| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 05/10/2006 | CN2779115Y Centrifugal water pump |
| 05/02/2006 | US7036371 Device for detection of an unbalanced oil mass in a rotor, rotor fitted with such a device, and machine equipped with such a rotor |
| 04/26/2006 | EP1649171A1 Locking device of the stator pack of pumps |
| 04/25/2006 | US7033137 Vortex blower having helmholtz resonators and a baffle assembly |
| 04/19/2006 | EP1647716A2 Drain pump |
| 04/19/2006 | CN2773363Y Vertical cylindrical-bag multi-stage pump tube |
| 04/19/2006 | CN2773359Y End-face sealer of high-pressure centrifugal water pump |
| 04/19/2006 | CN1760553A Drain pump |
| 04/13/2006 | WO2006037557A1 High-pressure centrifugal pump, particularly for abrasive liquids |
| 04/12/2006 | CN1757935A Drainage pump |
| 04/11/2006 | CA2143033C Turboexpander pump unit |
| 04/06/2006 | WO2006035724A1 Vertical shaft centrifugal pump, rotor for the pump, and air conditioner |
| 04/06/2006 | DE102004046266A1 Submersible pump for cylindrical container has vertical tube mounted centrally in container with removable pump head at top driving rotor shaft connected to pump mechanism at bottom |
| 04/06/2006 | DE102004046224A1 Submersible pump for cylindrical container has vertical tube mounted centrally in container with removable pump head at top driving rotor shaft connected to pump mechanism at bottom |
| 04/05/2006 | CN2769574Y Dynamic controllable balancing disc balancing axle force multistage centrifugal pump |
| 04/04/2006 | US7021890 Turbo pump |
| 03/29/2006 | CN1247902C Mud pump impeller finishing method |
| 03/28/2006 | US7018177 Impeller lock assembly and method |
| 03/22/2006 | CN2766069Y Apparatus for dynamically regulating and controlling axial force of multiple-stage centrifugal pump |
| 03/22/2006 | CN2766068Y Multiple-stage centrifugal pump with symmetrically arranged impellers capable of dynamically regulating and controlling axial force |
| 03/22/2006 | CN2766067Y Multiple-stage centrifugal pump capable of dynamically regulating and controlling axial force balanced by balance drum |
| 03/22/2006 | CN2766066Y Energy-saving vertical multistage fire-fighting pump |
| 03/15/2006 | CN2764982Y Vertical double suction ship and ship used centrifugal pump |
| 03/15/2006 | CN2764970Y Breath type horizontal multi-stage centrifugal pump |
| 03/15/2006 | CN2764967Y Eddy flow centrifugal constant pressure pump |
| 03/15/2006 | CN2764478Y Scroll fan with ionization dust collection effect |
| 03/08/2006 | EP1631369A2 Pump having an additional fluid supply |
| 03/08/2006 | CN2763593Y Energy-saving water-cooling type centrifugal pump |
| 03/07/2006 | US7008174 Fuel pump having single sided impeller |
| 03/02/2006 | WO2006021560A1 Rotodynamic fluid machine |
| 03/02/2006 | CA2578295A1 Rotodynamic fluid machine |
| 02/22/2006 | CN2760292Y Centrifugal pump |
| 02/21/2006 | CA2363620C Centrifugal pump with inducer intake |
| 02/16/2006 | US20060034676 Regenerative fluid pump and stator for the same |
| 02/16/2006 | DE102005021857A1 Kraftstoffpumpe Fuel pump |
| 02/15/2006 | EP1625304A1 Multistage centrifugal pump |
| 02/08/2006 | EP1261385B1 Blood pump |
| 02/08/2006 | CN2756878Y Anti-corrosion, anti-wear type post sucking type centrafugal pump |
| 02/02/2006 | DE102005022027A1 Kraftstoffpumpe mit einseitigem Verdichter Fuel pump with single-sided compressor |
| 01/26/2006 | DE102004031469A1 Gesteuerte, energiesparende Mindestmengeneinrichtung einer mehrstufigen Kreiselpumpe mit einer Höchstdrucksonderstufe Controlled, energy-saving minimum quantity to build a multi-stage centrifugal pump with a maximum pressure special stage |
| 01/25/2006 | CN2753911Y Vane pump |
| 01/25/2006 | CN2753907Y Vertical series-parallel centrifugal pump |
| 01/25/2006 | CN2753906Y Vortex special pump for fire control |
| 01/18/2006 | EP1617084A1 Drainage pump |
| 01/18/2006 | CN2752500Y 离心泵 Centrifugal |
| 01/18/2006 | CN2752491Y Vertical multi-stage centrifugal pump |
| 01/12/2006 | US20060008344 Fuel pump |
| 01/11/2006 | EP1190177B1 Centrifugal pump |
| 01/11/2006 | CN2751165Y Multipurpose sand pump |
| 01/04/2006 | EP1612426A2 Controlled, energy efficient multi stage centrifugal pump with high pressure stage |
| 01/04/2006 | CN1715680A Controlled, energy efficient multi stage centrifugal pump with high pressure stage |
| 12/29/2005 | WO2005124157A1 A centrifugal discharge pump |
| 12/28/2005 | CN1712729A Automatic sucker for gas-liquid separation |
| 12/28/2005 | CN1233943C Centrifugal pump |
| 12/27/2005 | US6979174 Stage pump having composite components |
| 12/08/2005 | DE102005022026A1 Kraftstoffpumpe mit einseitigem Verdichter Fuel pump with single-sided compressor |
| 12/07/2005 | CN1704608A 泵 Pump |
| 12/06/2005 | US6971848 Multistage pump and method of making same |
| 12/01/2005 | US20050265833 Pump |
| 11/23/2005 | EP1581745A3 Surface aeration impellers |
| 11/17/2005 | WO2005108796A1 A centrifugal pump with high force ratio, inner reduction friction and centripetal increasing pressure and its method threrof |
| 11/17/2005 | US20050254951 Restraining device for fan blade root |
| 11/17/2005 | US20050254943 Pump device |
| 11/17/2005 | US20050254936 Fuel pump |
| 11/16/2005 | EP1596069A2 Pump device |
| 11/16/2005 | EP1499413A4 Apparatus and method for continuously removing air from a mixture of ground polyurethane particles and a polyol liquid |
| 11/16/2005 | CN1696513A 泵装置 Pump device |
| 11/10/2005 | US20050249617 Fuel pump having single sided impeller |
| 11/10/2005 | US20050249581 Fuel pump having single sided impeller |
| 11/10/2005 | DE102005015821A1 Laufrad und Kraftstoffpumpe, die dieses verwendet Impeller and fuel pump that uses this |
| 11/08/2005 | CA2215615C Medical fluid pump |
| 11/03/2005 | WO2005103499A1 Centrifugal pump and method of manufacturing the same |
| 11/02/2005 | CN1692230A Impeller |
| 10/27/2005 | US20050238479 Centrifugal Pump with screw pump accelerator |
| 10/26/2005 | EP1588055A1 Electric motor pump for swimming pool maintenance |
| 10/20/2005 | WO2005098239A1 Pressurizing centrifugal pump |
| 10/20/2005 | WO2005098238A1 Impeller lock assembly and method |
| 10/20/2005 | WO2005098237A1 Screw-centrifugal pump |
| 10/20/2005 | CA2560316A1 Pressurizing centrifugal pump |
| 10/19/2005 | CN2735053Y Automatic watering, exhausting and pumping control device for centrifugal pump |
| 10/18/2005 | US6955637 Separation device having a centrifugal rotor |
| 10/13/2005 | US20050226715 Impeller and fuel pump using the same |
| 10/12/2005 | EP1584820A1 Mixed flow pump |
| 10/12/2005 | CN1680722A Self-suction rotary liquid spraying pump |
| 10/12/2005 | CN1680721A Impeller and fuel pump using the same |
| 10/06/2005 | DE102004013380A1 Device for increasing pressure in water supply especially of high buildings has spring elements installed between pump outer side and pipe inner side to keep pump unit centered |
| 10/05/2005 | EP1581745A2 Surface aeration impellers |
| 09/29/2005 | US20050214141 Driving motor, especially for a pump |
| 09/29/2005 | US20050214125 Impeller lock assembly and method |
| 09/22/2005 | US20050207888 Centrifugal fan and casing thereof |
| 09/22/2005 | US20050207883 Vortex blower having helmholtz resonators and a baffle assembly |
| 09/21/2005 | CN1670378A Double end compound tooth type labyrinth screw pump |
| 09/14/2005 | CN2725591Y Water suction apparatus |
| 09/13/2005 | US6942448 Pump |
| 09/07/2005 | EP1571349A1 Inlet guide vane housing for a pump |
| 09/07/2005 | CN2723743Y Stereo pump seal structure |
| 09/07/2005 | CN1218127C Pump device provided with storage tank |
| 09/01/2005 | US20050191176 Rotor for a centrifugal pump |
| 08/31/2005 | CN2721919Y Small-flow pump |
| 08/31/2005 | CN2721918Y Horizontal multi-stage pump |