ClassID:

142675

F04B7/0046 - CPC Classification

Classification description:

Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member for rotating distribution members

Recent Application in this class:
#1
20240288010
2024-08-29

MODE SELECTION VALVE FOR RAT RE-STOW PUMP

#2
20240280101
2024-08-22

Reversible Reciprocating Pump

#3
20240058528
2024-02-22

Rotational metering pump for medication patch

#4
20230366386
2023-11-16

Rotational metering gasket pump

#5
20230310737
2023-10-05

ROTATIONAL METERING PUMP FOR INSULIN PATCH

#6
20230075848
2023-03-09

OSCILLATORY-ROTARY LIQUID DISPENSING DEVICE WITH SPRING, AND ASSOCIATED METHOD

#7
20220176027
2022-06-09

Disposable Medical Flow-Regulating Device and System

#8
20220160958
2022-05-26

Rotational metering pump for insulin patch

#9
20220099074
2022-03-31

Plunger pump, liquid feeding device, and liquid chromatography device

#10
20200362854
2020-11-19

Multi-channel positive displacement pump apparatus

#11
20200224647
2020-07-16

Precise control of suction damping device in a variable displacement compressor

#12
20200222626
2020-07-16

Rotational metering pump for insulin patch

#13
20200217308
2020-07-09

Pumping water at a flow rate equal to a flow rate of a compressed air flowing into a reservoir having a stopper

#14
20200158098
2020-05-21

Electric pump device

#15
20200009516
2020-01-09

High speed injector with an improved steam valve

#16
20190308145
2019-10-10

High speed injector apparatus with dual throttle bodies

#17
20190170128
2019-06-06

Precise control of suction damping device in a variable displacement compressor

#18
20190101107
2019-04-04

Plunger pump having a rotatable plunger with cut face disposed in a cylinder wherein the cylinder includes a main body and a spacer section with the spacer section having a greater length in an axial direction than the maximum stroke length of the plunger

#19
20180258907
2018-09-13

Axial piston machine

#20
20180230993
2018-08-16

Ceramic pump and casting therefor

#21
20170321680
2017-11-09

Compressor

#22
20160032917
2016-02-04

Device for conserving power in a piston compressor

#23
20150316041
2015-11-05

DYNAMICALLY ADJUSTABLE IMPULSE DRIVING FLUID JETTING DEVICE

#24
20140150872
2014-06-05

Rotary control valve for reverse osmosis feed water pump with energy recovery

#25
20130220424
2013-08-29

Rotating compressor valve

#26
20110308239
2011-12-22

Hydraulic engine with infinity drive

#27
20110206545
2011-08-25

Volumetric pump and its driving mechanism

#28
20090274493
2009-11-05

Air discharging apparatus and image forming apparatus

#29
20090175735
2009-07-09

Pump with a direct thrust recovery device for driving fluids

#30
20070062911
2007-03-22

Method and device for supplying at least one machining station for a workpiece