ClassID:

143433

F04C2/123 - 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 radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth

Recent Application in this class:
#1
20240328415
2024-10-03

Electronic positive displacement fluid pump with motor cooling and air purging

#2
20240060489
2024-02-22

PUMP FOR CONVEYING A FLUID

#3
20230184246
2023-06-15

Screw spindle pump

#4
20230138342
2023-05-04

Rotary positive displacement pump

#5
20220243727
2022-08-04

ROTOR AND PUMP

#6
20210079917
2021-03-18

GEAR PUMP AND GEAR MOTOR

#7
20200400022
2020-12-24

Rotary piston engine and method for operating a rotary piston engine

#8
20200309123
2020-10-01

Gear pump bearing with hybrid pad shutoff

#9
20200240248
2020-07-30

Automatic pump control

#10
20200208629
2020-07-02

PUMP ASSEMBLY HAVING TWO PUMPS PROVIDED IN A SINGLE HOUSING

#11
20200024947
2020-01-23

Gear pump bearings

#12
20160281709
2016-09-29

Multiple segment lobe pump

#13
20160047377
2016-02-18

Positive displacement gear pump

#14
20150056063
2015-02-26

Metering pump made of plastic

#15
20140331856
2014-11-13

Piston with replaceable and/or adjustable surfaces

#16
20140271312
2014-09-18

Piston with replaceable and/or adjustable surfaces

#17
20140065002
2014-03-06

Positive displacement pump with improved sealing arrangement and related method of making

#18
20130011292
2013-01-10

Dual rotor pump

#19
20120207637
2012-08-16

PERIPHERAL PUMP-TURBINE

#20
20110027118
2011-02-03

DEVICE WITH ROTARY PISTONS THAT CAN BE USED AS A COMPRESSOR, A PUMP, A VACUUM PUMP, A TURBINE, A MOTOR AND AS OTHER DRIVING AND DRIVEN HYDRAULIC-PNEUMATIC MACHINES

#21
20110020162
2011-01-27

Screw rotor

#22
20080069707
2008-03-20

Positive displacement pump apparatus and method

#23
20060083638
2006-04-20

Self-priming positive displacement constant flow high capacity pump

#24
20050095160
2005-05-05

Pump

#25
13341279
2015-04-28

Positive displacement pump with improved rotor design