Patents-Review.com
ClassID:

143660 ⎘

F04C27/02 - CPC Classification

Classification description:

Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids Liquid sealing for high-vacuum pumps or for compressors

Recent Application in this class:
#1
20240229794
2024-07-11

DRY-COMPRESSION COMPRESSOR AND METHOD FOR OIL SEPARATION FOR A DRY-COMPRESSION COMPRESSOR

 #2
20230296095
2023-09-21

LIQUID BLADE PUMP

 #3
20230279875
2023-09-07

LIQUID BLADE PUMP

 #4
20230146497
2023-05-11

Water-ring vacuum pump including built-in hogging flow path

 #5
20230122823
2023-04-20

Vacuum pump lubricant recovery system returning lubricant from the air filter based on pressure measurements in the vacuum pump

 #6
20230069695
2023-03-02

Scroll compressor with inclined wall surface extending from the dust wrap

 #7
20230033429
2023-02-02

Vacuum pump system and method for operating a vacuum pump system

 #8
20220235772
2022-07-28

VACUUM PUMPING SYSTEM HAVING AN OIL-LUBRICATED VACUUM PUMP

 #9
20220145887
2022-05-12

Lubricant receptacle

 #10
20220112905
2022-04-14

Compressor or vacuum pump device, a liquid return system for such a compressor or vacuum pump device and a method for draining liquid from a gearbox of such a compressor or vacuum pump device

 #11
20210396232
2021-12-23

COMPRESSOR WITH LIQUID INJECTION COOLING

 #12
20200025202
2020-01-23

Compressor with mechanical seal

 #13
20190345938
2019-11-14

Vacuum pump system and method for operating a vacuum pump system

 #14
20190277287
2019-09-12

IMPROVED LIQUID RING PUMP

 #15
20190072095
2019-03-07

Lubrication system for a compressor

 #16
20180023566
2018-01-25

Rotary screw vacuum pumps

 #17
20170306959
2017-10-26

Oil-free screw compressor having atmosphere open hole formed in casing and communication hole formed in shaft seal device

 #18
20170204859
2017-07-20

VACUUM PUMP

 #19
20170204858
2017-07-20

VACUUM PUMP

 #20
20170204857
2017-07-20

Epitrochoidal type compressor

 #21
20170016446
2017-01-19

Oil-free screw compressor

 #22
20160348679
2016-12-01

Vacuum pump system including scroll pump and secondary pumping mechanism

 #23
20160327045
2016-11-10

Method for preventing condensate in the oil of an oil-injected compressor and compressor in which such a method is applied

 #24
20160327041
2016-11-10

Brushless DC compressor in micro-miniature form

 #25
20160312779
2016-10-27

Compressor

 #26
20160312778
2016-10-27

Compressor

 #27
20160238008
2016-08-18

Liquid ring pump port member having anti-cavitation constructions

 #28
20160201672
2016-07-14

Low pressure sealing liquid entry area in a compressor type liquid ring pump

 #29
20160090982
2016-03-31

Liquid ring screw pump functional design

 #30
20150361980
2015-12-17

Scroll compressor with back pressure chamber having leakage channel

 #31
20150147214
2015-05-28

Scroll compressor with thrust sliding surface oiling groove

 #32
20150097339
2015-04-09

Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement

 #33
20140199199
2014-07-17

Gas pump with pressure relief for reducing the starting torque

 #34
20140161645
2014-06-12

Gas pump with a sealing oil groove

 #35
20130251578
2013-09-26

Rotary vacuum pump with a discharge compensating channel

 #36
20120251368
2012-10-04

Pump

 #37
20120230857
2012-09-13

Water injection type screw fluid machine

 #38
20120164015
2012-06-28

Water injection type screw fluid machine

 #39
20110076174
2011-03-31

Screw compression apparatus

 #40
20100232999
2010-09-16

Seal

 #41
20100226808
2010-09-09

Multi stage, clam shell vacuum pump

 #42
20090297376
2009-12-03

Rotary vacuum pump with a discharge compensating channel

 #43
20080304474
2008-12-11

Techniques to synchronize packet rate in voice over packet networks

 #44
20080145257
2008-06-19

Lubricant-tight vane rotary vacuum pump

 #45
20080145209
2008-06-19

Lubricant-tight vane rotary vacuum pump

 #46
20060216186
2006-09-28

Seal assemblies

 #47
20060073033
2006-04-06

Portable, rotary vane vacuum pump with removable oil reservoir cartridge

 #48
17575468
2023-06-13

Electric priming pump device