ClassID:

143437

F04C2/165 - CPC Classification

Classification description:

Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type having more than two rotary pistons with parallel axes

Recent Application in this class:
#1
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Screw Pump and its Components

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SCREW PUMP AND ITS COMPONENTS

#3
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FLUID CIRCULATING APPARATUS

#4
20240410363
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SCREW PUMP AND ITS COMPONENTS

#5
20240401589
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ELEMENT FOR A COUNTER-ROTATING TWIN-SCREW PROCESSOR

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Screw assembly for a triple screw pump and screw pump comprising said assembly

#7
20240263576
2024-08-08

Integrated cooling module

#8
20240254988
2024-08-01

Gear Pump

#9
20240125322
2024-04-18

Screw assembly for a triple screw pump and triple screw pump comprising said assembly

#10
20220186726
2022-06-16

Screw spindle pump having a stop surface axially adjacent to an end surface of a running spindle

#11
20210164466
2021-06-03

Screw spindle pump

#12
20200132070
2020-04-30

Screw spindle pump, fuel pump assembly, and fuel pump unit

#13
20190186487
2019-06-20

Method for modifying performance of rotor profile by adjusting meshing line segments

#14
20190085844
2019-03-21

Screw pump

#15
20190036431
2019-01-31

Switched reluctance motor and application thereof

#16
20180355864
2018-12-13

Modular system for producing a screw spindle pump

#17
20180291893
2018-10-11

Threaded spindle machine

#18
20180187675
2018-07-05

Modular thrust-compensating rotor assembly

#19
20150369241
2015-12-24

Screw pump

#20
20150354562
2015-12-10

Gear pump driven gear stationary bearing

#21
20150167671
2015-06-18

Dual mechanical seal with embedded bearing for volatile fluids

#22
20150159648
2015-06-11

PLANETARY ROTOR MACHINE WITH SYNCHRONIZING MECHANISM

#23
20140255232
2014-09-11

Planetary rotor machine manifold

#24
20140178238
2014-06-26

Pump, pump system and method for pumping a medium

#25
20130302196
2013-11-14

Multi-channel, rotary, progressing cavity pump with multi-lobe inlet and outlet ports

#26
20130202473
2013-08-08

Two-spindle screw pump of double-flow construction

#27
20130022458
2013-01-24

Screw pump having an integrated pressure limiting valve

#28
20120258000
2012-10-11

System and method for monitoring pump lining wear

#29
20100329900
2010-12-30

Pump for pumping fluid in a wellbore using a fluid displacer means

#30
20100021332
2010-01-28

Screw pump

#31
20070237023
2007-10-11

Gear pump having input and output screw shafts with a decreasing flight depth toward a gear section in transfer mix areas

#32
20070134121
2007-06-14

Screw pump

#33
20060216190
2006-09-28

Screw pump

#34
20060216162
2006-09-28

Pump for pumping fluids