F04C18/082 - CPC Classification Index

ClassID:

143573 ⎘

F04C18/082 - CPC Classification

Classification description:

Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing Details specially related to intermeshing engagement type pumps

Sub-classes:

F04C18/084 » {Toothed wheels} 144
F04C18/086 » {Carter} 63
F04C18/088 » {Elements in the toothed wheels or the carter for relieving the pressure of fluid imprisoned in the zones of engagement} 24

Recent Application in this class:

20250003363

2025-01-02

SUPERCHARGED INTERNAL COMBUSTION ENGINE

20240337262

2024-10-10

SECONDARY AIRFLOW PATHS FOR AIR COMPRESSORS

20240287989

2024-08-29

GAS COMPRESSION SYSTEM

20210025388

2021-01-28

Motor-driven roots pump with smooth activation in low-temperature environment

20190226480

2019-07-25

Motor-driven roots pump

20190203711

2019-07-04

Screw vacuum pump without internal cooling

20170356678

2017-12-14

Miniature low-vibration active cooling system with conical rotary compressor

20170292525

2017-10-12

Integrally geared compressor having a combination of centrifugal and positive displacement compression stages

20170038107

2017-02-09

Screw compressor and chiller unit provided with same

#10

20160265533

2016-09-15

SPIRAL VALVE ACTUATOR FOR AIR COMPRESSOR

#11

20160252093

2016-09-01

Compressor assembly with liquid sensor

#12

20160252092

2016-09-01

Compressor assembly with liquid sensor

#13

20150377208

2015-12-31

Redundant pressure control

#14

20150330387

2015-11-19

Geared hydraulic machine and relative gear wheel

#15

20150308428

2015-10-29

Gear machine with eccentricity at the gearwheels

#16

20150211518

2015-07-30

Compressor system and method of controlling the same

#17

20150167660

2015-06-18

Fluid valve

#18

20150118092

2015-04-30

Compressor having balance mechanism for a thrust bearing

#19

20140322059

2014-10-30

Bearing insert having flattened portion and fluid machine having the same

#20

20140308147

2014-10-16

Gerotor apparatus for a quasi-isothermal Brayton cycle engine

#21

20140093412

2014-04-03

VACUUM PUMP STATORS AND VACUUM PUMPS

#22

20140017110

2014-01-16

SCREW COMPRESSOR SYSTEM

#23

20100266435

2010-10-21

Gerotor apparatus for a quasi-isothermal Brayton cycle engine