| 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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| 01/02/2002 | EP1167759A1 Variable displacement compressor |
| 01/02/2002 | EP1165964A2 Load sharing valve and system for operating centrifugal pumps in parallel |
| 01/02/2002 | EP1165943A1 Device and method for controlling a piston engine |
| 01/02/2002 | CN2469210Y Means for reducing load, silencing and filtering for compressor |
| 01/02/2002 | CN2469209Y Electric braking apparatus for oil pumping machine |
| 01/02/2002 | CN1077235C Displacement controlling structure for clutchless variable displacement compressor |
| 01/01/2002 | US6334759 Control valve for variable displacement compressor |
| 01/01/2002 | US6334458 By-pass valve in particular for pressure-washing machines |
| 12/27/2001 | US20010055531 Control valve for variable displacement compressor |
| 12/26/2001 | CN1328617A Turbomachine |
| 12/26/2001 | CN1328213A Protector for closed compressor and closed compressor using the same |
| 12/25/2001 | US6332757 Control valve for variable displacement compressor |
| 12/25/2001 | US6332463 Flow estimation and compensation of flow-induced pressure swings in CPAP treatment and assisted respiration |
| 12/25/2001 | US6332329 Swash plate type variable displacement compressor |
| 12/25/2001 | CA2231643C Reciprocating piston pump with bleed passages |
| 12/20/2001 | WO2001096744A1 Temperature control with constant cooling flow and temperature for vacuum generating device |
| 12/20/2001 | US20010052236 Air conditioner and displacement control valve for variable displacement compressor |
| 12/20/2001 | DE10121674A1 Radial piston pump has a link through a throttle between the piston compression zones and a zone with lower pressure levels to reduce pressure gradients for lower noise emissions |
| 12/20/2001 | DE10029420A1 Device for feeding fluid to pump has different degrees of alignment between openings during distribution element sleeve rotation depending on sleeve's longitudinal position |
| 12/20/2001 | DE10029080A1 Motor drive velocity modulation for use in reciprocating pump, involves starting timer and detecting overflow, to increment lookup table and motor driving speed, to enable constant pressure and flow of liquid |
| 12/19/2001 | EP1164322A2 Pressure safety block with vibration damper for high pressure cleaning apparatus |
| 12/19/2001 | EP1164282A2 Stand alone multi stage fuel pump |
| 12/19/2001 | CN2466346Y Rear horse-head antifatigue device for special shaped beam pumping unit |
| 12/19/2001 | CN1327126A Rotary compressor and its operation control method |
| 12/19/2001 | CN1076445C Inverter-controlled sealed compressor |
| 12/18/2001 | US6331925 Two stage reciprocating compressors and associated HVAC systems and methods |
| 12/13/2001 | WO2001095048A1 Fluid control apparatus and method |
| 12/13/2001 | WO2001094786A1 Submersible electrolyte circulation system |
| 12/13/2001 | US20010049942 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 12/13/2001 | DE10047940A1 Screw air compressor has a frequency controlled drive motor protected from overload by a valve venting to the atmosphere. |
| 12/13/2001 | DE10023523C1 Run-up control for membrane and/or piston vacuum pump uses short-term reversal of pump when initial maximum torque in forwards rotation direction is not overcome |
| 12/13/2001 | CA2412135A1 Fluid control apparatus and method |
| 12/13/2001 | CA2350297A1 Stand alone multi stage fuel pump |
| 12/12/2001 | EP1162382A2 Gas compressor and air conditioning system |
| 12/12/2001 | EP1162372A1 Liquid pressurizing device |
| 12/12/2001 | EP1162370A2 A capacity control device for a compressor in a refrigerating system |
| 12/12/2001 | EP1162365A1 High-pressure fuel feed pump of internal combustion engine |
| 12/12/2001 | EP0708666B1 Instantaneous volume measurement system and method for non-invasively measuring liquid parameters |
| 12/11/2001 | US6328542 Check valve system |
| 12/11/2001 | US6328535 Flow control valve capable of adjusting fluid flow characteristics in accordance with a position of a valve element in a bore |
| 12/06/2001 | WO2001092709A2 Pump assembly and method |
| 12/06/2001 | US20010049318 Displacement control device for hydraulic pump and brake control device for hydraulic motor |
| 12/06/2001 | US20010048285 Protective device for a hermetically sealed type compressor and a hermetically sealed compressor using same |
| 12/06/2001 | US20010048091 Electromagnetic valve |
| 12/06/2001 | DE10027407A1 Control of a pump for thick material, such as concrete, where the pump has two cylinder units operating reciprocally and has a controller that operates with piston position sensors to precisely control the speed of the pistons |
| 12/06/2001 | DE10027138A1 Electrohydraulic control device e.g. for piston engine has pressure-medium channels connected to each other via openings in disk of rotary valve |
| 12/06/2001 | DE10016040C1 Hydraulic power coupling device e.g. for tractor tool, has safety valve inserted in pump line operated by pressure in tank line |
| 12/05/2001 | EP1160450A2 System for controlling pump operation |
| 12/05/2001 | CN2463564Y Locking wrist pin for beam-pumping unit |
| 12/05/2001 | CN2463563Y Coin-box automatic inflator for tyre |
| 12/05/2001 | CN1325166A Sealed compressor with temp. feed-back provided to motor protector |
| 12/04/2001 | US6325093 Water distributing installation controllers |
| 12/04/2001 | US6324841 Power- and moment-regulating system for a plurality of hydraulic pumps |
| 12/04/2001 | CA2183303C Pump protection system with an interstage liquid/gas phase detector |
| 11/29/2001 | WO2001090618A1 Unloading valve |
| 11/29/2001 | US20010045097 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 11/28/2001 | EP1158641A2 Sealed compressor with temperature feedback to motor protector unit |
| 11/28/2001 | EP1157212A2 Pump drive decoupler |
| 11/28/2001 | CN1324443A Drive control unit for outdoor unit of air conditioner |
| 11/27/2001 | US6321563 Motor-driven compressor |
| 11/27/2001 | US6321545 Control apparatus for variable displacement type compressor |
| 11/27/2001 | US6321543 Method for protecting compressors used in chillers and/or heat pumps |
| 11/22/2001 | WO2001088372A1 Control valve for variable displacement compressor |
| 11/22/2001 | US20010043875 Pulsation damping device |
| 11/22/2001 | US20010042849 Silting prevention controller |
| 11/21/2001 | EP1156213A1 Compressor unit with regulated cooling fan |
| 11/21/2001 | EP1155887A2 Air conditioner |
| 11/21/2001 | EP0993330A4 Active pump phasing to enhance chromatographic reproducibility |
| 11/21/2001 | EP0900351B1 Fuel injection method for a stepped gas turbine combustion chamber |
| 11/21/2001 | EP0805922B1 Aircraft hydraulic pump control system |
| 11/20/2001 | US6319410 Apparatus and method for super critical fluid extraction |
| 11/20/2001 | US6318971 Variable displacement compressor |
| 11/20/2001 | US6318233 Brake booster apparatus |
| 11/20/2001 | US6318093 Electronically controlled cryopump |
| 11/15/2001 | US20010041143 Valve arrangement and pump for a gear system |
| 11/15/2001 | DE10100991A1 Device for transporting paste-like building materials, e.g. mortar, plaster or screed, has compressed air transport device with variable maximum transport pressure and/or quantity |
| 11/14/2001 | EP1154162A1 Hydraulic pump control device |
| 11/14/2001 | EP1154160A2 Control valve for variable displacement compressor |
| 11/14/2001 | EP1154157A2 Pulsation damping device |
| 11/14/2001 | EP1153215A2 Variable output pump for gasoline direct injection |
| 11/14/2001 | CN2459465Y Crank pin drop-resistant device for oil pumping machine |
| 11/14/2001 | CN1321835A Pneumatic plunger type grouting pump and slurry-dispensing machine and automatic slurry-dispensing grouting equipment |
| 11/13/2001 | US6315523 Electrically isolated pump-off controller |
| 11/08/2001 | WO2001083992A1 Neutral override for servo controlled hydrostatic units |
| 11/08/2001 | US20010038799 Diaphragm pump and pump for double-breast pumping |
| 11/08/2001 | US20010037833 Device for actuating an overflow valve |
| 11/07/2001 | EP1152150A2 Actuator for an overflow valve |
| 11/07/2001 | CN2458438Y Relief valve for electric pump |
| 11/07/2001 | CN1321262A Compressor drive |
| 11/07/2001 | CN1321222A Programmable, fluid pressure actuated blood processing systems and methods |
| 11/07/2001 | CN1321221A Systems and methods for control of pumps |
| 11/07/2001 | CN1321100A Blood processing systems and methods with on-line mixing of replacement fluids |
| 11/07/2001 | CN1321098A Fluid pressure actuated blood pumping systems and methods with continuous inflow and pulsatile outflow conditions |
| 11/07/2001 | CN1321097A Blood processing systems and methods employing fluid pressure actuated pumps and valves |
| 11/06/2001 | US6312227 Infusion device with disposable elements |
| 11/06/2001 | US6311489 Regulating device for an adjustable hydraulic pump with several consumers |
| 11/06/2001 | CA2233850C Protecting device for car air conditioner |
| 11/03/2001 | CA2442624A1 Strain relief for a sump pump alarm |
| 11/03/2001 | CA2440711A1 Enclosure for a sump pump alarm |
| 11/01/2001 | WO2001081770A1 Device for supplying a hydraulic consumer with a pressure medium |