ClassID:

143147

F04B49/243 - CPC Classification

Classification description:

Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups  -  by means of valves; Bypassing by keeping open the inlet valve

Recent Application in this class:
#1
20260146602
2026-05-28

CONTROLLING SUCTION VALVES OF A FLUID PUMP

#2
20250382956
2025-12-18

CONTROLLING SUCTION VALVES OF A FLUID PUMP

#3
20250341263
2025-11-06

ELECTRO-MAGNETIC THROTTLE VALVE WITH INTEGRATED BLOWDOWN CONDUIT

#4
20240328530
2024-10-03

ELECTRO-MAGNETIC THROTTLE VALVE

#5
20230213026
2023-07-06

VACUUM SYSTEM APPARATUS AND METHOD

#6
20220364535
2022-11-17

Fuel pump with inlet valve assembly

#7
20210180587
2021-06-17

Governor device for controlling a compressor

#8
20210054838
2021-02-25

Minimum pressure valve and method for servicing such a valve

#9
20200277951
2020-09-03

PUMPING SYSTEM WITH ACTUATOR

#10
20200116141
2020-04-16

High pressure pump and method for compressing a fluid

#11
20190293064
2019-09-26

Gas operated infinite step valve

#12
20190249670
2019-08-15

Method and device for venting the suction side of a synthetically commutated hydraulic pump

#13
20190107106
2019-04-11

Fuel pump for pressurizing low pressure fuel suctioned into a pressurizing chamber and discharging high pressure fuel pressurized in the pressurizing chamber

#14
20190048869
2019-02-14

FLUID-WORKING MACHINE AND OPERATING METHOD

#15
20180163683
2018-06-14

High pressure fuel supply pump with electromagnetic suction valve

#16
20180031138
2018-02-01

Flow control actuator for reciprocating compressors

#17
20170342969
2017-11-30

Pump, in particular a high-pressure fuel pump

#18
20170306905
2017-10-26

High pressure fuel supply pump

#19
20170298928
2017-10-19

FLUID-WORKING MACHINE AND OPERATING METHOD

#20
20160169222
2016-06-16

Fluid-working machine and operating method

#21
20160160826
2016-06-09

High pressure fuel supply pump with electromagnetic suction valve

#22
20160032917
2016-02-04

Device for conserving power in a piston compressor

#23
20150300349
2015-10-22

Variable fluid flow hydraulic pump

#24
20150275892
2015-10-01

Fuel pump for an internal combustion engine

#25
20150139835
2015-05-21

Unloader for a valve element of a compressor valve

#26
20150044080
2015-02-12

Reciprocating compressor having capacity regulation

#27
20140294619
2014-10-02

Electronic infinite step controller actuator

#28
20140193281
2014-07-10

Fuel pump for an internal combustion engine

#29
20140154100
2014-06-05

Fuel pump with metering valve

#30
20130259719
2013-10-03

Air compressor having mechanical govenor with engine speed relief

#31
20130149173
2013-06-13

Multistage compressors for pet bottle blowing processes

#32
20130047600
2013-02-28

Charged hydraulic system

#33
20130032212
2013-02-07

Control method of magnetic solenoid valve, control method of electromagnetically controlled inlet valve of high pressure fuel pump, and control device for electromagnetic actuator of electromagnetically controlled inlet valve

#34
20120207623
2012-08-16

Method for Controlling Delivery Quantity, and Reciprocating Compressor Having Delivery Quantity Control

#35
20120189467
2012-07-26

Method for Controlling Delivery Quantity, and Reciprocating Compressor Having Delivery Quantity Control

#36
20120152379
2012-06-21

Suction valve with unloader

#37
20120093670
2012-04-19

High-pressure fuel supply pump having electromagnetically-driven intake valve

#38
20120036992
2012-02-16

PISTON MACHINE, ESPECIALLY FLUID PISTON MACHINE

#39
20110123354
2011-05-26

Fluid-working machine and operating method

#40
20100303657
2010-12-02

Operating method for fluid working machine

#41
20100303638
2010-12-02

Method of operating a fluid working machine

#42
20100183448
2010-07-22

Methods of use for a positive displacement pump having an externally assisted valve

#43
20100086415
2010-04-08

Reciprocating compressor

#44
20100074783
2010-03-25

High pressure pump having plunger

#45
20100074782
2010-03-25

High pressure pump having plunger

#46
20100047086
2010-02-25

Fuel pump

#47
20090317266
2009-12-24

Digital hydraulic pump/motor torque modulation system and apparatus

#48
20090297375
2009-12-03

ELECTROMAGNETIC VALVE, FLUID PUMP HAVING THE VALVE, AND FLUID INJECTOR HAVING THE VALVE

#49
20090238700
2009-09-24

Equipment for continuous regulation of the flow rate of reciprocating compressors

#50
20090235900
2009-09-24

Control device of high-pressure fuel pump of internal combustion engine

#51
20090178652
2009-07-16

High pressure fuel supply pump for internal combustion engine

#52
20090126688
2009-05-21

Fuel pump control for a direct injection internal combustion engine

#53
20090116987
2009-05-07

PUMP

#54
20090113888
2009-05-07

Charged hydraulic system

#55
20090104045
2009-04-23

High pressure pump having plunger

#56
20090097997
2009-04-16

Fuel pump

#57
20090093942
2009-04-09

Control device of high-pressure fuel pump of internal combustion engine

#58
20090068041
2009-03-12

Low back-flow pulsation fuel injection pump

#59
20090041588
2009-02-12

Active valve system for positive displacement pump

#60
20080279706
2008-11-13

Valve-seat interface architecture

#61
20080279705
2008-11-13

Externally assisted valve for a positive displacement pump

#62
20080237518
2008-10-02

Hydraulic pump

#63
20080149195
2008-06-26

Suction valve with unloader

#64
20070286742
2007-12-13

High-pressure fuel pump

#65
20070272890
2007-11-29

Electromagnetic actuators

#66
20070253838
2007-11-01

Air compressor unloader system

#67
20070154335
2007-07-05

Air compressor unit inlet control method

#68
20070107698
2007-05-17

High pressure fuel pump provided with damper

#69
20060239846
2006-10-26

High pressure pump having solenoid actuator

#70
20060159555
2006-07-20

High pressure pump having plunger

#71
20060147317
2006-07-06

Control device of high-pressure fuel pump of internal combustion engine

#72
20060039795
2006-02-23

Fluid-working machine and operating method

#73
18130119
2024-05-28

Electro-magnetic throttle valve with integrated blowdown conduit