Patents-Review.com
ClassID:

143414 ⎘

F04C2/082 - 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 Details specially related to intermeshing engagement type machines or pumps

Sub-classes:
Recent Application in this class:
#1
20260016011
2026-01-15

MULTI-STAGE HOOK AND CLAW COMPRESSOR ASSEMBLY

 #2
20250369371
2025-12-04

PUMP ASSEMBLY FOR GAS TURBINE ENGINES

 #3
20250300523
2025-09-25

ELECTRIC LIQUID PUMP

 #4
20250300522
2025-09-25

ELECTRIC LIQUID PUMP

 #5
20250297604
2025-09-25

ELECTRIC LIQUID PUMP

 #6
20250297603
2025-09-25

ELECTRIC LIQUID PUMP

 #7
20250264100
2025-08-21

Rotary Pump with Rotor Bearing Cap

 #8
20250188924
2025-06-12

BEARING BLOCK FOR A GEAR PUMP ASSEMBLY

 #9
20240093684
2024-03-21

Outer ring for an oil pump and a method for manufacturing the same

 #10
20230141341
2023-05-11

Pressure pockets on the hollow wheel

 #11
20230052262
2023-02-16

Outer ring for an oil pump and a method for manufacturing the same

 #12
20230032135
2023-02-02

Gear pump or motor with communication paths to suction and discharge in closed space between the drive and driven gears

 #13
20220268275
2022-08-25

POSITIVE DISPLACEMENT PUMP SHAFT BEARING ASSEMBLY

 #14
20220186834
2022-06-16

Pump with a multi-layered bead gasket

 #15
20210164466
2021-06-03

Screw spindle pump

 #16
20200332796
2020-10-22

Serviceable fluid pump

 #17
20200132070
2020-04-30

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

 #18
20200088285
2020-03-19

Pressure compensated external gear machine

 #19
20200025241
2020-01-23

High efficiency gear pump bearing assembly

 #20
20190301454
2019-10-03

Rotary piston pump having a sealing chamber seal

 #21
20190024657
2019-01-24

Pump with bleed mechanism for reducing cavitation

 #22
20160194958
2016-07-07

Rotary expansible chamber devices and systems incorporating the same

 #23
20150330387
2015-11-19

Geared hydraulic machine and relative gear wheel

 #24
20150247405
2015-09-03

Refrigeration system including a rotary expansible chamber device having adjustable working-fluid ports

 #25
20150167667
2015-06-18

OIL PUMP DEVICE

 #26
20150167665
2015-06-18

MULTISTAGE OIL PUMP

 #27
20150098851
2015-04-09

Rotary expansible chamber devices having adjustable arcs of rotation, and systems incorporating the same

 #28
20140327554
2014-11-06

REMOTE MONITORING SYSTEM OF UNIAXIAL ECCENTRIC SCREW PUMP

 #29
20140119974
2014-05-01

Lightweight and flexible rotors for positive displacement devices

 #30
20140119967
2014-05-01

Rotary expansible chamber devices having adjustable working-fluid ports, and systems incorporating the same

 #31
20130089453
2013-04-11

Vehicular internal gear type oil pump

 #32
20120263618
2012-10-18

Bi-metal pump gear

 #33
20120015109
2012-01-19

FLUOROPOLYMER-CONTAINING FILMS FOR USE WITH POSITIVE-DISPLACEMENT FLUID PUMPS

 #34
20090132038
2009-05-21

Rotary displacement pump with smaller radial dimensions

 #35
20080247896
2008-10-09

Fluoropolymer-containing films for use with positive-displacement fluid pumps

 #36
20070269325
2007-11-22

Modular Volumetric Compressor

 #37
20070231176
2007-10-04

Internal gear pump

 #38
20060257267
2006-11-16

Pump system for an automotive engine

 #39
20060039804
2006-02-23

Motor-pump unit

 #40
16166779
2019-04-02

Transfer case oil pump assembly

 #41
14626175
2016-06-28

Replaceable rotor pads for use with positive displacement pump