ClassID:

143626

F04C18/52 - CPC Classification

Classification description:

Rotary-piston pumps specially adapted for elastic fluids; Rotary-piston pumps with non-parallel axes of movement of co-operating members the axes being arranged at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

Recent Application in this class:
#1
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2025-01-09

SCREW COMPRESSOR AND REFRIGERATION APPARATUS

#2
20240401594
2024-12-05

Screw compressor, and refrigeration apparatus

#3
20230027313
2023-01-26

Self-positioning volume slide valve for screw compressor

#4
20220136506
2022-05-05

Slide valve of a single screw compressor

#5
20220034319
2022-02-03

Screw compressor

#6
20210396230
2021-12-23

High suction pressure single screw compressor with thrust balancing load using shaft seal pressure and related methods

#7
20210131435
2021-05-06

Screw compressor having slide valve with crescent-shaped valve body and cylindrical guide portion

#8
20200300244
2020-09-24

Seal assembly for high pressure single screw compressor

#9
20200032800
2020-01-30

Single-screw compressor with a gap adjuster mechanism

#10
20200003212
2020-01-02

Single-screw compressor

#11
20200003211
2020-01-02

SCREW COMPRESSOR

#12
20190331114
2019-10-31

Bearing for a screw rotor of a screw compressor

#13
20190195226
2019-06-27

High suction pressure single screw compressor with thrust balancing load using shaft seal pressure and related methods

#14
20190120232
2019-04-25

Screw compressor

#15
20180017058
2018-01-18

Screw compressor with an hydropneumatic cylinder integral with the bearing holder

#16
20170051745
2017-02-23

Discharge muffler

#17
20160230869
2016-08-11

Method for collaboratively constructing column envelope profile of two flanks of star wheel tooth

#18
20150308458
2015-10-29

Screw compressor

#19
20140083130
2014-03-27

Apparatus and method for enhancing compressor efficiency

#20
20130216418
2013-08-22

Screw compressor

#21
20130171018
2013-07-04

Screw compressor with slide valve including a sealing projection

#22
20130129553
2013-05-23

Single screw compressor with high output

#23
20130011291
2013-01-10

Single-screw compressor having an adjustment mechanism for adjusting a compression ratio of the compression chamber

#24
20120258005
2012-10-11

Single screw compressor

#25
20120183418
2012-07-19

Screw compressor having reverse rotation protection

#26
20120100028
2012-04-26

Screw compressor having slide valve with inclined end face

#27
20120027634
2012-02-02

Screw compressor having a second meshing body with at least one projection non-uniformly arranged with respect to the other projections in circumferential direction

#28
20120009079
2012-01-12

Single screw compressor

#29
20120003113
2012-01-05

Screw compressor

#30
20110256011
2011-10-20

Slide for use in a screw compressor

#31
20110165009
2011-07-07

GATE ROTOR AND SCREW COMPRESSOR

#32
20110097232
2011-04-28

Single screw compressor and a method for processing a screw rotor

#33
20110070117
2011-03-24

Single screw compressor

#34
20100329918
2010-12-30

Screw compressor having injection having injection mechanism that injects oil or refrigerant toward a starting end of an extending direction of a helical groove of the female rotor or the male rotor

#35
20100284848
2010-11-11

Screw compressor with adjacent helical grooves selectively opening to first and second ports

#36
20100278678
2010-11-04

SCREW COMPRESSOR

#37
20100278677
2010-11-04

Screw compressor having a gate rotor assembly with pressure introduction channels

#38
20100260639
2010-10-14

Screw compressor including a single screw rotor with first and second screw groove being bilaterally symmetric

#39
20100260637
2010-10-14

Single screw compressor

#40
20100260620
2010-10-14

Screw compressor with capacity control slide valve

#41
20100247364
2010-09-30

Single screw compressor structure

#42
20100229595
2010-09-16

Compressor and refrigerating apparatus

#43
20100183468
2010-07-22

Single screw compressor structure and method of assembling single screw compressor including the same

#44
20100158737
2010-06-24

Screw compressor

#45
20100074785
2010-03-25

Compressor with screw rotor and gate rotor with inclined gate rotor center axis

#46
20100003153
2010-01-07

Compressor with screw rotor and gate rotor

#47
20090148323
2009-06-11

Rotary Machine and Combustion Engine

#48
20080240939
2008-10-02

Compressor having a high pressure slide valve assembly

#49
20080206075
2008-08-28

Compressor having a dual slide valve assembly

#50
20060285966
2006-12-21

Screw compressor and freezer

#51
20050123429
2005-06-09

Compressor and a method for compressing fluid

#52
18675818
2025-07-29

Self-positioning volume slide control with position feedback for screw compressor

#53
18675800
2025-08-05

Self-positioning volume slide control for screw compressor