ClassID:

143554

F04C18/0223 - CPC Classification

Classification description:

Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving with symmetrical double wraps

Recent Application in this class:
#1
20250237215
2025-07-24

Vortex Compressor

#2
20240209855
2024-06-27

Vacuum pump with movable trapezoidal seal

#3
20220136503
2022-05-05

Scroll compressor

#4
20220034321
2022-02-03

Dry dual-scroll vacuum pump

#5
20210381507
2021-12-09

Scroll compressor having cooling pipe moving synchronously with orbiting scroll and rotating with respect to crankshaft

#6
20210190070
2021-06-24

Compressor having capacity modulation assembly

#7
20210148360
2021-05-20

Oil-free scroll air compressor with double parallel grooves on both sides

#8
20210148359
2021-05-20

Scroll compressor having hub plate

#9
20200386227
2020-12-10

CO-ROTATING SCROLL COMPRESSOR

#10
20200102955
2020-04-02

Fluid compressor

#11
20190353164
2019-11-21

Compressor having capacity modulation assembly

#12
20190338779
2019-11-07

Liquid cooling of fixed and orbiting scroll compressor, expander or vacuum pump

#13
20190277285
2019-09-12

Compressor with discharge valve

#14
20190219316
2019-07-18

Scroll unloading detection system

#15
20190211824
2019-07-11

Multi-stage scroll vacuum pumps and related scroll devices

#16
20190186491
2019-06-20

Variable volume ratio compressor

#17
20190128266
2019-05-02

Scroll compressor

#18
20190040861
2019-02-07

Scroll compressor having hub plate

#19
20180363654
2018-12-20

Scroll compressor with axial flux motor

#20
20180274543
2018-09-27

Scroll compressor having an oil discharge device

#21
20180223849
2018-08-09

Scroll compressor with axial flux motor

#22
20180180339
2018-06-28

Scroll unloading detection system

#23
20180128269
2018-05-10

Scroll compressor

#24
20180066659
2018-03-08

Electrically-driven compressor

#25
20180038370
2018-02-08

Variable volume ratio compressor

#26
20180038369
2018-02-08

Variable volume ratio compressor

#27
20170268514
2017-09-21

Scroll device having a pressure plate

#28
20170241420
2017-08-24

Scroll compressor provided with an orbiting guiding portion for improving the filling of the compression chambers

#29
20170074267
2017-03-16

Scroll compressor with a lubrication arrangement

#30
20170051744
2017-02-23

Three stage scroll vacuum pump

#31
20170051742
2017-02-23

Low vibration scroll compressor for aircraft application

#32
20170022989
2017-01-26

UNFASTENED THRUST PLATE

#33
20160348679
2016-12-01

Vacuum pump system including scroll pump and secondary pumping mechanism

#34
20160327042
2016-11-10

Multi stage scroll vacuum pumps and related scroll devices

#35
20160273538
2016-09-22

Variable volume ratio compressor

#36
20160238006
2016-08-18

Scroll compressor

#37
20160222965
2016-08-04

Scroll-type compressor

#38
20160201673
2016-07-14

Discharge valve and compressor comprising same

#39
20160146206
2016-05-26

Scroll compressor

#40
20160131136
2016-05-12

Tip seal

#41
20160131133
2016-05-12

Scroll fluid machine including pins and guide rings

#42
20160123326
2016-05-05

Scroll compressor including oldham coupling having keys that are slidingly received in slots of a non-orbiting scroll and/or an orbiting scroll

#43
20160123325
2016-05-05

Compressor and method of autonomously inspecting oil

#44
20160123324
2016-05-05

Scroll compressor

#45
20160115955
2016-04-28

Compressor shell assembly

#46
20160115954
2016-04-28

Compressor

#47
20160108917
2016-04-21

Scroll compressor

#48
20160069347
2016-03-10

Method for soft expulsion of a fluid from a compressor at start-up

#49
20160053760
2016-02-25

Housing for a fan of a scroll compressor

#50
20160053759
2016-02-25

Scroll compressor with recesses and protrusions

#51
20160040673
2016-02-11

Scroll compressor with shaft eccentric lubrication

#52
20150345493
2015-12-03

Variable volume ratio scroll compressor

#53
20150338143
2015-11-26

Electric compressor

#54
20150337840
2015-11-26

Compressor having external shell with vibration isolation and pressure balance

#55
20150337838
2015-11-26

Scroll compressor

#56
20150316055
2015-11-05

Scroll compressor having a back pressure chamber assembly disposed on a fixed scroll plate and an elastic member disposed between a floating plate and a discharge cover

#57
20150316054
2015-11-05

SCROLL COMPRESSOR

#58
20150316053
2015-11-05

Scroll compressor and method for assembling a scroll compressor

#59
20150300354
2015-10-22

Hydrodynamic bearing applied on a contact interface of a fluid compressor based on a spiral type mechanism

#60
20150275898
2015-10-01

Alignment feature for a lower bearing assembly for a scroll compressor

#61
20150247500
2015-09-03

Key coupling and scroll compressor incorporating same

#62
20150233377
2015-08-20

ELECTRICALLY-DRIVEN COMPRESSOR

#63
20150233375
2015-08-20

Scroll compressor

#64
20150219101
2015-08-06

Scroll compressor including seal with axial length that is greater than radial width

#65
20150098852
2015-04-09

SCROLL COMPRESSOR

#66
20150078945
2015-03-19

Scroll compressor

#67
20140147325
2014-05-29

Water injected scroll air compressor

#68
20130315765
2013-11-28

Three stage scroll vacuum pump

#69
20130294956
2013-11-07

Scroll fluid machine with axial sealing unit

#70
20120230849
2012-09-13

Motor-driven compressor and mounting method for motor-driven compressor

#71
20120006305
2012-01-12

Supercharging device for compressing charge air for an internal combustion engine

#72
20110300013
2011-12-08

Scroll fluid machine

#73
20110256007
2011-10-20

Three stage scroll vacuum pump

#74
20110194963
2011-08-11

Water injected scroll air compressor

#75
20110193452
2011-08-11

Inverter-integrated electric compressor and assembly method therefor

#76
20110129362
2011-06-02

Water-injection type scroll air compressor

#77
20110027116
2011-02-03

Positive displacement machine according to the spiral principle

#78
20100202909
2010-08-12

Fluid machine and refrigeration cycle apparatus

#79
20100183466
2010-07-22

Displacement machine with improved support

#80
20100175946
2010-07-15

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

#81
20100158733
2010-06-24

Oil-free scroll compressor

#82
20100080722
2010-04-01

Scroll compressor with balancer and oil passages

#83
20090229582
2009-09-17

Vehicle having internal combustion engine with supercharger

#84
20090185936
2009-07-23

Scroll compressor

#85
20090123315
2009-05-14

Scroll compressor having a slider with a flat surface slidable and fitted in a notch part of a main shaft

#86
20080219871
2008-09-11

Scroll compressor

#87
20080193313
2008-08-14

Scroll compressor with an orbiting scroll and two fixed scrolls and ring and tip seals

#88
20080159888
2008-07-03

FLUID MACHINE CONNECTED TO A DRIVE SOURCE VIA A MAGNETIC COUPLING

#89
20070224069
2007-09-27

Scroll fluid machine having forced convection generating portion

#90
20070212245
2007-09-13

Scroll fluid machine having an adjustment member for correcting an error in orbiting motion between fixed and orbiting scrolls

#91
20070196226
2007-08-23

Scroll fluid machine having an adiabatic expansion chamber

#92
20070178001
2007-08-02

Scroll fluid machine

#93
20070172372
2007-07-26

Scroll fluid machine having a fixed scroll with a heat-releasing projection

#94
20060228244
2006-10-12

Scroll compressor with multiple isolated inlet ports

#95
20060222548
2006-10-05

Scroll fluid machine with a silencer

#96
20060222522
2006-10-05

Vapor Compression Evaporative Air Conditioning systems and Components

#97
20060216181
2006-09-28

SCROLL FLUID MACHINE COMPRISING COMPRESSING AND EXPANDING SECTIONS

#98
20060216180
2006-09-28

SCROLL FLUID MACHINE COMPRISING COMPRESSING AND EXPANDING SECTIONS

#99
20060150670
2006-07-13

Refrigeration Apparatus

#100
20060073050
2006-04-06

Complex fluid machine

#101
20050172622
2005-08-11

Scroll-type expander having heating structure and scroll-type heat exchange system employing the expander

#102
20050031469
2005-02-10

Scroll fluid machine comprising compressing and expanding sections