ClassID:

144417

F04F5/20 - CPC Classification

Classification description:

Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating

Sub-classes:
Recent Application in this class:
#1
20260063149
2026-03-05

Venturi Powder Pump and Coating Installation Comprising Such a Powder Pump

#2
20250354568
2025-11-20

COMPRESSED-AIR-DRIVEN VACUUM GENERATION DEVICE AND AREA SUCTION GRIPPER

#3
20250271004
2025-08-28

JET PUMP SYSTEM

#4
20250188894
2025-06-12

METHOD AND SYSTEM FOR ADJUSTING PRESSURE IN A FUEL TANK

#5
20240229821
2024-07-11

AIR AMPLIFIER

#6
20240229820
2024-07-11

AIR AMPLIFIER

#7
20240208080
2024-06-27

Auto-Release Vacuum Device

#8
20240159251
2024-05-16

FUEL CELL EJECTOR

#9
20240159250
2024-05-16

Pressure difference generating apparatus

#10
20240133397
2024-04-25

Air amplifier

#11
20240133396
2024-04-25

Air amplifier

#12
20240068489
2024-02-29

Vacuum ejector pump with multiple nozzles

#13
20230375008
2023-11-23

BLADELESS FAN FOR COMMERCIAL APPLICATIONS

#14
20230374956
2023-11-23

Vehicle drive comprising vacuum system and ejector

#15
20230349480
2023-11-02

VACUUM UNIT

#16
20230347478
2023-11-02

VACUUM UNIT

#17
20230216435
2023-07-06

PIEZOELECTRIC AIRFLOW POWER GENERATOR

#18
20230141787
2023-05-11

Auto-release vacuum device

#19
20230120094
2023-04-20

TAIL GAS EXHAUSTING PRESSURE STABILIZATION CONTROL SYSTEM

#20
20220403856
2022-12-22

EJECTOR AND VACUUM GENERATING DEVICE INCLUDING THE SAME

#21
20220364577
2022-11-17

Ejector device

#22
20220325725
2022-10-13

Dual direction vacuum apparatus having a vacuum mode and purge mode

#23
20220205460
2022-06-30

Devices for producing vacuum using the Venturi effect having a solid fletch

#24
20220205416
2022-06-30

Devices for producing vacuum using the Venturi effect having a hollow fletch

#25
20220145908
2022-05-12

Tail gas exhausting pressure stabilization control system

#26
20220145907
2022-05-12

DEVICE FOR GENERATING NEGATIVE PRESSURE

#27
20220089382
2022-03-24

Vacuum ejector and seal valve unit

#28
20220082114
2022-03-17

Jet pump unit having an axis of a nozzle and an axis of a mixing tube offset by an angle

#29
20220048205
2022-02-17

Auto-release vacuum device

#30
20220025908
2022-01-27

Ejector and fuel cell system including the same

#31
20210404485
2021-12-30

TAIL GAS EXHAUSTING PRESSURE STABILIZATION CONTROL SYSTEM

#32
20210215031
2021-07-15

Boosting production from low pressure or dead wells

#33
20210180616
2021-06-17

Multistage aspirator for inflatable assemblies

#34
20210115774
2021-04-22

Boosting production from low pressure or dead wells

#35
20210040961
2021-02-11

Oxyhydrogen pulse and rotary detonation combustion pump

#36
20200412205
2020-12-31

Motor cooling systems

#37
20200398287
2020-12-24

Jet pump diffuser for a separator

#38
20200370569
2020-11-26

Supersonic ejector with annular chamber

#39
20200347777
2020-11-05

Compressor arrangement for an internal combustion engine and method for operating a compressor arrangement

#40
20200340627
2020-10-29

COMBUSTIBLE GAS PURGE SYSTEM

#41
20200340495
2020-10-29

System for the circulation of gas in airs gaps of rotating machines

#42
20200277971
2020-09-03

Vacuum breaking device for vacuum generator

#43
20200263707
2020-08-20

Jet pump comprising an internal nozzle

#44
20200230825
2020-07-23

Auto-release vacuum device

#45
20200080572
2020-03-12

Industrial ejector having improved suction performance

#46
20200072248
2020-03-05

Multifunctional air extraction boosting pump

#47
20200067112
2020-02-27

Ejector for a fuel cell system and fuel cell system

#48
20190383308
2019-12-19

Ejector module

#49
20190382215
2019-12-19

Vacuum ejector and seal valve unit

#50
20190275567
2019-09-12

Air intake and blowout tool

#51
20190234430
2019-08-01

Low-cost evacuator for an engine having tuned Venturi gaps

#52
20190203738
2019-07-04

Vacuum pump using profile

#53
20190192884
2019-06-27

Aspirator for air flow amplification

#54
20190168153
2019-06-06

Vacuum pump and array thereof

#55
20190143536
2019-05-16

Vacuum ejector device

#56
20190128289
2019-05-02

Ejector and a turbo-machine having an ejector

#57
20190128218
2019-05-02

Evaporative fuel processing device and fluid processing device

#58
20190107124
2019-04-11

Ejector

#59
20190091704
2019-03-28

Telescoping aspirator system

#60
20190048768
2019-02-14

Ejector device and combination of a cylinder head cover and an ejector device

#61
20190032678
2019-01-31

Ejector, ejector production method, and method for setting diffuser outlet flow path

#62
20190032677
2019-01-31

Ejector

#63
20180355773
2018-12-13

Silencer and ejector in which silencer is used

#64
20180265205
2018-09-20

Evacuation assembly aspirator

#65
20180237203
2018-08-23

Device for accommodating an adhesive application unit and method

#66
20180202316
2018-07-19

BORESCOPE VACUUM RETRIEVAL SYSTEM

#67
20180171841
2018-06-21

Cylinder head cover and method for producing a cylinder head cover

#68
20180155039
2018-06-07

Collapsible aspirator barrel

#69
20180147732
2018-05-31

Auto-release vacuum device

#70
20180135657
2018-05-17

OIL DIFFUSION PUMP AND OIL VAPOR GENERATOR USED THEREFOR

#71
20180128287
2018-05-10

Venturi devices with dual Venturi flow paths

#72
20180127103
2018-05-10

Fully integrated hybrid electric jet engine

#73
20180087537
2018-03-29

Collapsible/ extendable aspirator system

#74
20180079511
2018-03-22

Turbofan engine fluid ice protection delivery system

#75
20180073523
2018-03-15

Devices, systems, and methods for variable flow rate fuel ejection

#76
20180066766
2018-03-08

Fluid transfer device based on pneumatic sucking and expelling

#77
20180016017
2018-01-18

Bleed air heat ejectors

#78
20170353095
2017-12-07

Driving Device And Bladeless Fan Utilizing the Same

#79
20170350784
2017-12-07

Controlling a vacuum system comprising a vacuum generator arrangement

#80
20170298961
2017-10-19

Ejector for a refrigerating machine

#81
20170284394
2017-10-05

Pumping system for generating a vacuum and method for pumping by means of this pumping system

#82
20170227129
2017-08-10

INSTALLATION FOR PRODUCING NITRIC ACID WITH A SEALING DEVICE FOR SEALING A ROTATABLE SHAFT OF A NO COMPRESSOR AND/OR OF A RESIDUAL GAS EXPANDER

#83
20170203444
2017-07-20

Vacuum generator device

#84
20170151454
2017-06-01

Evacuation device

#85
20170122342
2017-05-04

High Vacuum Ejector

#86
20170102010
2017-04-13

Ejector using swirl flow

#87
20170097018
2017-04-06

Pumping device for sucking or draining fluid

#88
20170089339
2017-03-30

Pumping method in a system of vacuum pumps and system of vacuum pumps

#89
20170045051
2017-02-16

PUMPING METHOD IN A SYSTEM FOR PUMPING AND SYSTEM OF VACUUM PUMPS

#90
20170037874
2017-02-09

Ejector assembly and vacuum pump

#91
20170022983
2017-01-26

Air operated pump

#92
20170016459
2017-01-19

Collapsible/extendable aspirator system

#93
20170016414
2017-01-19

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

#94
20160377038
2016-12-29

Ejector and arrangement for use in a motor vehicle having a turbocharger

#95
20160369820
2016-12-22

Dry roughing vacuum pump

#96
20160348948
2016-12-01

Ejector

#97
20160298656
2016-10-13

Devices for producing vacuum using the venturi effect

#98
20160265557
2016-09-15

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

#99
20160258472
2016-09-08

Override for an automatic release vacuum device

#100
20160245236
2016-08-25

Evacuator with motive fin

#101
20160237017
2016-08-18

Vacuum distillation method for easily polymerizable compound and method for producing acrylic acid

#102
20160230779
2016-08-11

Cartridge for a Pneumatic Circuit and Suction Gripper Device Comprising such a Cartridge

#103
20160186783
2016-06-30

Ejector

#104
20160153472
2016-06-02

Evacuator system having multi-port evacuator

#105
20160138615
2016-05-19

Aspirator pump with dual high pressure streams

#106
20160138472
2016-05-19

Ventilation of a turbomachine nacelle

#107
20160116195
2016-04-28

Ejector

#108
20160102682
2016-04-14

Aspirator and method of fabricating

#109
20160061160
2016-03-03

Low-cost evacuator for an engine having tuned Venturi gaps

#110
20160040688
2016-02-11

Pneumatically actuated vacuum pump having multiple venturi gaps and check valves

#111
20160037587
2016-02-04

Oil diffusion pump and vacuum film formation device

#112
20160010661
2016-01-14

Dual Venturi device

#113
20150354726
2015-12-10

Noise attenuation in a Venturi device and/or check valves

#114
20150354601
2015-12-10

Vacuum ejector nozzle with elliptical diverging section

#115
20150354600
2015-12-10

Venturi devices with dual Venturi flow paths

#116
20150345840
2015-12-03

Ejector

#117
20150345517
2015-12-03

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

#118
20150336278
2015-11-26

Auto-release vacuum device

#119
20150176606
2015-06-25

Ejector

#120
20150170938
2015-06-18

Method and device for pumping of a process chamber

#121
20150159677
2015-06-11

Flow control for aspirators producing vacuum using the venturi effect

#122
20150093262
2015-04-02

Inline vacuum pump

#123
20150033791
2015-02-05

Ejector

#124
20150023809
2015-01-22

Ejector

#125
20150017025
2015-01-15

Method for operating a vacuum generator and a vacuum generator

#126
20140363339
2014-12-11

Steam sterilizer

#127
20140363312
2014-12-11

Fluid pumping system and a fluid turbine system including the fluid pumping system

#128
20140130775
2014-05-15

Method and system for providing vacuum

#129
20140102543
2014-04-17

Venturi ejector for a chemical dispenser

#130
20140050595
2014-02-20

Quick-release vacuum pump

#131
20130333665
2013-12-19

Approach for supplying vacuum via a supercharger

#132
20130315761
2013-11-28

Assembly of venturi-effect vacuum generator modules, and module for said assembly

#133
20130232723
2013-09-12

Pneumatic vacuum cleaner

#134
20130200639
2013-08-08

Auto-release vacuum device

#135
20130115111
2013-05-09

Device and method for generating vacuum for vacuum cementing systems

#136
20130108482
2013-05-02

Method and system for attenuating transmission of high amplitude oscillations by a vacuum system

#137
20130108475
2013-05-02

Actuator-Driven Pinch Pump

#138
20130068317
2013-03-21

Fire hose adapter and method of use

#139
20120261011
2012-10-18

ENERGY REDUCTION MODULE USING A DEPRESSURIZING VACUUM APPARATUS FOR VACUUM PUMP

#140
20120248803
2012-10-04

Auto-release vacuum device

#141
20120237367
2012-09-20

Method and system for providing vacuum

#142
20120237365
2012-09-20

Method and system for operating an ejector

#143
20120219443
2012-08-30

Vacuum pumping system having an ejector and check valve

#144
20120148421
2012-06-14

Ejector pump

#145
20120057993
2012-03-08

Jet pump having scroll shaped flow path

#146
20110236227
2011-09-29

Ejector

#147
20110229346
2011-09-22

Vacuum ejector and vacuum apparatus having the same

#148
20110220241
2011-09-15

Auto-release vacuum device

#149
20110052424
2011-03-03

Jet pump assembly having increased entrainment flow

#150
20100310326
2010-12-09

METHOD AND APPARATUS IN A VACUUM CONVEYING SYSTEM OF MATERIAL

#151
20100209819
2010-08-19

Ejector and fuel cell system using the same

#152
20100209818
2010-08-19

Ejector and fuel cell system using the same

#153
20100207409
2010-08-19

Auto-release vacuum device

#154
20100175764
2010-07-15

Device for Controlling a Circuit that Consumes Compressed Gas, and a Vacuum Generator Making Use Thereof

#155
20100040482
2010-02-18

Ejectors with separably secured nozzles, adjustable size nozzles, or adjustable size mixing tubes

#156
20090311110
2009-12-17

Driving agent vacuum pump

#157
20090217998
2009-09-03

Auto-release vacuum device

#158
20080075613
2008-03-27

Motivating fluid vacuum pump

#159
20080023142
2008-01-31

Pneumatic Etching Device

#160
20070183855
2007-08-09

Method and apparatus for conveying material

#161
20070182031
2007-08-09

Method and apparatus for conveying material

#162
20070048149
2007-03-01

Oil suction pump

#163
20070025862
2007-02-01

Compressible gas ejector with unexpanded motive gas-load gas interface

#164
20070006940
2007-01-11

Auto-release vacuum device

#165
20060278282
2006-12-14

Vacuum unit and method for producing a filter for a vacuum unit

#166
20060182638
2006-08-17

Vacuum device and vacuum pump

#167
20060153694
2006-07-13

Pneumatic suction device

#168
20060082027
2006-04-20

In-line vacuum device for pulling a vacuum

#169
20060027608
2006-02-09

Liquid pumping device

#170
20050095142
2005-05-05

Negative pressure supply apparatus

#171
20050077373
2005-04-14

Ejector for use with pneumatic booster

#172
15165114
2017-09-26

Mist blower with Venturi housing