5056US10830197B2Two-position gate and sprung gate valves having a full-flow open position and a restricted-flow open positionDAYCO IP HOLDINGS LLC·Filed 2019·Granted Nov 10, 2020·0 cites·17 claims
Showing the top 50 of 74 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →