| 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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| 12/23/1999 | WO1999066374A1 Electronic control system for installations which generate compressed air or vaccuums |
| 12/23/1999 | WO1999066205A1 Air conditioner |
| 12/23/1999 | WO1999066203A1 Variable displacement swash plate type clutchless compressor |
| 12/23/1999 | DE19924485A1 Electromagnetic pump unit with pump and valve for supplying actuator with fluid pressure |
| 12/23/1999 | DE19826292A1 Verfahren zum Betreiben einer Pumpe zur Förderung siedender Kältemittel oder Kälteträger Method for operating a pump to deliver boiling refrigerant or refrigerant |
| 12/22/1999 | EP0794851A4 Motor driven hydraulic tool |
| 12/22/1999 | EP0757757B1 Single-piston, multi-mode fluid displacement pump |
| 12/22/1999 | CN2355131Y Two functional valve for unkilling well of oil suction well |
| 12/21/1999 | US6004110 Displacement pump |
| 12/21/1999 | US6004109 Apparatus for the rapid evacuation of a vacuum chamber |
| 12/21/1999 | US6004103 Air compressor system |
| 12/16/1999 | DE19826291A1 Verfahren zum Betreiben einer Pumpe zur Förderung siedender Kältemittel oder Kälteträger Method for operating a pump to deliver boiling refrigerant or refrigerant |
| 12/16/1999 | DE19826169A1 Elektronische Steuerung für Anlagen der Druckluft- und Vakuumerzeugung Electronic control systems for the compressed air or vacuum |
| 12/15/1999 | EP0964158A2 Pump operating process for boiling refrigerants or coolants |
| 12/15/1999 | EP0964157A1 Well pump with integrated pressure switch |
| 12/15/1999 | EP0964156A2 Pump operating process for boiling refrigerants or coolants |
| 12/15/1999 | CN2353930Y Four-liquid clutching speed-adjustable high-pressure mud injecting pump |
| 12/14/1999 | US6000914 Rotary vane cell pump having a frustrum orifice |
| 12/09/1999 | WO1999063225A1 Pressurised water supply systems |
| 12/09/1999 | DE19839579C1 Two=stage filtering system for fuel supply to injectors |
| 12/09/1999 | DE19834116C1 Hydraulic conveyor servo control flow regulation valve |
| 12/09/1999 | DE19830416C1 Pump with float-actuated automatic cut-off, esp. for removing water from cellars, etc. |
| 12/08/1999 | EP0962847A1 Method and equipment for controlling a pipe network |
| 12/08/1999 | EP0962658A2 Reverse rotation detection for compressors |
| 12/08/1999 | EP0962657A2 Scroll compressor having suction control valve |
| 12/08/1999 | CN2352727Y Apparatus for controlling water pump |
| 12/08/1999 | CN2352722Y Same direction circulation, chain driven and no-load protective type oil pumping machine |
| 12/08/1999 | CN1237694A Variable displacement type refrigerant compressor and method of assebmbling the same |
| 12/07/1999 | US5997205 Coating roller and coating apparatus |
| 12/07/1999 | US5996701 Control method and system for construction machine |
| 12/07/1999 | US5996422 Buck air sampling pump flow control algorithm |
| 12/07/1999 | US5996367 Heat pump and air conditioning system compressor unloading method and apparatus |
| 12/07/1999 | CA2167135C Control for a variable displacement axial piston pump |
| 12/02/1999 | WO1999061964A1 Method for calibrating the speed of an electric pump-drive motor |
| 12/02/1999 | WO1999061797A1 Device for adjusting hydraulic equipment |
| 12/02/1999 | WO1999061796A1 Hydraulic system having a variable delivery pump |
| 12/02/1999 | WO1999061795A1 Regulation of the stroke frequency of a dosing pump |
| 12/02/1999 | WO1999051882A9 Diaphragm pump and pump for double-breast pumping |
| 12/02/1999 | DE19823156A1 Dosierpumpe Metering pump |
| 12/01/1999 | EP0961395A2 Automatic restart control for a submersible pump |
| 12/01/1999 | EP0961031A2 Regulating valve for variable displacement swash plate compressor and its assembly method |
| 12/01/1999 | CN1237229A Torque control device for hydraulic pump of hydraulic construction equipment |
| 11/30/1999 | US5993177 Scroll type compressor with improved variable displacement mechanism |
| 11/30/1999 | US5993171 Scroll-type compressor with variable displacement mechanism |
| 11/30/1999 | US5993168 Settable choke device to control the power setting of a variable displacement hyraulic pump |
| 11/30/1999 | US5992590 Hydraulic actuation system |
| 11/30/1999 | US5992450 Cartridge valve having solenoid bypass and integral relief valve |
| 11/30/1999 | CA2091707C Eddy current drive and motor control system for oil well pumping |
| 11/25/1999 | WO1999060273A1 A digital pump |
| 11/25/1999 | WO1999060272A1 Device and method for evacuation |
| 11/25/1999 | DE19919160A1 Marginal pressure controls for contractors plant |
| 11/25/1999 | DE19838947C1 By-pass vlave for high pressure washer |
| 11/24/1999 | EP0958453A1 Piston pump |
| 11/24/1999 | CN2350562Y Full-automatic controller for water pump |
| 11/23/1999 | US5988994 Angularly oscillating, variable displacement compressor |
| 11/23/1999 | US5988989 Compact hydraulic power unit having a reservoir closed by a manifold having a hydraulic circuit |
| 11/23/1999 | US5988988 Capacity control valve device for variable capacity swash plate compressors |
| 11/23/1999 | US5988986 Method and device for monitoring system units based on transmission of lumped characteristic numbers |
| 11/23/1999 | US5988984 Method and apparatus for liquid control system having a valve with a notch in the seal for enabling a sufficient fluid to pass through when the seal is fully closed to cool the pump and/or motor |
| 11/18/1999 | WO1999058856A1 Control system for multi-pump operation |
| 11/18/1999 | DE19919104A1 Compressor with variable output for cooling or coolant cycle for motor vehicle improves the fuel efficiency of the vehicle engine and can be produced at relatively low cost |
| 11/18/1999 | DE19819960A1 Axialkolbenpumpe mit integriertem Schwenkwegmeßsystem Axial piston pump with integrated Schwenkwegmeßsystem |
| 11/17/1999 | EP0956446A1 Dosing pump and method for enhancing dosing precision |
| 11/17/1999 | CN2349381Y Electric water pump with tower or well water level automatic controller |
| 11/17/1999 | CN1235657A Fuel injection pump with integrated solenoid control valve for by-pass |
| 11/16/1999 | US5984646 Hydraulic motor for use with airless paint sprayer system |
| 11/16/1999 | US5984641 Controller for oil wells using a heated probe sensor |
| 11/16/1999 | US5984315 Reclamation system for a hydraulic pump system |
| 11/16/1999 | US5984013 Plunger arrival target time adjustment method using both A and B valve open times |
| 11/16/1999 | US5983780 Multiple piston swash plate type of compressor including different dead volumes of the cylinder bores by the use of different length pistons |
| 11/11/1999 | WO1999057434A1 Hydraulically-actuated system having a variable delivery fixed displacement pump |
| 11/10/1999 | EP0955465A2 Axial piston pump with integrated system for measuring angular displacement |
| 11/10/1999 | EP0954704A1 Flow control valve |
| 11/10/1999 | EP0954703A1 Power- and moment-regulating system for a plurality of hydraulic pumps |
| 11/09/1999 | US5983151 Tractive force control apparatus and method for construction equipment |
| 11/09/1999 | US5980219 Piston-type compressor, especially for generating compressed air in motor vehicles |
| 11/09/1999 | US5980215 Adjustable hydrostatic pump with additional pressure change control unit |
| 11/09/1999 | US5980211 Circuit arrangement for driving a reciprocating piston in a cylinder of a linear compressor for generating compressed gas with a linear motor |
| 11/09/1999 | US5980210 Diaphragm-type pressurizing pump having a water stopper structure |
| 11/09/1999 | US5979788 Pressure washer valve assembly |
| 11/09/1999 | US5979168 Single-source gas actuation for screw compressor slide valve assembly |
| 11/04/1999 | WO1999055566A1 Method and device for controlling a pump of a brake system |
| 11/04/1999 | WO1999055468A2 Dosing dispenser |
| 11/04/1999 | DE19843168C1 Pumping installation for automatic emptying of fluid transport container |
| 11/04/1999 | DE19830302A1 Externally supported radial piston pump for fuel injection system |
| 11/04/1999 | DE19818174A1 Verfahren und Vorrichtung zur Steuerung einer Pumpe eines Bremssystems Method and apparatus for controlling a pump of a brake system |
| 11/03/1999 | EP0953766A2 Control valve |
| 11/03/1999 | EP0953765A2 Variable displacement type swash plate compressor and displacement control valve |
| 11/03/1999 | EP0720789B1 Driving circuit with several sensors |
| 11/02/1999 | US5975858 Hydraulic drive unit of a press machine and swash plate type variable capacity axial piston pump to use for said device |
| 11/02/1999 | US5975857 Process for operating a dry-compression vacuum pump as well as a suitable vacuum pump for implementation of this process |
| 10/28/1999 | DE19816241C1 Suction pressure regulation method for membrane or piston pump |
| 10/27/1999 | EP0952349A2 Electric pump control for a continuously variable transmission |
| 10/27/1999 | EP0952347A1 Piston stroke control circuit for an oscillating compressor |
| 10/27/1999 | EP0952345A2 Control valve for variable displacement compressors and method for varying displacement |
| 10/27/1999 | EP0952344A2 Flow control valve for a variable displacement refrigerant compressor |
| 10/27/1999 | EP0846007A4 Diaphragm pump and pump mounted in a carrying case useful in breast pumping |
| 10/27/1999 | CN2345732Y Intelligence automatic interpumping control instrument |
| 10/27/1999 | CN1232926A Improved structure of linear compressor |
| 10/26/1999 | US5973465 Automotive restart control for submersible pump |