ClassID:

143847

F04C2250/201 - CPC Classification

Classification description:

Geometry of the rotor conical shape

Recent Application in this class:
#1
20260146608
2026-05-28

COMPLEX SCREW ROTORS

#2
20250290507
2025-09-18

PROGRESSING CAVITY DEVICES AND ASSEMBLIES FOR COUPLING MULTIPLE STAGES OF PROGRESSING CAVITY DEVICES

#3
20240426298
2024-12-26

COMPLEX SCREW ROTORS

#4
20230272797
2023-08-31

Complex screw rotors having multiple helical profiles joined by a centeral portion with a pocket

#5
20230167823
2023-06-01

Volume ratio for a R718* compressor

#6
20230167818
2023-06-01

Eccentric screw pump with working engagement and idle engagement and method for controlling the eccentric screw pump

#7
20220145882
2022-05-12

PROGRESSING CAVITY DEVICES AND ASSEMBLIES FOR COUPLING MULTIPLE STAGES OF PROGRESSING CAVITY DEVICES

#8
20210231122
2021-07-29

Complex screw rotors

#9
20200124046
2020-04-23

Controlling the gap geometry in an eccentric screw pump

#10
20190234215
2019-08-01

Rotary piston and cylinder device with single stator side

#11
20190154038
2019-05-23

Pressure changing device

#12
20180335031
2018-11-22

Scroll compressor for a vehicle air-conditioning system having spiral wall including conical cut

#13
20180258934
2018-09-13

Complex screw rotors

#14
20180003174
2018-01-04

Method to improve downhole motor durability

#15
20170356678
2017-12-14

Miniature low-vibration active cooling system with conical rotary compressor

#16
20170204727
2017-07-20

Rotary piston and cylinder devices

#17
20170130583
2017-05-11

Positive displacement rotary motion device including a pulse detonation device

#18
20170059211
2017-03-02

Miniature low-vibration active cooling system with conical rotary compressor

#19
20150369241
2015-12-24

Screw pump

#20
20150044015
2015-02-12

Side channel liquid ring pump and impeller for side channel liquid ring pump

#21
20140216000
2014-08-07

Indexed positive displacement rotary motion device

#22
20120034122
2012-02-09

Pump with a resilient seal

#23
20110305589
2011-12-15

Helical gear pump

#24
20100296958
2010-11-25

Screw pump having varying pitches

#25
20100260636
2010-10-14

Moineau pump

#26
20100247364
2010-09-30

Single screw compressor structure

#27
20100074786
2010-03-25

Indexed positive displacement rotary motion device

#28
20090214369
2009-08-27

Eccentric screw pump

#29
20080138230
2008-06-12

Pressure sealed tapered screw pump/motor

#30
20070196228
2007-08-23

Dry Pumps

#31
20070071625
2007-03-29

Blending pump assembly