ClassID:

143684

F04C29/0028 - CPC Classification

Classification description:

Component parts, details or accessories of pumps or pumping installations, not provided for in groups  - ; Systems for the equilibration of forces acting on the pump Internal leakage control

Recent Application in this class:
#1
20250264103
2025-08-21

SCAVENGE LOSS LIMITER FOR A ROTARY COMPRESSOR

#2
20250075701
2025-03-06

Back pressure regulating valve and an electric type of a scroll compressor with the same

#3
20240301880
2024-09-12

SCROLL COMPRESSOR

#4
20240287904
2024-08-29

Driveshaft assemblies and compressors including the same

#5
20240151227
2024-05-09

Scroll compressor

#6
20240060494
2024-02-22

Scroll compressor with a thrust plate and a flexible thrust sheet member

#7
20220099092
2022-03-31

Motor driven compressor apparatus including swing pin

#8
20220003235
2022-01-06

Rotary compressor

#9
20210404470
2021-12-30

Axial pressure relief in slide bearings of pumps

#10
20200200009
2020-06-25

Rotary engine with housing having silicon carbide plate

#11
20200173436
2020-06-04

Motor driven compressor apparatus including swing pin

#12
20200088197
2020-03-19

Scroll compressor with back pressure chamber and back pressure passages

#13
20190120230
2019-04-25

Scroll fluid machine having a different mesh clearance between the fixed and orbiting scroll wraps

#14
20190032659
2019-01-31

Scroll compressor and air conditioning apparatus including the same

#15
20180363653
2018-12-20

Scroll compressor

#16
20180100506
2018-04-12

SUPERCHARGER HAVING ROTOR WITH PRESS-FIT STUB SHAFTS

#17
20180023567
2018-01-25

Rotary compressor

#18
20170321698
2017-11-09

System and Method for Improved Performance of Gerotor Compressors and Expanders

#19
20170279341
2017-09-28

Motor rotor, motor using this and electric compressor

#20
20170268511
2017-09-21

Scroll compressor with movable non-orbiting scroll

#21
20170045051
2017-02-16

PUMPING METHOD IN A SYSTEM FOR PUMPING AND SYSTEM OF VACUUM PUMPS

#22
20160003246
2016-01-07

Air compression device to prevent backflow of compressed air toward compressor after the compressor is stopped

#23
20150322756
2015-11-12

Subsea multiphase pump or compressor with magnetic coupling and cooling or lubrication by liquid or gas extracted from process fluid

#24
20150267702
2015-09-24

Gerotor with reduced leakage

#25
20150139842
2015-05-21

Progressive cavity pump with uncoupled natural frequency

#26
20150037186
2015-02-05

Structure for stabilizing an orbiting scroll in a scroll compressor

#27
20140119970
2014-05-01

Scroll fluid machine having a sealed compression chamber

#28
20130108495
2013-05-02

High pressure seal vent

#29
20070196228
2007-08-23

Dry Pumps

#30
20050129561
2005-06-16

Gapless screw rotor device

#31
20050084404
2005-04-21

Gas compression apparatus capable of preventing lubricant leakage

#32
18581865
2025-02-04

Scavenge loss limiter for a rotary compressor