Patents-Review.com
ClassID:

143575 ⎘

F04C18/086 - CPC Classification

Classification description:

Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing; Details specially related to intermeshing engagement type pumps Carter

Recent Application in this class:
#1
20240301879
2024-09-12

Element, device and method for compression of a gas to be compressed having a low temperature

 #2
20220226853
2022-07-21

A DEVICE FOR PAINTING A COMPRESSOR OR VACUUM PUMP HOUSING AND METHOD APPLIED

 #3
20220186728
2022-06-16

Electric pump

 #4
20210340979
2021-11-04

Roots pump having a seal member with first and second projections

 #5
20210148364
2021-05-20

Pump end plate manufacturing method and pump

 #6
20210088044
2021-03-25

Driving structure of three-axis multi-stage roots pump

 #7
20200114478
2020-04-16

Repair of cast iron bore inner diameter surfaces

 #8
20200080547
2020-03-12

Scroll compressor

 #9
20190376516
2019-12-12

Offset stator bores for pump sealing

 #10
20190368354
2019-12-05

MULTI-STAGE VACUUM BOOSTER PUMP COUPLING

 #11
20190136859
2019-05-09

SIMPLIFIED ROOTS-TYPE BLOWER

 #12
20180298904
2018-10-18

Compressor element for a screw compressor and screw compressor in which such a compressor element is applied

 #13
20180230999
2018-08-16

Volumetric lobe compressor for equipment collecting waste material

 #14
20180112664
2018-04-26

Screw compressor, compressor element and gearbox applied thereby

 #15
20170204858
2017-07-20

VACUUM PUMP

 #16
20160369804
2016-12-22

Suction/compression assembly for a waste material aspiration system

 #17
20160369800
2016-12-22

Suction/compression assembly for a waste material intake equipment or system

 #18
20160053761
2016-02-25

Screw pump

 #19
20150152871
2015-06-04

Method and pump arrangement for evacuating a chamber

 #20
20140227122
2014-08-14

Claw pump with relief space

 #21
20140205483
2014-07-24

Roots pump connection channels separating adjacent pump stages

 #22
20130064694
2013-03-14

Compressor flange for screw-type compressor

 #23
20120183418
2012-07-19

Screw compressor having reverse rotation protection

 #24
20120171069
2012-07-05

Screw compressor with a shunt pulsation trap

 #25
20120148435
2012-06-14

Screw compressor

 #26
20120134867
2012-05-31

Positive-displacement dry pump

 #27
20120124996
2012-05-24

Dual-inlet supercharger for EGR flow control

 #28
20120014825
2012-01-19

Roots fluid machine with reduced gas leakage

 #29
20120009079
2012-01-12

Single screw compressor

 #30
20110300014
2011-12-08

Rotary lobe blower (pump) or vacuum pump with a shunt pulsation trap

 #31
20110256008
2011-10-20

Screw compressor having lubricating oil system

 #32
20110150683
2011-06-23

Rotary compressor

 #33
20110131980
2011-06-09

Dual-inlet supercharger for EGR flow control

 #34
20100269797
2010-10-28

Tuning device with combined backflow function

 #35
20100232999
2010-09-16

Seal

 #36
20100135839
2010-06-03

SCREW COMPRESSOR WITH INTEGRAL BEARING COVER AND DISCHARGE PLENUM DIVIDER

 #37
20100135837
2010-06-03

Pump Casing

 #38
20100116254
2010-05-13

Roots type gear compressor with helical lobes having communication with discharge port

 #39
20100104464
2010-04-29

Roots pumps

 #40
20100047104
2010-02-25

Fluid machine with divided housing

 #41
20100008811
2010-01-14

Screw compressor having rotor casing with removable discharge opening neighborhood portion

 #42
20090191083
2009-07-30

Rotary blower with isothermal air jacket

 #43
20090185932
2009-07-23

Scroll compressor build assembly

 #44
20090185930
2009-07-23

Scroll compressor with housing shell location

 #45
20080295534
2008-12-04

Cooling systems

 #46
20080292452
2008-11-27

Housing for a supercharger assembly

 #47
20080206086
2008-08-28

Slide valve

 #48
20080181803
2008-07-31

Reflux gas compressor

 #49
20080175739
2008-07-24

SUPERCHARGER WITH HEAT INSULATED GEAR CASE

 #50
20080131303
2008-06-05

Compressor terminal plate

 #51
20080060622
2008-03-13

Supercharger with housing internal noise attenuation

 #52
20080044275
2008-02-21

PUMP

 #53
20080025858
2008-01-31

Composite dry vacuum pump having roots and screw rotor

 #54
20070258841
2007-11-08

Gas compressor having a pair of housing heads

 #55
20060216186
2006-09-28

Seal assemblies

 #56
20060127235
2006-06-15

Compressor sound suppression

 #57
20060083651
2006-04-20

Composite dry vacuum pump having roots rotor and screw rotor

 #58
20060029510
2006-02-09

Motor-driven Roots compressor

 #59
20050123429
2005-06-09

Compressor and a method for compressing fluid

 #60
20050123415
2005-06-09

Fluid machine

 #61
20050123414
2005-06-09

Pumping apparatus

 #62
20050099075
2005-05-12

Hermetic motor and gas booster

 #63
20050089424
2005-04-28

Multi-stage vacuum pump

 #64
20050084397
2005-04-21

Gas compressor

 #65
20050019169
2005-01-27

Tempering method for a screw-type vacuum pump