ClassID:

142749

F04B9/133 - CPC Classification

Classification description:

Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting elastic-fluid motor

Recent Application in this class:
#1
20240125311
2024-04-18

Fluid transfer and depressurization system

#2
20230372963
2023-11-23

Double-acting piston pump of application system

#3
20220325705
2022-10-13

Motor and hydraulic pump device including the motor

#4
20220186679
2022-06-16

PRESSURE BOOST SYSTEM

#5
20210396218
2021-12-23

Dual pneumo-hydraulic pump unit

#6
20210355924
2021-11-18

Fluid transfer and depressurization system

#7
20210340964
2021-11-04

Method for operating double-acting piston pump of application system

#8
20210301838
2021-09-30

Pressure booster

#9
20210131418
2021-05-06

Fluid pump with dual plungers and related systems and methods

#10
20210033085
2021-02-04

Device and method for compressing a working medium

#11
20200332793
2020-10-22

Reciprocating fluid pump including at least one magnet on a spool of a shuttle valve

#12
20190366271
2019-12-05

System and method for purifying liquid by reverse osmosis

#13
20190316582
2019-10-17

Piston pump and seal ring

#14
20180370075
2018-12-27

Apparatus for the production of a mixture of at least one gas and at least one liquid plastic component

#15
20170292342
2017-10-12

Bidirectional piston seals with pressure compensation

#16
20170248136
2017-08-31

Conveying device for conveying a flowable medium

#17
20170152841
2017-06-01

Exhaust air conduit for a coating agent pump

#18
20160305410
2016-10-20

High-pressure to low-pressure changeover valve for a positive displacement pump

#19
20150322973
2015-11-12

Air-to-hydraulic fluid pressure amplifier

#20
20140377086
2014-12-25

Air-driven pump system

#21
20140033910
2014-02-06

Method to prevent debris build-up on reciprocating air motor pilot valves

#22
20130101440
2013-04-25

AIR COMPRESSOR POWERED BY DIFFERENTIAL GAS PRESSURE

#23
20110236224
2011-09-29

Air-driven pump system

#24
20110229352
2011-09-22

High Pressure Double Membrane Pump and Membrane Element for Such a Pump

#25
20100284834
2010-11-11

Air operated diaphragm pump with electric generator

#26
20090126562
2009-05-21

Combined piston-expander compressor

#27
20070286746
2007-12-13

Ventless gas-driven pumping system

#28
20070128053
2007-06-07

Pump

#29
20060159565
2006-07-20

Method and system for pumping powder, and powder coating apparatus

#30
20060024180
2006-02-02

Fluidic compressor

#31
20050100454
2005-05-12

Device for circulating sealing gas for mechanical dry seals of a centrifugal compressor at times when the machine is stationary and pressurized

#32
20050053476
2005-03-10

Diaphragm pump system

#33
20050047935
2005-03-03

Steam powered free piston pump

#34
16129225
2019-10-15

Fluid transfer and depressurization system

#35
15801710
2019-02-19

Uniformly pressurized thermal energy recovery systems