Patents
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)
08/1999
08/10/1999US5935099 Drug pump systems and methods
08/10/1999US5934880 Fluid pressure source apparatus for providing adequate accumulator pressure during pressure failure
08/10/1999US5934879 Pump torque control system
08/10/1999US5934093 Servo device for regulating a refrigerant into a compressor
08/10/1999CA2115824C Pump for use in medical technology
08/05/1999WO1999039104A1 Variable displacement compressor
08/05/1999WO1999009319A9 Two stage reciprocating compressors and associated hvac systems and methods
08/05/1999DE19901442A1 Action detection device for operating valve for hydraulic machinery
08/04/1999EP0933604A2 Compressor control system for air conditioner
08/03/1999US5932987 Variable step rate precision pumping apparatus
08/03/1999US5932095 Multi-chambered supercritical fluid extraction cartridge
08/03/1999US5931647 For pumping fluids from a fluid source to a fluid sink
08/03/1999US5931644 Precision demand axial piston pump with spring bias means for reducing cavitation
08/03/1999US5931008 Protecting device for car air conditioner
08/03/1999US5930996 Auto-acceleration system for prime mover of hydraulic construction machine and control system for prime mover and hydraulic pump
07/1999
07/29/1999WO1999037920A2 Variable capacity compressor having adjustable crankpin throw structure
07/29/1999DE19903161A1 Pressure regulation valve for high-pressure jet washer
07/29/1999DE19801355A1 High pressure pump for supplying fuel to common rail injection systems of IC engines
07/28/1999EP0931680A2 Procedure and device for monitoring the functioning of a compressor
07/28/1999EP0782671B1 Device for the controlled driving of at least one hydraulic shaft
07/28/1999CN1224124A Displacement control and stroke control for hydraulic unit
07/27/1999US5927955 Sump pump container and method
07/27/1999US5927950 Device for controlling the supply of water (or other liquid) by a pump and for protecting the same in the event of dry running
07/27/1999US5927073 Electric hydraulic hybrid motor
07/27/1999US5927072 Load sense hydraulic system
07/22/1999DE19902107A1 Displacement control device for a hydraulic unit such as a hydrostatic transmission of skid-steer loader
07/22/1999DE19901964A1 Valve group for water jet cleaner preventing unstable operation
07/21/1999EP0929745A1 Integrated controller pump
07/21/1999CN2329792Y Rod-type pump under-well non-pressing well device
07/20/1999US5925825 For use in a liquid pumping system
07/20/1999US5924975 Linear pump
07/20/1999CA2161504C Method and apparatus for slowing back spin of a rod string of a progressing cavity pump powered by an electric motor when power is lost
07/20/1999CA2031566C Liquid additive metering
07/14/1999EP0929019A1 System for providing pressure regulation in an enclosure under suction from a vacuum pump
07/14/1999EP0928898A2 Control valve for variable displacement compressors
07/14/1999CN1222863A Intracardiac blood pump
07/14/1999CN1222648A Compressor driving apparatus
07/13/1999US5921342 Power assisted steering apparatus for automotive vehicle
07/13/1999US5921274 Internal relief and bypass valve for pumps and piping systems
07/08/1999DE19847917A1 Piston for pump or compressor with adjustable delivery volume
07/06/1999US5918573 Energy efficient fluid pump
07/01/1999DE19757833A1 Adjusting suction speed for automatic liquid sample taking units using suction delivery
06/1999
06/30/1999EP0925081A1 Intracardiac pump device
06/30/1999EP0925080A1 Intracardiac blood pump
06/30/1999CN2326752Y Over-pressure protection device for water-pump
06/30/1999CN1221470A Pump-off controller
06/29/1999US5916165 Pneumatic controller and method
06/29/1999US5915932 Peristaltic pump having a roller support
06/29/1999US5915929 Low power electromagnetic pump
06/29/1999US5915925 Pulseless liquid supply system for flow cytometry
06/24/1999DE19757069A1 Boiler flue gas condensate level evaluation method
06/23/1999EP0924586A1 Regulation of fluid conditioning stations
06/23/1999EP0924438A2 Combined valve assembly
06/23/1999EP0924433A1 Scroll-type compressor
06/23/1999EP0924427A1 Power control valve
06/23/1999EP0715704B1 Pump arrangement for an oil burner
06/23/1999CN2325698Y Variable frequency air flow adjusting device
06/23/1999CN2325557Y Device for controlling oil well pump intermittent working
06/23/1999CN1220633A Pneumatic suspension
06/23/1999CN1220347A Scroll-type compressor and operation method therefor
06/23/1999CN1220344A Variable displacement type compressor
06/22/1999US5913664 Safety relief valve assembly for a fluid displacement apparatus
06/22/1999US5913663 Device for regulating the total power of at least two variable displacement hydrostatic pumps
06/16/1999EP0922813A2 hydraulic drive system for hydraulic work vehicle
06/16/1999EP0922162A1 Travelling thick matter pump
06/16/1999EP0636203B1 Variable displacement pump
06/15/1999US5911881 Biasing device that guides file into restrictor
06/15/1999US5911562 High pressure fluid delivery system with automatic priming valve
06/15/1999CA2086423C Radial piston fluid machine and/or adjustable rotor
06/10/1999WO1999029035A1 Method for controlling turn-on/off of motor preheater and motor preheater
06/10/1999WO1999028627A1 Variable capacity swash plate type clutchless compressor
06/10/1999WO1999028620A1 Quick-start of a high pressure pump by means of a pressure intensifier piston
06/10/1999WO1999009319A8 Two stage reciprocating compressors and associated hvac systems and methods
06/10/1999DE19754277A1 Hydraulic drive unit e.g. pressure converter
06/09/1999EP0921311A2 Cryopump
06/09/1999CN2323172Y Automatic pressure controlling device for high pressure pump
06/08/1999US5911127 Prediction of chiller compressor motor overheating
06/03/1999WO1999014498A3 Temperature control system in a high pressure pump for failure detection of valves and plunger seal
06/02/1999EP0919722A2 Regeneration of a cryopump
06/02/1999EP0919721A2 Thermal overload control of a variable displacement compressor
06/02/1999EP0919720A2 Control valve for variable capacity compressors
06/02/1999EP0918675A1 Energy supply for a compressed air braking system, in particular for utility vehicles
06/02/1999EP0918597A1 Pumping unit with speed transducer
06/02/1999DE19753155A1 Kraftstoffversorgungssystem für eine Brennkraftmaschine und darin verwendete Hochdruckpumpe Fuel supply system for an internal combustion engine and used therein high-pressure pump
06/01/1999US5909352 Alternator circuit for use in a liquid level control system
06/01/1999US5907951 Hydraulic control system for construction machine
05/1999
05/27/1999WO1999025977A1 Variable displacement swash plate type clutchless compressor
05/26/1999EP0918159A2 Cryopump
05/26/1999EP0760059A4 Low power electromagnetic pump
05/20/1999WO1999024094A1 Pneumatic controller and method
05/19/1999EP0916026A1 Process for regulating a unit or a frequency converter
05/19/1999EP0808421B1 Adjustable hydrostatic pump
05/18/1999US5905355 Pump-motor apparatus
05/18/1999US5904126 Pump control system
05/18/1999US5904050 Motor vehicle air conditioning control system
05/14/1999WO1999023387A1 Piston pump
05/14/1999WO1999023386A1 Peristaltic pump controller with nonlinear pump calibration coefficient
05/14/1999WO1999022783A1 Portable peristaltic pump for peritoneal dialysis
05/14/1999CA2306230A1 Peristaltic pump controller with nonlinear pump calibration coefficient
05/12/1999EP0915256A2 Apparatus for controlling the starting and stopping of a hydraulic pump