| Patents for F04B 49 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups (22,036) |
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| 05/23/2000 | US6065946 Integrated controller pump |
| 05/18/2000 | DE19852389A1 Kolbenbrennkraftmaschine mit drosselfreier Laststeuerung und Einrichtung zur Erzeugung eines Unterdrucks Piston-type internal combustion engine with a throttle-free load control and means for generating a negative pressure |
| 05/17/2000 | EP1001171A2 Variable displacement compressor |
| 05/17/2000 | EP1000245A1 Hydraulic system having a variable delivery pump |
| 05/17/2000 | CN2378551Y Offset regulator for rope suspension device of exhauster for removing cooking fumes |
| 05/17/2000 | CN1253238A Installation and method for controlling linear compressor |
| 05/17/2000 | CN1253237A Piezoelectric ceramic pump |
| 05/16/2000 | US6062824 Control valve |
| 05/16/2000 | US6062823 Control valve in variable displacement compressor |
| 05/16/2000 | US6062822 High-pressure cleaning apparatus |
| 05/11/2000 | WO2000026537A1 Detecting obstructions in enteral/parenteral feeding tubes and automatic removal of clogs therefrom |
| 05/11/2000 | DE19850611C1 Adjustable hydraulic machine such as pump or motor has control valve of displacement device connected solenoid valve to return to neutral displacement position in event of fault |
| 05/10/2000 | EP0999114A2 Power steering apparatus |
| 05/09/2000 | US6059754 Pulsed lavage pump with integral power source and variable flow control |
| 05/09/2000 | US6059538 Control valve for variable displacement compressor |
| 05/09/2000 | US6059536 Emergency shutdown system for a water-circulating pump |
| 05/09/2000 | US6058593 Method for producing a micro motor |
| 05/04/2000 | WO2000025416A1 Pressure control system using input current sensing |
| 05/04/2000 | WO2000025070A1 Air conditioner outdoor unit drive control unit |
| 05/04/2000 | DE19945349A1 Preventing droplet dripping from discharge of electric valve for semiconductor wafer coating with liq. |
| 05/04/2000 | DE19850269A1 Gas compressor for compressed air-controlled road vehicle brake installation can be changed between load and no-load running and has compression chamber with suction connected to it via valve |
| 05/03/2000 | EP0997642A1 Control circuit for an electromagnetic coil with duty ratio adjustment for compensating power source voltage fluctuations |
| 05/03/2000 | EP0997639A2 Variable displacement compressor |
| 05/03/2000 | EP0997584A2 Engine speed control system for construction machine |
| 05/03/2000 | EP0996877A1 An apparatus and method for regulating a pressure in a chamber |
| 05/03/2000 | EP0996824A1 Single-source gas actuation for screw compressor slide valve assembly |
| 05/03/2000 | EP0876273B1 Brake pressure control devices |
| 05/03/2000 | EP0846229B1 Fuel supply pump for a fuel injection pump for internal combustion engines |
| 05/02/2000 | US6056516 Compressor installation having a control valve arrangement for independently switching compression chambers between delivery partial delivery and idle operation |
| 05/02/2000 | US6056513 Variable displacement compressor and method for controlling the same |
| 05/02/2000 | US6056510 Multistage vacuum pump unit |
| 05/02/2000 | US6055851 Apparatus for diagnosing failure of hydraulic pump for work machine |
| 05/02/2000 | CA2047230C Peristaltic pump motor drive |
| 04/27/2000 | DE19848217A1 Gas compressor has additional compression chambers and throttle pipes to bypass closure valves when idling, to lower self-stabilizing idling pressure |
| 04/25/2000 | US6053711 Pump for pressurizing control system |
| 04/25/2000 | US6053707 Control device for slanting plate type variable capacity pump |
| 04/25/2000 | US6053703 Control method for displacement-type fluid machine, and apparatus thereof |
| 04/25/2000 | US6053361 Out-of-fluid detector for reciprocating pumps |
| 04/25/2000 | US6053196 Flow regulator |
| 04/20/2000 | WO2000022298A2 Stroke control of a reciprocating pump |
| 04/20/2000 | DE19945323A1 Fuel cell system has gas compressor connected to air feed line from compressor to fuel cell, recovery unit in waste gas line, liquid-gas separator unit, water feed line and pressure feed device |
| 04/20/2000 | DE19838812C1 Verfahren und Vorrichtung zum Einstellen eines Druckes zwischen einer Vorförderpumpe und einer Hochdruckpumpe eines Einspritzsystems Method and apparatus for adjusting a pressure between a prefeed pump and a high pressure pump of an injection system |
| 04/19/2000 | EP0994255A1 High pressure fuel pumping apparatus |
| 04/19/2000 | EP0993330A1 Active pump phasing to enhance chromatographic reproducibility |
| 04/19/2000 | CN1250847A Fittings for hydraulic operation |
| 04/18/2000 | US6050918 Controller and control method of electric pump feedback controlled as a function of drain flow rate for a continuously variable transmission |
| 04/18/2000 | US6050780 Method for driving a high speed compressor |
| 04/18/2000 | US6050779 Conveying apparatus using unstable electric power supply |
| 04/13/2000 | WO2000020760A1 Rotary pump |
| 04/13/2000 | WO2000020753A1 Pump arrangement for providing fuel at high pressure |
| 04/13/2000 | WO2000020738A2 Gas turbine engine |
| 04/13/2000 | DE19847949A1 Driving hydraulic pump involves determining motor current torque reserve from torque-speed characteristic, driving motor according to maximum torque, envisaged hydraulic circuit load |
| 04/13/2000 | DE19846157A1 Pumpenanordnung zur Kraftstoffhochdruckerzeugung Pump assembly for high-pressure fuel production |
| 04/13/2000 | CA2345312A1 Gas turbine engine |
| 04/12/2000 | EP0992734A2 Compression of liquids and gas supply apparatus |
| 04/12/2000 | EP0992635A1 Equipment for suction and high pressure cleaning optimised by a logic unit |
| 04/12/2000 | EP0991865A1 Multiple pump control arrangement |
| 04/12/2000 | CN1051358C Process for regulating the capacity of lubricant pumps and lubricant pump therefor |
| 04/11/2000 | US6048179 Module with an electric generator and a pump unit |
| 04/11/2000 | US6048177 Output regulation with load sensing |
| 04/11/2000 | US6048176 Regulating device for a hydrostatic positive displacement unit |
| 04/11/2000 | US6047557 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 04/06/2000 | WO2000019103A1 Lift valve for a rotary screw compressor |
| 04/06/2000 | WO2000019101A1 Control system and method for air compressor |
| 04/06/2000 | WO2000019096A1 Pneumatic compressor system |
| 04/06/2000 | DE19937109A1 Druckbetätigtes Durchflußregelventil und Kältemittelverdichter in Verbindung mit dem Durchflußregelventil Pressure-operated flow control valve and refrigerant compressors in conjunction with the flow control valve |
| 04/06/2000 | DE19844001A1 Hydraulically actuated armature for valves, flaps in aircraft, ships, plant has variable delivery pump with control input for hydraulic signal connected to control motor pressure port |
| 04/06/2000 | DE19844000A1 Electro-hydraulic activation arrangement, has timer which interrupts power supply of pump motor if pressure reaches predetermined range |
| 04/05/2000 | EP0990796A2 Assembly of a mechanical or hydraulic drive and a piston pump |
| 04/05/2000 | EP0990795A2 Variable displacement compressor |
| 04/05/2000 | CN1249214A Method and system for preventing incontinent drop |
| 04/04/2000 | US6045529 Drive unit for a breastpump |
| 04/04/2000 | US6045337 Clutchless variable capacity swash plate compressor |
| 04/04/2000 | US6045332 Control system for multi-pump operation |
| 03/30/2000 | WO2000017516A1 Fuel injection system |
| 03/30/2000 | DE19843940A1 Kraftstoffeinspritzsystem The fuel injection system |
| 03/29/2000 | EP0989305A1 Pumping unit for the automatic unloading of fluid transport containers |
| 03/29/2000 | EP0988452A1 Actuator valve for pressure switch for a hydraulic system |
| 03/29/2000 | EP0988451A1 Temperature compensation system for regulating flow through tubing in a pump |
| 03/29/2000 | EP0840852A4 Fluid pumping apparatus |
| 03/28/2000 | US6042344 Control of scroll compressor at shutdown to prevent unpowered reverse rotation |
| 03/23/2000 | WO2000016464A2 Control system with integrated actuation package |
| 03/23/2000 | WO2000015990A1 Bellows type pressure responding valve |
| 03/23/2000 | DE19942867A1 Process for pumping fluid at a constant flow in a hydraulic system uses two out of phase alternating pump units |
| 03/22/2000 | EP0987440A1 Capacity control scroll compressor |
| 03/22/2000 | EP0986709A1 Linear peristaltic pump |
| 03/22/2000 | EP0811123B1 Gas actuated slide valve in a screw compressor |
| 03/21/2000 | US6039543 Pump shut off system |
| 03/21/2000 | US6038871 Dual mode control of a variable displacement refrigerant compressor |
| 03/21/2000 | CA2133616C Method and apparatus for controlling hydraulic systems of construction equipment |
| 03/16/2000 | DE19942466A1 Adjustable displacement pump comprises pump body with inner chamber and suction and delivery paths connected to inner chamber, together with cam ring |
| 03/16/2000 | DE19927792A1 Oil pump for servo steering system on road vehicle incorporates rotor, cam ring, pump chamber and pressure plate arranged at least on one side of rotor and cam ring |
| 03/16/2000 | DE19849785C1 Method and device for adjusting feed in oscillating positive-displacement pumps driven by means of driving motor using a rotating shaft and a driving mechanism such as crank gearing, gives versatility in operation |
| 03/15/2000 | EP0985823A2 Control valve for a variable displacement compressor |
| 03/15/2000 | EP0985097A1 Hydraulic system with a hydromotor fed by a hydraulic transformer |
| 03/15/2000 | EP0985087A1 Hydraulic drive system with constant pressure in pressure conduit |
| 03/15/2000 | EP0984803A2 Volumetric pump with sterility seal |
| 03/15/2000 | CN2369005Y Automatic regulator for range of metering pump |
| 03/15/2000 | CN1247280A Engine speed control system for building machinery |
| 03/15/2000 | CN1247276A Capacity variable compressor and control valve used for same |