ClassID:

143141

F04B49/16 - 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 adjusting the capacity of dead spaces of working chambers

Recent Application in this class:
#1
20260126038
2026-05-07

CONNECTOR STRUCTURE OF STEPLESS CAPACITY CONTROL ACTUATOR OF RECIPROCATING COMPRESSOR

#2
20260071618
2026-03-12

COMPRESSOR SYSTEMS FOR PUNCTURE REPAIR KITS

#3
20250207569
2025-06-26

ROTARY SWASH PLATE HYDRAULIC PUMP

#4
20240392775
2024-11-28

DIRECT CONTROLLED VARIABLE DISPLACEMENT PUMPS WITH THERMOSTATICALLY CONTROLLED BYPASS

#5
20240392772
2024-11-28

PRESSURE SENSITIVE STOP STROKE FOR VARIABLE DISPLACEMENT PUMPS

#6
20240376657
2024-11-14

DETERGENT SUPPLY APPARATUS OR WASHING MACHINE COMPRISING SAME

#7
20240200542
2024-06-20

Conveying Device

#8
20240052827
2024-02-15

METHOD AND SYSTEM FOR LOAD CONTROL OF RECIPROCATING COMPRESSORS

#9
20230416072
2023-12-28

OSCILLATING ARMATURE PUMP

#10
20220372967
2022-11-24

On-demand dual variable displacement positive displacement pumping system

#11
20210310467
2021-10-07

POSITIVE-DISPLACEMENT PUMP AND PUMPING GROUP FOR FLUID PRODUCTS AND METHOD FOR THE USE THEREOF

#12
20210164458
2021-06-03

PUMP DRIVE THAT MINIMIZES A PULSE WIDTH BASED ON VOLTAGE DATA TO IMPROVE INTAKE AND DISCHARGE STROKES

#13
20200309116
2020-10-01

Method for operating a piston compressor, and piston compressor

#14
20200182237
2020-06-11

Pump for a selective catalytic reduction (SCR) system in vehicles comprising at least one pump element comprising a pump piston, a spring bellow, and an actuation tappet under force of a compression spring surrounding the spring bellow

#15
20190271304
2019-09-05

Method and system for gas compressor control

#16
20190136853
2019-05-09

Precision Fluid Dispensing Using Peristaltic Roller Control

#17
20190078565
2019-03-14

Pump drive that minimizes a pulse width based on voltage data to improve intake and discharge strokes

#18
20190040855
2019-02-07

Compressor having an energy saving apparatus, and method for relieving the compressor

#19
20180372087
2018-12-27

Piston Compressor Having a Venting Device

#20
20180202431
2018-07-19

Two-stage reciprocating compressor optimization control system

#21
20180187674
2018-07-05

Method for operating a linear compressor

#22
20180010543
2018-01-11

Direct-injection, supercharged internal combustion engine with high-pressure fuel pump, and method for operating an internal combustion engine of said type

#23
20170248129
2017-08-31

Positive-displacement pump and pumping group for fluid products and method for the use thereof

#24
20170087783
2017-03-30

Device for sealing and inflating inflatable objects

#25
20170072648
2017-03-16

Device for sealing and inflating inflatable objects

#26
20160298621
2016-10-13

Pump for a selective catalytic reduction (SCR) system in vehicles comprising at least one pump element comprising a pump piston, a spring bellow, and an actuation tappet under force of a compression spring surrounding the spring bellow

#27
20160177938
2016-06-23

Method of control of compressors with more than two capacity states

#28
20160032917
2016-02-04

Device for conserving power in a piston compressor

#29
20150110657
2015-04-23

Adjusting device for an adjusting piston of a variable clearance space of a reciprocating compressor

#30
20140377081
2014-12-25

Reciprocating compressors having timing valves and related methods

#31
20140338526
2014-11-20

Variable-volume head

#32
20140050597
2014-02-20

Pump unit for a high-pressure pump

#33
20130343915
2013-12-26

Variable radial fluid device with counteracting cams

#34
20130205769
2013-08-15

Wave energy conversion

#35
20120137667
2012-06-07

Regenerative hydraulic pump

#36
20110277625
2011-11-17

Piston air compressor

#37
20110070102
2011-03-24

Compressor system and method for the operation of a compressor system

#38
20110058968
2011-03-10

Reciprocating compressor

#39
20110020144
2011-01-27

VARIABLE-VOLUME HEAD

#40
20100293938
2010-11-25

Hydraulic fluid pump of a vehicle brake system having a delivery means

#41
20100269799
2010-10-28

Supercharged compressor and method for controlling a supercharged compressor

#42
20100199837
2010-08-12

Variable length bent-axis pump/motor

#43
20100040484
2010-02-18

Variable volume clearance pocket for a reciprocating compressor cylinder

#44
20100034705
2010-02-11

Negative dead volume syringe

#45
20080247844
2008-10-09

Robot hand and method for automatically placing an element

#46
20080199327
2008-08-21

Apparatus and Method For Compressing a Gas

#47
20080080995
2008-04-03

RECIPROCATING COMPRESSOR

#48
20070286740
2007-12-13

Hydraulic unit and method for providing a pressurized hydraulic fluid

#49
20070189911
2007-08-16

Liquid pump

#50
20050254979
2005-11-17

Variable output control for a fixed displacement pump

#51
20050120730
2005-06-09

Heat pump water heating system including a compressor having a variable clearance volume