ClassID:

143405

F04C2/04 - CPC Classification

Classification description:

Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal axis type

Sub-classes:
Recent Application in this class:
#1
20250320868
2025-10-16

RADIAL PISTON PUMP

#2
20240263631
2024-08-08

COMPRESSOR UNIT AND REFRIGERATION APPARATUS

#3
20240093666
2024-03-21

HYDROSTATIC RADIAL PISTON UNIT

#4
20240044334
2024-02-08

Scroll compressor with circular surface terminations

#5
20230184252
2023-06-15

Motor-integrated fluid machine

#6
20230063530
2023-03-02

Scroll assembly and scroll compressor

#7
20230055642
2023-02-23

Compressor modulation system with multi-way valve

#8
20230036027
2023-02-02

Compressor modulation system with multi-way valve

#9
20220356879
2022-11-10

Scroll compressor with circular surface terminations

#10
20220010794
2022-01-13

Rotary device and power transmission device

#11
20210310489
2021-10-07

Compressor having external temperature sensor and method of manufacturing compressor

#12
20200343783
2020-10-29

Motor-driven compressor and method of assembling motor-driven compressor

#13
20200208628
2020-07-02

Quad-Quint Pump Systems and Methods

#14
20200025197
2020-01-23

Scroll compressor with buffer member between the orbiting groove and the balance weight

#15
20190309747
2019-10-10

Screw Compressor for a Utility Vehicle

#16
20190301463
2019-10-03

Scroll compressor with circular surface terminations

#17
20190277280
2019-09-12

PUMP DEVICE

#18
20170058673
2017-03-02

Rotary machine

#19
20160194958
2016-07-07

Rotary expansible chamber devices and systems incorporating the same

#20
20150315912
2015-11-05

Rotary machine

#21
20150247405
2015-09-03

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

#22
20150226215
2015-08-13

Variable displacement vane pump and power steering system

#23
20150098851
2015-04-09

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

#24
20140219848
2014-08-07

Hydraulic motor-pump with fixed or variable displacement

#25
20130309113
2013-11-21

Multiple stage passive variable displacement vane pump

#26
20130251570
2013-09-26

Variable Displacement Variable Pressure Vane Pump System

#27
20130202468
2013-08-08

Oval chamber vane pump

#28
20130089446
2013-04-11

Variable capacity vane pump with dual control chambers

#29
20100329912
2010-12-30

Variable capacity vane pump with dual control chambers

#30
20100221126
2010-09-02

Variable displacement variable pressure vane pump system

#31
20090022612
2009-01-22

Variable capacity vane pump with dual control chambers

#32
20070134118
2007-06-14

Oil pump for a compressor

#33
20060198749
2006-09-07

Capacity-changing unit of orbiting vane compressor