ClassID:

142661

F04B5/00 - CPC Classification

Classification description:

Machines or pumps with differential-surface pistons

Sub-classes:
Recent Application in this class:
#1
20250297601
2025-09-25

HYDRAULIC PISTON PUMP ASSEMBLIES

#2
20220126084
2022-04-28

Cooling of a drive system for diaphragm pumps

#3
20210394524
2021-12-23

DISPLACEMENT PUMP

#4
20200340461
2020-10-29

Intensity modifiable intensifier pump

#5
20190203704
2019-07-04

Device for generating a pulsating hydraulic fluid pressure by a drivable working piston guided in a cylinder and an auxiliary piston guided in an auxiliary cylinder wherein the auxiliary piston transfers fluid to an auxiliary channel only in a first stroke section

#6
20190145391
2019-05-16

Double acting positive displacement fluid pump

#7
20180149151
2018-05-31

Pump device for a brake system with a reluctance drive

#8
20170350377
2017-12-07

Pump capable of dispensing both a large volume and a small volume of colorant

#9
20170349426
2017-12-07

Control valve for pouring color paste in both large amount and small amount

#10
20170291586
2017-10-12

Piston pump having a stepped piston

#11
20160341186
2016-11-24

Hydraulic double-acting hand pump

#12
20160108900
2016-04-21

Piston pump

#13
20160069344
2016-03-10

High pressure paint pump

#14
20150354553
2015-12-10

Compression device having connection unit for cooling unit

#15
20150104332
2015-04-16

Adaptive hydraulic pressure generator

#16
20150086386
2015-03-26

MULTI-CHAMBER PUMP APPARATUS, SYSTEMS, AND METHODS

#17
20140056731
2014-02-27

Hydraulically controlled reciprocating pump system

#18
20130287611
2013-10-31

Double acting refrigeration compressor

#19
20110123363
2011-05-26

Hydraulically controlled reciprocating pump system

#20
20100269685
2010-10-28

Hydraulic machine, in particular hydraulic motor, with a reciprocating movement, and differential piston for such a machine

#21
20100095690
2010-04-22

Compressor

#22
20100074783
2010-03-25

High pressure pump having plunger

#23
20100074782
2010-03-25

High pressure pump having plunger

#24
20100074776
2010-03-25

Subsea chemical injection system and pumps therefor

#25
20090246045
2009-10-01

Device for Concentrating a Liquid, and Differential Piston Pump

#26
20090104045
2009-04-23

High pressure pump having plunger

#27
20080080990
2008-04-03

Discharge pressure actuated pump

#28
20080063544
2008-03-13

Discharge pressure actuated pump

#29
20070128058
2007-06-07

High-pressure pump

#30
20060159555
2006-07-20

High pressure pump having plunger

#31
20060048729
2006-03-09

Supercharged two-stroke engine with upper piston extensions

#32
20050205025
2005-09-22

Apparatus with piston having upper piston extensions