ClassID:

143654

F04C27/004 - CPC Classification

Classification description:

Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids; Radial sealings for working fluid Radial sealing elements specially adapted for intermeshing-engagement type pumps, e.g. gear pumps

Recent Application in this class:
#1
20240084800
2024-03-14

Scroll compressor including a valve plate having a surface pressure enhancement portion protruding toward an injection valve

#2
20240060493
2024-02-22

Scroll machine with injection and refrigeration system

#3
20240060492
2024-02-22

Scroll machine and refrigeration system

#4
20230304497
2023-09-28

Roots pump containing rotors that capture and discharge a foreign substance

#5
20230184251
2023-06-15

Scroll pump with a plurality of bellows sealing a plurality of adjustment members

#6
20210340979
2021-11-04

Roots pump having a seal member with first and second projections

#7
20210095668
2021-04-01

Fluid-injected compressor installation

#8
20200300244
2020-09-24

Seal assembly for high pressure single screw compressor

#9
20200003212
2020-01-02

Single-screw compressor

#10
20180231015
2018-08-16

Sealed rotor assembly for a rotary fluid device

#11
20170321698
2017-11-09

System and Method for Improved Performance of Gerotor Compressors and Expanders

#12
20160369801
2016-12-22

Screw machine and method for operating the same

#13
20160177951
2016-06-23

Sectional sealing system for rotary screw compressor

#14
20160108914
2016-04-21

Gear pump

#15
20160108733
2016-04-21

Silent gear pump or motor suppressing troubles of trapping fluid

#16
20150337836
2015-11-26

Gear pump

#17
20150267702
2015-09-24

Gerotor with reduced leakage

#18
20150267701
2015-09-24

Motor-pump unit

#19
20140294648
2014-10-02

Apparatus for sealing a pump chamber of a rotary lobe pump, and a rotary lobe pump having said apparatus

#20
20130022487
2013-01-24

VANE PUMP

#21
20120124996
2012-05-24

Dual-inlet supercharger for EGR flow control

#22
20110165009
2011-07-07

GATE ROTOR AND SCREW COMPRESSOR

#23
20110131980
2011-06-09

Dual-inlet supercharger for EGR flow control

#24
20100284848
2010-11-11

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

#25
20100278678
2010-11-04

SCREW COMPRESSOR

#26
20100278677
2010-11-04

Screw compressor having a gate rotor assembly with pressure introduction channels

#27
20100260639
2010-10-14

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

#28
20080181803
2008-07-31

Reflux gas compressor

#29
18744217
2025-05-27

Gear pump with suction housing element providing a tight seal between suction and high-pressure chamber to increase pump efficiency and method of providing tight seal