| Patents for F04D 9 - Priming; Preventing vapour lock (1,858) |
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| 08/31/2004 | US6783330 Self-priming centrifugal pump |
| 08/26/2004 | WO2004072484A1 Device for transporting fluids |
| 08/25/2004 | EP1448894A1 Auto suction hybrid pump |
| 08/25/2004 | EP1088170B1 Pulp pump |
| 08/04/2004 | CN2630527Y Tube well water pump control valve for removing water |
| 07/28/2004 | EP1441130A2 Modular centrifugal pump casing |
| 07/21/2004 | EP1438506A1 Fuel transfer pump |
| 07/14/2004 | CN2625609Y Water pump vacuator |
| 07/08/2004 | DE10318862A1 Water carrying domestic appliance such as dishwasher or washing machine has separate chamber for drain pump located behind impeller and with holes radially on outside diameter and in vicinity of inside diameter |
| 07/01/2004 | WO2004055373A1 Water-bearing domestic appliance comprising a drainage pump and corresponding drainage pump |
| 06/29/2004 | CA2146580C Abrasion resistant gas separator |
| 06/24/2004 | US20040120828 Pump system with vacuum source |
| 06/01/2004 | US6743000 Hydraulic pump with flow guider |
| 05/26/2004 | CN2617959Y Water storage device for liquid pump |
| 05/25/2004 | CA2249248C Method and device at the pumping of a medium |
| 05/19/2004 | EP1419317A1 Self-priming centrifugal pump |
| 05/13/2004 | US20040091371 Pumping device |
| 05/06/2004 | WO2004038228A1 Improvements in bilge removal |
| 05/06/2004 | EP1415094A1 Pulp pump |
| 05/05/2004 | CN2614281Y Automatic control and hand-operated self-suction type water pump |
| 04/27/2004 | CA2117343C Multiphase fluid treatment |
| 04/22/2004 | DE10346196A1 Centrifugal circulation pump, e.g. for water, has degasifying device including gas line coming out at one end to pump wheel and at other end to low pressure region |
| 04/15/2004 | DE10296521T5 Pumpvorrichtung Pumping device |
| 04/08/2004 | DE19915255B4 Fördereinrichtung für Kraftstoff Conveyor for fuel |
| 04/07/2004 | CN2610123Y High-efficient energy-saving multipurpose water pump |
| 03/31/2004 | EP1402184A1 Self priming centrifugal pump |
| 03/31/2004 | CN2608726Y Water-ring vacuum self-absorption centrifugal pump |
| 03/30/2004 | CA2230691C An improved electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores |
| 03/25/2004 | WO2003078844A3 Pump system with vacuum source |
| 03/17/2004 | CN1482366A Energy conserving self-priming pump |
| 03/04/2004 | DE10239997A1 Electromagnetic pump has multiple turbine stages with output of last stage connected to discharge chamber of first stage |
| 02/24/2004 | CA2391110C Multiphase fluid treatment |
| 02/17/2004 | US6692234 Pump system with vacuum source |
| 02/10/2004 | CA2364721C Priming selection system with valve for fire pumper trucks |
| 02/05/2004 | DE10233281A1 Einrichtung zur Erhaltung der Saugfähigkeit einer Tauchmotorpumpe Means to maintain the absorbency of a submersible pump |
| 01/28/2004 | EP1384895A2 Venting system for submersible pump |
| 01/27/2004 | US6682313 Compressed air powered pump priming system |
| 01/27/2004 | US6682309 Submersible pump system |
| 01/15/2004 | US20040009058 Self priming regenerative pump |
| 01/14/2004 | EP1380755A2 Self priming regenerative pump |
| 01/07/2004 | CN2597713Y Vertical self-priming pump |
| 12/25/2003 | US20030235506 Dipping type pump where discharging performance at a time of actuation has been improved |
| 12/18/2003 | US20030231959 Impeller assembly for centrifugal pumps |
| 12/03/2003 | CN2589698Y Water pump automatic vacuum-pumping apparatus |
| 11/19/2003 | EP1169550A4 Pump assembly and related components |
| 11/13/2003 | US20030210991 Fuel transfer pump |
| 11/12/2003 | CN2585991Y Self-priming device of centrifugal pump |
| 10/29/2003 | CN2583401Y Composite liquid injection device |
| 10/15/2003 | EP1352176A2 Centrifugal pump with facilitated self-priming |
| 10/09/2003 | WO2003083310A1 Loading pump device |
| 10/07/2003 | US6629821 Apparatus with gas-liquid separating impeller inserted in pumped liquid flow path; cavity receiver receiving tail bottom of tornado shaped cavity produced by rotation of impeller to prevent extending; vacuum means connected via degassing path |
| 10/01/2003 | EP1348871A1 Low flow centrifugal pump with increased suction height |
| 10/01/2003 | CN2577008Y Vertical centrifugal pump series-connected with suction pressurized-water well |
| 10/01/2003 | CN1122755C Flow guider for large displaceemtn guiding pump |
| 09/25/2003 | WO2003078844A2 Pump system with vacuum source |
| 09/25/2003 | CA2479435A1 Pump system with vacuum source |
| 09/10/2003 | CN2572056Y Air discharger for water inlet pipe of fluid pump |
| 09/09/2003 | US6616427 Vacuum-assisted pump |
| 09/04/2003 | US20030165380 Self-priming pump |
| 08/20/2003 | CN2567371Y Practical self-priming pump non-return device |
| 08/13/2003 | CN1435574A Multi-pipe special water pump for undergound water |
| 08/06/2003 | EP0931222B1 Procedure for the starting up of pumps |
| 07/24/2003 | US20030138326 Submersible pump system |
| 07/23/2003 | CN1115486C Miniature resistance bottom valve |
| 07/16/2003 | EP1327781A2 Self-priming centrifugal pump |
| 07/16/2003 | CN1429992A Strong self-suction sewage pump |
| 07/10/2003 | WO2003056185A1 Centrifugal pump for hydromassages |
| 07/09/2003 | CN1114033C Equipment for conveying fuel by means of fuel conveying unit placed in shell body |
| 07/01/2003 | US6587037 Method for multi-phase data communications and control over an ESP power cable |
| 07/01/2003 | US6586900 Method for boosting the output voltage of a variable frequency drive |
| 07/01/2003 | US6585493 Hygienic self-priming centrifugal pump |
| 07/01/2003 | US6585492 Pump system with vacuum source |
| 07/01/2003 | CA2234809C Air purging circulator |
| 06/18/2003 | CN2556396Y Self-priming centrifucal pump |
| 06/12/2003 | WO2003048582A1 Auto suction hybrid pump |
| 06/12/2003 | US20030108437 Centrifugal pump with facilitated self-priming |
| 06/10/2003 | US6575706 Vacuum-assisted pump |
| 06/04/2003 | CN1421353A 甲烷运输船 Methane tankers |
| 05/28/2003 | EP1314927A1 Gas supply device for the propulsion unit of a gas tanker |
| 05/21/2003 | CN1109158C Method and device for pumping medium |
| 05/14/2003 | CN2550535Y Automatic seal joint |
| 05/07/2003 | EP0879359B1 A centrifugal pump device |
| 04/30/2003 | CN2547916Y Agricultural self-suction centrifugal pump |
| 04/23/2003 | CN2546658Y High-pressure centrifugal self-priming pump |
| 04/23/2003 | CN2546657Y Freeze-proofing two-purpose water pump |
| 04/03/2003 | WO2003027501A1 Fuel transfer pump |
| 04/03/2003 | DE20219999U1 Backflow prevention apparatus is for all media in connection with immersion and pressure pumps for firefighting and general technical uses |
| 03/26/2003 | CN2541632Y Vertical self-sucking pump |
| 03/12/2003 | EP1289358A2 Pump aggregate |
| 03/05/2003 | CN2538983Y Vertical self priming pump |
| 02/27/2003 | US20030039555 Self-priming centrifugal pump |
| 02/27/2003 | DE20219186U1 Circulating pump has deflecting wall formed in one piece with insert and extending from it in axial direction and prevents direct flow of entering working fluid from suction pipe connector to suction opening of impeller |
| 02/26/2003 | CN2537837Y Back flushing type self exhaust pump |
| 02/20/2003 | WO2003014573A1 Self-priming centrifugal pump |
| 02/20/2003 | WO2003014572A1 Pulp pump |
| 01/29/2003 | CN2533299Y 离心水泵 Centrifugal pumps |
| 01/29/2003 | CN2533298Y Strong self-priming pipeline pump |
| 01/23/2003 | US20030017065 Hydraulic pump with flow guider |
| 01/22/2003 | EP1277964A1 Hydraulic pump |
| 01/15/2003 | CN2531138Y Pump water-drawing pipe for vehicle |