| Patents for F04D 15 - Control, e.g. regulation, of pumps, pumping installations, or systems (4,967) |
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| 11/17/2004 | EP1476207A1 Implantable heart assist system |
| 11/17/2004 | CN2656678Y Automatic constant pressure controller for water pump |
| 11/16/2004 | US6817836 Methods and apparatus for controlling a continuous flow rotary blood pump |
| 11/11/2004 | US20040221879 Motor-integrated pump and washing apparatus using the same |
| 11/11/2004 | DE10331973A1 Umwälzpumpe mit Ventileinrichtung Circulating pump with valve means |
| 11/10/2004 | CN2654909Y Device for draining liquid from negative pressure container by water pump |
| 11/10/2004 | CN1544816A Use of electric water hammer principle and large current pulse discharge water pump realized thereby |
| 11/04/2004 | US20040219025 Digital pressure controller for pump assembly |
| 11/04/2004 | US20040216525 Measurement system of torsion vibration for reactor internal pump |
| 11/03/2004 | CN2653180Y Pipeline pump protector |
| 11/02/2004 | US6811382 Integrated pumping system for use in pumping a variety of fluids |
| 10/27/2004 | EP1471260A2 Circulation pump with valve arrangement |
| 10/20/2004 | EP1469203A2 Feed pump |
| 10/20/2004 | CN2649819Y Brake type multifunctional water pump control valve |
| 10/20/2004 | CN1172091C Method for controlling assist pump for fluid delivery system with pulsatile pressure |
| 10/20/2004 | CN1172090C Multi-stage variable pressure water supply pump for supply of water in city |
| 10/13/2004 | CN2648116Y Variable frequency controlling device for asphalt pump |
| 10/07/2004 | US20040199480 Detection of pump cavitation/blockage and seal failure via current signature analysis |
| 10/06/2004 | EP1463877A1 A pump/valve assembly and a cooling circuit containing such an assembly |
| 10/06/2004 | CN2646427Y Protective device for water pump |
| 10/05/2004 | US6799943 Centrifugal pump with multiple inlets |
| 09/29/2004 | CN2644719Y Automatic constant pressure controller of water pump |
| 09/29/2004 | CN2644718Y Intake waterless protection device of inline pump |
| 09/29/2004 | CN2644717Y Full-automatic intelligent controller of water pump |
| 09/28/2004 | US6798338 RF communication with downhole equipment |
| 09/28/2004 | US6796766 Adjustable radial pump, in particular for feeding a cooling medium for a motor vehicle |
| 09/16/2004 | DE10355499A1 Wasserpumpe und Verfahren zum Steuern der Durchflussrate von Kühlmittel Water pump and method of controlling the flow rate of coolant |
| 09/15/2004 | CN2641335Y Automatic water compensation type vacuum water drawing tank |
| 09/09/2004 | US20040173249 Dishwasher comprising spraying arms and a circulating pump |
| 09/09/2004 | DE4444704B4 Motorisch angetriebene Pumpe A motor-driven pump |
| 09/08/2004 | EP1454066A1 Submersible pump assembly with float switch |
| 09/08/2004 | EP1261900A4 Method and system for automatically controlling water level in storage tank through wireless control process |
| 09/02/2004 | DE202004009580U1 Electrically-driven submerged pump for shallow depths of water has water inlets around lower edge of bell-shaped housing and has humidity sensor connected to pump by electrical cable |
| 09/01/2004 | EP1452739A1 Pump-controller interface |
| 09/01/2004 | CN2637775Y Constant pressure water supply automatic controller |
| 09/01/2004 | CN2637774Y Automatic water-pumping controller for water tower |
| 08/26/2004 | WO2004072485A1 Digital pressure controller for pump assembly |
| 08/25/2004 | EP1450328A2 System for remote monitoring of centrifugal machines |
| 08/25/2004 | CN2635950Y 水泵控制阀 Pump Control Valve |
| 08/24/2004 | US6782301 Method for selecting centrifugal fluid machine by computer |
| 08/18/2004 | EP1386386B1 Downhole torque-generating and generator combination apparatus |
| 08/18/2004 | CN2634149Y High speed pump automatic startor for propylene raw material |
| 08/18/2004 | CN1521793A Fluid discharging method and fluid discharging apparatus |
| 08/18/2004 | CN1521405A Method and apparatus for controlling operating efficiency of water pump fan of control speed regulator |
| 08/18/2004 | CN1521404A Method for controlling operating efficiency of water pump fan for industrial controller and configuration software |
| 08/17/2004 | US6776584 Method for determining a centrifugal pump operating state without using traditional measurement sensors |
| 08/12/2004 | WO2004067863A1 Method and pump unit for the effective treatment of sewage in a transfer tank |
| 08/12/2004 | DE10303830A1 Control method for circulating pump for hot water supply in building, involves switching on circulating pump, when temperature at inlet piping between hot water tank and water tap exceeds preset value |
| 08/05/2004 | US20040151581 Method and apparatus for early fault detection in centrifugal pumps |
| 08/05/2004 | US20040148693 Method and device for controlling jet flow intensity for a spa |
| 08/04/2004 | CN2630529Y 多功能水泵控制阀 Multifunctional pump control valve |
| 08/04/2004 | CN1160846C Method for starting and steady-state supply of permanent-magnet synchronous notor particularly for driving hydraulic pump |
| 08/04/2004 | CA2445194A1 A method and device for controlling jet flow intensity for a spa |
| 07/29/2004 | US20040144570 Downhole torque-generating and generator combination apparatus |
| 07/28/2004 | CN2628759Y Intelligent electronic pumping controller |
| 07/22/2004 | US20040140726 Downhole torque generator |
| 07/21/2004 | CN2627246Y Household water tower automatic water extraction control device |
| 07/21/2004 | CN2627245Y Non-lifting shaft water pump blade angle adjuster |
| 07/21/2004 | CN1514910A Centrifugal pump with reverse rotation protection integrated on impeller blade |
| 07/21/2004 | CN1514137A Lead smelting lead pumping device and its technology |
| 07/15/2004 | WO2004059170A2 Improved centrifugal pump performance degradation detection |
| 07/15/2004 | WO2004059142A1 Thermal control of flowrate in engine coolant system |
| 07/15/2004 | US20040136848 Monodirectional impeller with flexible vanes |
| 07/15/2004 | DE10159511B4 Tauchpumpenanordnung mit einem Schwimmerschalter Submersible pump assembly with a float switch |
| 07/15/2004 | CA2748538A1 Thermal control of flowrate in engine coolant system |
| 07/06/2004 | US6758655 Process for determining a reference characteristic for controlling a pump |
| 06/30/2004 | EP1432914A1 Pump control system |
| 06/29/2004 | US6757665 Detection of pump cavitation/blockage and seal failure via current signature analysis |
| 06/29/2004 | US6755609 Radial pump |
| 06/24/2004 | US20040120804 Centrifugal pump performance degradation detection |
| 06/23/2004 | EP1431584A2 Multi-stage electric pump |
| 06/23/2004 | EP1431583A2 Device for actuating electric pumps in liquid distribution systems |
| 06/22/2004 | US6752168 System for controlling the working conditions for mechanical pumps, and a regulation valve for such a system |
| 06/15/2004 | US6751281 Measurement system of torsion vibration for reactor internal pump |
| 06/10/2004 | WO2004049086A1 Pressure regulated method for preventing cavitations in a technical system |
| 06/09/2004 | EP1426699A1 Circulation pumps automatic control system |
| 06/09/2004 | EP1426621A1 Electric pump operation control device |
| 06/09/2004 | DE10255514A1 Druckregelverfahren zur Vermeidung von Kavitationen in einer verfahrenstechnischen Anlage Pressure-control method to prevent cavitation in a process plant |
| 06/09/2004 | CN1503879A Fluid controlled pumping system and method |
| 06/08/2004 | CA2086298C Process and device for optimizing the transfer through pumping of multiphase effluents |
| 06/03/2004 | US20040105758 Method and system for liquid leak detection, notification and removal |
| 06/03/2004 | DE10254041A1 Verfahren und Vorichtung zur Störungsfrüherkennung bei Kreiselpumpen Procedures and Vorichtung for early fault detection for centrifugal pumps |
| 06/03/2004 | DE10249129A1 Pumpe mit Sensor im Pumpengehäuse Pump with a sensor in the pump housing |
| 06/03/2004 | DE10249128A1 Pumpe mit Verbindungsleitungen zu Messstellen Pump with connection lines to measuring points |
| 06/03/2004 | DE10228673B4 Rückdruckregulator Back pressure regulator |
| 06/02/2004 | CN1501077A Method and apparatus of detecting the condition of a centrifugal pump |
| 06/01/2004 | US6742999 Device for delivering single-phase or multiphase fluids without altering the properties thereof |
| 05/27/2004 | WO2004044535A1 Method and device for determining a level of a liquid in a reservoir of a motor vehicle |
| 05/27/2004 | US20040101415 Method and a pump apparatus for the generation of an adjustable, substantially constant volume flow of a fluid and a use of this method |
| 05/27/2004 | DE10252562A1 Car tank level measurement procedure, has capacitive sensor controlling extraction pump with dynamic related parameter threshold setting |
| 05/26/2004 | EP1422424A2 Method and apparatus for the early detection of failures in a centrifugal pump |
| 05/26/2004 | CN2617962Y Automatic electronic water pump controller |
| 05/26/2004 | CN2617961Y Automatic water tower pumping controller |
| 05/26/2004 | CN1499188A Method and device for detecting centrifugal pump fault |
| 05/19/2004 | EP1420165A2 Method and apparatus of detecting the condition of a centrifugal pump |
| 05/19/2004 | CN1497246A Method for measuring differential pressure and pump system using the method |
| 05/13/2004 | US20040090197 Method and apparatus of detecting disturbances in a centrifugal pump |
| 05/13/2004 | DE19524433B4 Einengung des Streufeldes von Kraftstoffpumpen Narrowing of the stray field of fuel pumps |
| 05/12/2004 | EP1418339A2 Method and apparatus of detecting disturbances in a centrifugal pump |
| 05/12/2004 | CN2615389Y One-way valve for high pressure pump |