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Inventor profile of:

David E. Fletcher

City:

Flint, Michigan

Country:

United States

Published Applications:

42

Last publication date:

2019-11-07

Top Assignees for applications by David E. Fletcher

The entities that hold a legal rights for patent applications filed by inventor Fletcher David E.:

Recent patent applications by Fletcher David E.

David E. Fletcher from Flint, US has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2019-11-07
US20190338741A1
Mechanical engineering

Two-position gate and sprung gate valves having a full-flow open position and a restricted-flow open position

 #2 | 2019-10-24
US20190323618A1
Mechanical engineering

Check valve insert defining an open position and check valves having same

 #3 | 2019-08-22
US20190257441A1
Mechanical engineering

Sprung gate valves movable by an actuator

 #4 | 2019-08-22
US20190256070A1
Performing operations; transporting

Aspirators for producing vacuum using the venturi effect

 #5 | 2019-08-01
US20190234430A1
Mechanical engineering

Low-cost evacuator for an engine having tuned Venturi gaps

 #6 | 2019-03-21
US20190085835A1
Mechanical engineering

Solenoid activated vacuum pump for an engine system and system having same

 #7 | 2018-06-07
US20180156171A1
Mechanical engineering

Check valves and venturi devices having the same

 #8 | 2018-05-10
US20180128287A1
Mechanical engineering

Venturi devices with dual Venturi flow paths

 #9 | 2018-04-05
US20180094744A1
Mechanical engineering

Sprung gate valves movable by an actuator

 #10 | 2018-03-22
US20180080567A1
Mechanical engineering

Valve gate within a Venturi gap of a Venturi device for producing vacuum

 #11 | 2017-12-14
US20170356404A1
Mechanical engineering

Bypass valve in an apparatus for producing vacuum

 #12 | 2017-10-26
US20170307098A1
Mechanical engineering

Aspirated relief valve for a turbocharging system

 #13 | 2017-09-07
US20170254426A1
Mechanical engineering

Fluidic diode check valve

 #14 | 2017-05-18
US20170138502A1
Mechanical engineering

Magnetically actuated shut-off valve

 #15 | 2017-05-04
US20170122153A1
Mechanical engineering

Venturi devices resistant to ice formation for producing vacuum from crankcase gases

 #16 | 2017-03-21
US14960481
Mechanical engineering

Sprung gate valve

 #17 | 2017-03-02
US20170058731A1
Mechanical engineering

Restrictors using the Venturi effect

 #18 | 2017-02-09
US20170037983A1
Mechanical engineering

Magnetically actuated shut-off valve

 #19 | 2017-01-19
US20170016414A1
Mechanical engineering

Devices for producing vacuum using the venturi effect having a plurality of subpassageways and motive exits in the motive section

 #20 | 2016-12-29
US20160375548A1
Performing operations; transporting

Methods for post-mold processing a Venturi device or check valve

 #21 | 2016-12-08
US20160356250A1
Mechanical engineering

Check valves and Venturi devices having the same

 #22 | 2016-10-13
US20160298656A1
Mechanical engineering

Devices for producing vacuum using the venturi effect

 #23 | 2016-09-15
US20160265557A1
Mechanical engineering

Vacuum producing device having a suction passageway and a discharge passageway entering through the same wall

 #24 | 2016-07-14
US20160201552A1
Mechanical engineering

Crankcase ventilating evacuator

 #25 | 2016-07-14
US20160201531A1
Mechanical engineering

Noise attenuating member for noise attenuating units in engines

 #26 | 2016-07-07
US20160195189A1
Mechanical engineering

Check valve with improved sealing member

 #27 | 2016-05-26
US20160146374A1
Mechanical engineering

Variable flow valve having metered flow orifice

 #28 | 2016-03-03
US20160061164A1
Mechanical engineering

VACUUM PRODUCER INCLUDING AN ASPIRATOR AND AN EJECTOR

 #29 | 2016-03-03
US20160061160A1
Mechanical engineering

Low-cost evacuator for an engine having tuned Venturi gaps

 #30 | 2016-02-25
US20160053727A1
Mechanical engineering

Dual aspirator system with aspirator shut-off valve

 #31 | 2016-02-11
US20160040688A1
Mechanical engineering

Pneumatically actuated vacuum pump having multiple venturi gaps and check valves

 #32 | 2016-01-21
US20160017792A1
Mechanical engineering

Aspirated relief valve for a turbocharging system

 #33 | 2016-01-14
US20160010661A1
Mechanical engineering

Dual Venturi device

 #34 | 2015-12-10
US20150354726A1
Mechanical engineering

Noise attenuation in a Venturi device and/or check valves

 #35 | 2015-12-10
US20150354600A1
Mechanical engineering

Venturi devices with dual Venturi flow paths

 #36 | 2015-12-03
US20150345517A1
Mechanical engineering

Vacuum creation system having an ejector, pneumatic control valve and optionally an aspirator

 #37 | 2015-11-05
US20150315963A1
Mechanical engineering

Variable flow valve having metered flow orifice

 #38 | 2015-04-09
US20150096637A1
Mechanical engineering

Noise attenuation in a check valve unit or apparatus for producing vacuum

 #39 | 2015-04-02
US20150090355A1
Mechanical engineering

Solenoid-powered gate valve

 #40 | 2015-03-05
US20150060709A1
Mechanical engineering

Sprung gate valves movable by a solenoid actuator

 #41 | 2015-01-22
US20150020524A1
Mechanical engineering

Aspirator and ejector system

 #42 | 2014-12-04
US20140353534A1
Mechanical engineering

Sprung gate valves movable by an actuator
InventorID:

988219 ⎘