ClassID:

144442

F04F5/52 - CPC Classification

Classification description:

Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow; Component parts, details, or accessories not provided for in, or of interest apart from, groups  - ; Control of evacuating pumps

Recent Application in this class:
#1
20240410398
2024-12-12

METHODS AND APPARATUS TO REMOVE LIQUID FROM A HOUSING

#2
20240208080
2024-06-27

Auto-Release Vacuum Device

#3
20230347478
2023-11-02

VACUUM UNIT

#4
20230141787
2023-05-11

Auto-release vacuum device

#5
20230120094
2023-04-20

TAIL GAS EXHAUSTING PRESSURE STABILIZATION CONTROL SYSTEM

#6
20220403856
2022-12-22

EJECTOR AND VACUUM GENERATING DEVICE INCLUDING THE SAME

#7
20220325725
2022-10-13

Dual direction vacuum apparatus having a vacuum mode and purge mode

#8
20220145908
2022-05-12

Tail gas exhausting pressure stabilization control system

#9
20220089382
2022-03-24

Vacuum ejector and seal valve unit

#10
20220082114
2022-03-17

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

#11
20220048205
2022-02-17

Auto-release vacuum device

#12
20210404485
2021-12-30

TAIL GAS EXHAUSTING PRESSURE STABILIZATION CONTROL SYSTEM

#13
20210185867
2021-06-17

Air control device for mounter

#14
20200277971
2020-09-03

Vacuum breaking device for vacuum generator

#15
20200230825
2020-07-23

Auto-release vacuum device

#16
20200088213
2020-03-19

Pressure-controlling device, and pressure-using apparatus

#17
20200072248
2020-03-05

Multifunctional air extraction boosting pump

#18
20190382215
2019-12-19

Vacuum ejector and seal valve unit

#19
20190143536
2019-05-16

Vacuum ejector device

#20
20180147732
2018-05-31

Auto-release vacuum device

#21
20180073523
2018-03-15

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

#22
20180066766
2018-03-08

Fluid transfer device based on pneumatic sucking and expelling

#23
20170355083
2017-12-14

Controlling a vacuum system comprising a vacuum generator

#24
20170350784
2017-12-07

Controlling a vacuum system comprising a vacuum generator arrangement

#25
20170298961
2017-10-19

Ejector for a refrigerating machine

#26
20170203444
2017-07-20

Vacuum generator device

#27
20170152868
2017-06-01

Multi-stage vacuum ejector

#28
20170097018
2017-04-06

Pumping device for sucking or draining fluid

#29
20170089339
2017-03-30

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

#30
20160298656
2016-10-13

Devices for producing vacuum using the venturi effect

#31
20160271805
2016-09-22

Vacuum generating apparatus and vacuum tube lifter having a vacuum generating apparatus

#32
20160258472
2016-09-08

Override for an automatic release vacuum device

#33
20150375401
2015-12-31

System for handling workpieces and method for operating such a system

#34
20150354726
2015-12-10

Noise attenuation in a Venturi device and/or check valves

#35
20150336278
2015-11-26

Auto-release vacuum device

#36
20150159677
2015-06-11

Flow control for aspirators producing vacuum using the venturi effect

#37
20150118071
2015-04-30

VACUUM GENERATOR

#38
20150114348
2015-04-30

Multiple tap aspirator

#39
20150098842
2015-04-09

Impulse Plus Propulsion System

#40
20150052990
2015-02-26

Method for operating a vacuum generator and a vacuum generator for carrying out said method

#41
20150033791
2015-02-05

Ejector

#42
20150017025
2015-01-15

Method for operating a vacuum generator and a vacuum generator

#43
20140363312
2014-12-11

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

#44
20140134007
2014-05-15

Device for pressure-dependent opening of a suction intake

#45
20140080016
2014-03-20

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

#46
20130333665
2013-12-19

Approach for supplying vacuum via a supercharger

#47
20130315761
2013-11-28

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

#48
20130200639
2013-08-08

Auto-release vacuum device

#49
20120248803
2012-10-04

Auto-release vacuum device

#50
20120134852
2012-05-31

Venturi tube assembly and manual/pneumatic pump including the venturi tube assembly

#51
20110220241
2011-09-15

Auto-release vacuum device

#52
20110052421
2011-03-03

METHOD AND DEVICE FOR CONTROLLING THE CONDENSER COOLING WATER OF A STEAM-JET VACUUM PUMP

#53
20100303641
2010-12-02

Vacuum generating device and method for the operation thereof

#54
20100303557
2010-12-02

Method and apparatus for conveying material and ejector apparatus

#55
20100301140
2010-12-02

Method and apparatus for conveying material and ejector apparatus

#56
20100277331
2010-11-04

Method and device for monitoring negative pressure loss in a negative pressure generating device

#57
20100207409
2010-08-19

Auto-release vacuum device

#58
20100175764
2010-07-15

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

#59
20100045057
2010-02-25

Ejector device with ventilation action

#60
20090295170
2009-12-03

Ejector device

#61
20090220310
2009-09-03

Method and apparatus for conveying material and ejector apparatus

#62
20090217998
2009-09-03

Auto-release vacuum device

#63
20080292476
2008-11-27

Vacuum ejector pumps

#64
20080291235
2008-11-27

Device for Generating an Underpressure

#65
20080267789
2008-10-30

Control apparatus and control method for negative pressure generating apparatus

#66
20070148009
2007-06-28

Vacuum ejector pumps

#67
20070006940
2007-01-11

Auto-release vacuum device

#68
20060269422
2006-11-30

Vacuum generator for vacuum-decay leak testing the evaporative emissions system of a motor vehicle

#69
20060153694
2006-07-13

Pneumatic suction device

#70
20060027235
2006-02-09

Compensating venturi vacuum system

#71
20050118032
2005-06-02

Vaccum-generating unit

#72
20050002797
2005-01-06

Structure of ejector pump