| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 08/31/2005 | CN2721917Y Vertical pipeline pump |
| 08/24/2005 | CN1658939A Apparatus and method for continuously removing air from a mixture of ground polyurethane particles and a polyol liquid |
| 08/24/2005 | CN1657785A Double-runner centrifugal pump for transfering submarine mineral substance |
| 08/17/2005 | CN2718286Y 离心式水泵止逆阀 Centrifugal pump check valve |
| 08/10/2005 | CN2716555Y Broad spectrum energy saving vertical-type multistage pump |
| 08/10/2005 | CN2716550Y Separating sand pump |
| 08/10/2005 | CN2716548Y 离心泵 Centrifugal |
| 08/10/2005 | CN1653270A Driving motor, especially for a pump |
| 08/10/2005 | CN1653269A Multistage pump, particularly of the immersion type |
| 08/03/2005 | CN1648463A Radial impeller |
| 08/02/2005 | US6923621 Diffuser for a turbo pump |
| 07/28/2005 | WO2005035447A3 Two stage sewage grinder pump |
| 07/27/2005 | EP1485144B1 Dual inlet mixed-flow blood pump |
| 07/27/2005 | CN2713177Y Single end multistage labyrinth screw pump |
| 07/27/2005 | CN1646806A Centrifugal pump with switched reluctance motor drive |
| 07/21/2005 | US20050158165 Single-shaft multistage pump |
| 07/20/2005 | EP1555439A2 Single-shaft multistage pump |
| 07/20/2005 | CN1641224A Single-shaft multistage pump |
| 07/12/2005 | US6916152 Centrifugal sewage pumps with two impellers |
| 07/07/2005 | US20050147505 Multistage pump |
| 06/23/2005 | WO2005057017A1 Fluid transportation machine |
| 06/23/2005 | WO2005035979A3 Pump |
| 06/22/2005 | CN2705639Y Centrifugal water discharge pump |
| 06/22/2005 | CN2705636Y Centrifugal water discharge pump |
| 06/22/2005 | CN1629496A Vertical multi-stage centrifugal pump shaped by stamping and welding |
| 06/16/2005 | WO2005054678A1 Drain pump and air conditioner with the same |
| 06/15/2005 | EP1540189A1 Restraining device for fan blade root |
| 06/15/2005 | CN1626828A Centrifugal pumps in parallel jointed series |
| 06/15/2005 | CN1626827A Centripetal automatic balancing pump |
| 06/08/2005 | CN2703905Y Centrifugal pump |
| 06/07/2005 | CA2226486C A rotor |
| 06/01/2005 | CN2703147Y Gas-liquid separating self-priming device |
| 06/01/2005 | CN2703146Y Vertical self-priming pump |
| 05/31/2005 | US6899517 Installing an annular bearing element within a centrifugal pump utilizing a mechanical staking operation. |
| 05/26/2005 | US20050112007 System and method of fluid transfer using devices with rotatable housings |
| 05/25/2005 | EP1066220B1 Method and pump for impelling water in waters |
| 05/25/2005 | CN2702091Y Horizontal multistage pump |
| 05/25/2005 | CN1620556A 多级泵 Multistage Pump |
| 05/25/2005 | CN1620555A Pump using waste tire |
| 05/19/2005 | US20050107657 Dual inlet mixed-flow blood pump |
| 05/19/2005 | US20050106047 Pump using waste tire |
| 05/17/2005 | US6893219 Two-stage pump with high head and low delivery |
| 05/17/2005 | US6893207 Impeller for gassy well fluid |
| 05/06/2005 | WO2005039745A1 Process for the continuous production of emulsions |
| 04/27/2005 | CN1609458A Double-priming centrifugal pump |
| 04/26/2005 | US6884031 Pump assembly |
| 04/21/2005 | WO2005035979A2 Pump |
| 04/21/2005 | WO2005035447A2 Two stage sewage grinder pump |
| 04/07/2005 | US20050074331 Multistage pump and method of making same |
| 04/07/2005 | US20050074330 Stage pump having composite components |
| 04/06/2005 | EP1520107A1 A regenerative fluid pump and stator for the same |
| 03/31/2005 | WO2004110598A3 Pump having an additional fluid supply |
| 03/31/2005 | US20050069439 Device for detection of an unbalanced oil mass in a rotor, rotor fitted with such a device, and machine equipped with such a rotor |
| 03/31/2005 | DE10330524A1 Molecular impulse pressure pump is driven by accelerating incoming volume to rotational speed |
| 03/30/2005 | EP1519179A1 Device for oil unbalance detection in a rotor, rotor with such a device, and apparatus comprising such a rotor |
| 03/30/2005 | EP1012477B1 Bearing and seal-free blood pump |
| 03/30/2005 | CN2688941Y Safety centrifugal pumps |
| 03/25/2005 | CA2482144A1 Device for detection of an unbalanced oil mass in a rotor, rotor fitted with such a device, and machine equipped with such a rotor |
| 03/22/2005 | CA2194257C Recirculation pumping system for installation below the perforations in a cased well bore |
| 03/16/2005 | CN1193172C Drainage pump for condensated water |
| 03/16/2005 | CN1193170C Electric pump with several impellers |
| 03/03/2005 | US20050047944 Surface driven well pump |
| 03/03/2005 | US20050047933 Low-noise pump cooled by the pumped water |
| 03/02/2005 | EP1509700A1 Multistage pump, particularly of the immersion type |
| 02/26/2005 | CA2478733A1 Surface driven well pump |
| 02/23/2005 | EP1508702A1 Air extractor with a removable front lid |
| 02/23/2005 | EP1508701A1 Self-opening air extractor |
| 02/17/2005 | WO2005015027A1 Locking device of the stator pack of pumps |
| 02/16/2005 | CN1580736A Detection device for un-balance oil amount in rotor, relative rotor and machine |
| 02/16/2005 | CN1580576A Micro-shearing-force centrifugal pump |
| 02/09/2005 | CN1576606A Vane and sewage treatment pump equipped with the same vane |
| 02/02/2005 | EP1502030A1 Driving motor, especially for a pump |
| 02/02/2005 | CN2675908Y Vertical multistage pump capable of automatically stabilizing voltage and supplying water |
| 02/01/2005 | CA2310062C Stage in a submerged multiple-stage pump |
| 01/27/2005 | US20050019153 Impulse turbine, particularly of the reversible type |
| 01/26/2005 | EP1499413A2 Apparatus and method for continuously removing air from a mixture of ground polyurethane particles and a polyol liquid |
| 01/26/2005 | CN1570392A Anti-diving type diving pump |
| 01/20/2005 | US20050013688 Impeller and sewage treatment pump including the same |
| 01/19/2005 | EP1497557A1 Centrifugal pump with switched reluctance motor drive |
| 01/19/2005 | CN2672336Y Vertical oil lubricating easy repair type single stage centrifugal pump |
| 01/19/2005 | CN2672335Y Vertical water lubricating easy repair type single stage centrifugal pump |
| 01/12/2005 | EP1495773A2 Centrifugal fluid pump apparatus |
| 01/12/2005 | CN2670641Y Drainage section structure of horizontal multi-stage pump with multi-angle outlets |
| 01/12/2005 | CN1564912A Method for optimizing the operation of a plurality of compressor assemblies of a natural-gas compression station |
| 01/06/2005 | US20050002789 Impeller |
| 01/05/2005 | EP1268972B1 Pressure boost pump |
| 01/05/2005 | DE10327401A1 Pumpe mit zusätzlicher Fluideinspeisung Pump with additional fluid feed |
| 01/05/2005 | CN1183040C Method and pump for impelling water in waters |
| 12/30/2004 | US20040265133 Method for optimizing the operation of a plurality of compressor assemblies of a natural-gas compression station |
| 12/23/2004 | WO2004110598A2 Pump having an additional fluid supply |
| 12/22/2004 | CN2665414Y Vertical pump capable of idle running with no shaft gland |
| 12/16/2004 | WO2004109117A1 Multistage centrifugal pump |
| 12/16/2004 | US20040253094 Centrifugal sewage pumps with two impellers |
| 12/15/2004 | EP1486668A1 Impulse turbine, particularly of the reversible type |
| 12/15/2004 | EP1485144A1 Dual inlet mixed-flow blood pump |
| 12/13/2004 | CA2469289A1 Impulse turbine, particularly of the reversible type |
| 12/08/2004 | EP1483509A1 Low-noise pump cooled by the pumped water |
| 12/08/2004 | CN2661970Y Vertical multi-stage centrifugal pump shaped by stamping and welding |
| 12/02/2004 | DE10322382A1 Mehrstufige Kreiselpumpe Multistage centrifugal pump |
| 12/01/2004 | CN1551951A Improved pitot tube insert |