ClassID:

143645

F04C23/006 - CPC Classification

Classification description:

Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle having complementary function

Recent Application in this class:
#1
20230033429
2023-02-02

Vacuum pump system and method for operating a vacuum pump system

#2
20230003208
2023-01-05

Redundant pumping system and pumping method by means of this pumping system

#3
20210388834
2021-12-16

Screw expander with variable volume controlled by the pressure ratio, and plant for recovering electrical energy from heat with a screw expander

#4
20210108629
2021-04-15

Dual motor compressor

#5
20210017991
2021-01-21

CARTRIDGE STYLE FRONT COVER AND COUPLING CAVITY SLEEVE FOR AUTOMOTIVE SUPERCHARGER

#6
20190360533
2019-11-28

Elastomer series coupling damper for supercharger

#7
20190345938
2019-11-14

Vacuum pump system and method for operating a vacuum pump system

#8
20180207581
2018-07-26

Apparatus for evacuating a corrosive effluent gas stream from a processing chamber

#9
20180112588
2018-04-26

Method of supercharging an internal combustion engine

#10
20180106184
2018-04-19

Screw air compressor with bypass

#11
20180023572
2018-01-25

Device for conditioning flow of working fluids

#12
20170227010
2017-08-10

Cartridge style front cover and coupling cavity sleeve for automotive supercharger

#13
20160369783
2016-12-22

KINETIC ENERGY RECOVERY SYSTEM

#14
20160356318
2016-12-08

Elastomer series coupling damper for supercharger

#15
20160348679
2016-12-01

Vacuum pump system including scroll pump and secondary pumping mechanism

#16
20160069600
2016-03-10

Compressing device

#17
20150361871
2015-12-17

System, apparatus and methods for diverting airflow to a pressure source

#18
20150170938
2015-06-18

Method and device for pumping of a process chamber

#19
20150139817
2015-05-21

RAMP-UP OPTIMIZING VACUUM SYSTEM

#20
20150121877
2015-05-07

Compressor

#21
20140294605
2014-10-02

Methods and systems for maintaining a high vacuum in a vacuum enclosure

#22
20130340726
2013-12-26

Engine balancing supercharger

#23
20120148421
2012-06-14

Ejector pump

#24
20120041664
2012-02-16

Method for powering an apparatus

#25
20120006305
2012-01-12

Supercharging device for compressing charge air for an internal combustion engine

#26
20110204654
2011-08-25

Engine and supercharger

#27
20110167822
2011-07-14

Fluid Machine

#28
20110103988
2011-05-05

Compressor having capacity modulation system

#29
20110073081
2011-03-31

Supercharger cooling

#30
20110070115
2011-03-24

Two-stage rotary expander, expander-integrated compressor, and refrigeration cycle apparatus

#31
20110000227
2011-01-06

Compressor

#32
20100287926
2010-11-18

Hydraulic pump/motor and fan driving device

#33
20100275638
2010-11-04

FLUID MACHINE

#34
20100254844
2010-10-07

Expander-compressor unit

#35
20100251990
2010-10-07

Engine

#36
20100186439
2010-07-29

Fluid machine and refrigeration cycle apparatus

#37
20100183467
2010-07-22

Portable, rotary vane vacuum pump with automatic vacuum breaking arrangement

#38
20100175946
2010-07-15

Supercharger-equipped internal combustion engine for saddle-ride type vehicle

#39
20100089092
2010-04-15

Refrigeration cycle apparatus and fluid machine used therefor

#40
20100086402
2010-04-08

High efficiency supercharger outlet

#41
20090282845
2009-11-19

EXPANDER AND HEAT PUMP USING THE EXPANDER

#42
20090229582
2009-09-17

Vehicle having internal combustion engine with supercharger

#43
20090165441
2009-07-02

Combustion engine with feedback gear/rotary pump input

#44
20090110583
2009-04-30

Rotary blower with super-charged injection cooling

#45
20080226481
2008-09-18

Screw pump and pumping arrangement

#46
20070172374
2007-07-26

Expander

#47
20070033966
2007-02-15

Vehicle air conditioning system

#48
20060228244
2006-10-12

Scroll compressor with multiple isolated inlet ports

#49
20050063855
2005-03-24

Rotary fluid machinery

#50
16601174
2020-04-28

Dual motor compressor