| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 04/14/2011 | WO2011042646A1 Double cylinder electric pump for pool maintenance |
| 04/14/2011 | DE102008009647B4 Schlammreaktorpumpe zur gleichzeitigen Förderung von Feststoffen, Flüssigkeiten, Dampfen und Gasen Sludge reactor pump for simultaneous transport of solids, liquids, vapors and gases |
| 04/13/2011 | CN201794794U Double-shell multistage centrifugal pump capable of reducing pressure pulsation |
| 04/13/2011 | CN201794793U Double-casing multi-stage centrifugal pump |
| 04/13/2011 | CN201794792U Novel multi-stage centrifugal pump |
| 04/13/2011 | CN201794791U High-pressure terrace pump |
| 04/13/2011 | CN1788165B Drain pump and air conditioner with the same |
| 04/13/2011 | CN101705944B Underwater vertical oil-gas multiphase pump for offshore production wells |
| 04/12/2011 | US7922464 Magnetic drive pump |
| 04/06/2011 | CN201786676U Horizontal type multistage oil pump |
| 04/06/2011 | CN201786675U Horizontal centrifugal pump |
| 04/06/2011 | CN201786674U Bottom-in side-out vertical centrifugal pump |
| 04/06/2011 | CN102003395A Multi-purpose self-balancing multistage pump for ship |
| 03/30/2011 | CN201779034U Centrifugal pump adopting screw shaft and centrifugal impeller structure |
| 03/30/2011 | CN1715680B Multi stage structure type centrifugal pump |
| 03/30/2011 | CN101994701A Pipeline delivery pump |
| 03/24/2011 | WO2011032549A1 Axial-radial turbomachine |
| 03/24/2011 | DE102009044087A1 Gartenpumpe, insbesondere Regenfasspumpe Garden pump, especially rain barrel pump |
| 03/23/2011 | EP1216359B1 Centrifugal pump |
| 03/23/2011 | CN201771783U Multilevel centrifugal pump with double inlets and mass flow |
| 03/23/2011 | CN201771782U Splitter blade pump |
| 03/23/2011 | CN201771781U Partial pressure water supply multistage pump |
| 03/23/2011 | CN201771780U Multi-stage double-suction pump with added guide vanes |
| 03/23/2011 | CN201771779U Improved single-step double-suction centrifugal pump |
| 03/23/2011 | CN201771778U Centrifugal pump convenient to disassemble |
| 03/23/2011 | CN201771777U Novel centrifugal pump |
| 03/23/2011 | CN101451532B Novel liquid metal transfer pump |
| 03/17/2011 | US20110064570 High Efficiency Low-Profile Centrifugal Fan |
| 03/16/2011 | CN201763614U Pitot turbine booster pump |
| 03/16/2011 | CN201763613U High-pressure self-balance horizontal multistage centrifugal pump |
| 03/16/2011 | CN201763612U Suction pump |
| 03/10/2011 | WO2011026678A1 Two-stage centrifugal pump |
| 03/10/2011 | US20110057452 wind turbine having an airflow deflector |
| 03/09/2011 | CN201757082U Multistage centrifugal pump impeller and multistage centrifugal pump |
| 03/09/2011 | CN201757062U Split pump structure |
| 03/09/2011 | CN101984258A Centrifugal bionic coupling pump |
| 03/03/2011 | US20110052426 Bundle insertion/extraction system and method |
| 03/03/2011 | DE102009029069A1 Zweistufige Kreiselpumpe Two-stage centrifugal pump |
| 03/01/2011 | US7896626 Electric pump |
| 02/24/2011 | DE102009028646A1 Förderaggregat Delivery unit |
| 02/23/2011 | CN201751581U Split multi-stage pump |
| 02/23/2011 | CN201751580U High-pressure double-suction pump |
| 02/17/2011 | DE102009036804A1 Centrifugal pump for conveying liquid by constantly rotating impeller, has housing and impeller with wings rotated in conveying area, where impeller is partially interspersed by opening, which is covered on rear side of impeller |
| 02/16/2011 | CN201747618U Dual-suction multistage centrifugal pump |
| 02/16/2011 | CN201747617U Horizontal multi-stage pump |
| 02/16/2011 | CN201747616U Two-stage middle open split case pump |
| 02/16/2011 | CN201747615U Light centrifugal pump |
| 02/16/2011 | CN101975168A Horizontal axial-suction sectional multistage high-pressure centrifugal pump |
| 02/15/2011 | US7887285 Pump and fluid supplying apparatus |
| 02/10/2011 | WO2011017075A1 Pump with integral caisson discharge |
| 02/10/2011 | WO2011014988A1 Centrifugal pressure pump and energy transformation device using the same |
| 02/10/2011 | DE102009028310A1 Flüssigkeitspumpe Liquid pump |
| 02/09/2011 | CN101968056A Overflow-free self-propelled mud suction pump |
| 02/09/2011 | CN101566158B High performance mechanical canned motor pump |
| 02/03/2011 | DE102009033111A1 Spalttopf Containment shell |
| 02/03/2011 | DE102009028144A1 Fluidpumpenvorrichtung mit Dichtungseinrichtung Fluid pump assembly with sealing means |
| 02/02/2011 | CN201730832U Self-suction centrifugal pump |
| 02/02/2011 | CN201730829U Directly-coupled centrifugal pump |
| 01/26/2011 | CN201723451U Single-stage single-suction cantilever type chemical solution centrifugal pump |
| 01/26/2011 | CN101956712A High-pressure compression unit for process fluid for industrial plant and related method of operation |
| 01/26/2011 | CN101956711A Computational fluid dynamics (CFD)-based centrifugal pump multi-working condition hydraulic power optimization method |
| 01/26/2011 | CN101956710A Method for hydraulically optimizing centrifugal pump under working conditions based on loss |
| 01/19/2011 | CN201714679U Condensate pump for million-kilowatt super-critical thermal power generating unit |
| 01/19/2011 | CN201714678U Multistage clear water centrifugal pump |
| 01/19/2011 | CN201714677U Residual heat removal pump of nucleus secondary pump for pressurized water reactor nuclear power plant |
| 01/13/2011 | US20110008186 High-pressure compression unit for process fluids for industrial plant and a related method of operation |
| 01/12/2011 | CN201705675U Novel multistage centrifugal pump |
| 01/12/2011 | CN201705674U Novel centrifugal water pump |
| 01/12/2011 | CN201705673U Centrifugal water pump |
| 01/12/2011 | CN101943169A Centrifugal pump used for three-dimensional particle image velocimetry (PIV) measurement |
| 01/11/2011 | CA2463662C Method for optimizing the operation of a plurality of compressor assemblies of a natural-gas compression station |
| 01/06/2011 | WO2011000821A1 Turbomachine and impeller |
| 01/05/2011 | DE102009031309A1 Verfahren zur Förderung von Fluiden mit Kreiselpumpen Process for the production of fluids with centrifugal pumps |
| 01/05/2011 | CN201696302U Horizontal radial multi-stage centrifugal pump |
| 01/05/2011 | CN201696301U Unilateral cantilever support multistage centrifugal pump |
| 01/05/2011 | CN201696300U 两级悬臂离心泵 Two cantilever centrifugal pump |
| 01/05/2011 | CN101936293A Double-inlet large-flow multistage centrifugal pump |
| 01/05/2011 | CN101624992B Vertical centrifugal pump of hydraulic driven type |
| 12/29/2010 | CN201687774U Novel light double entry pump |
| 12/29/2010 | CN201687767U Single-stage single-suction centrifugal pump body |
| 12/29/2010 | CN201687754U Axial force balance mechanism of sectioned multi-stage centrifugal pump |
| 12/29/2010 | CN201687720U High-pressure multi-stage pump |
| 12/29/2010 | CN201687719U Horizontal three-absorption multistage centrifugal pump |
| 12/29/2010 | CN201687718U Novel sewage pump convenient to dismantle |
| 12/29/2010 | CN201687717U Centrifugal pump with novel supporting foot type pump base |
| 12/29/2010 | CN201687716U Novel vent valve vertical pipeline centrifugal pump |
| 12/29/2010 | CN101929465A Drainage pump |
| 12/29/2010 | CN101929464A Core-drawing type submerged pump |
| 12/25/2010 | CA2707226A1 Supersonic compressor comprising radial flow path |
| 12/22/2010 | CN201679550U Water pump structure with gear room |
| 12/22/2010 | CN101925748A Fluid machine |
| 12/22/2010 | CN101922452A Pitot-turbo booster pump |
| 12/22/2010 | CN101922451A Multistage centrifugal pump |
| 12/15/2010 | CN201671825U Boiler feed pump |
| 12/15/2010 | CN201671824U Multi discharge under-liquid multilevel pump |
| 12/15/2010 | CN201671823U Single-stage and single-suction centrifugal pump |
| 12/15/2010 | CN101918718A Fastening of the rotor of a centrifugal pump |
| 12/15/2010 | CN101918717A Material delivery apparatus |
| 12/12/2010 | CA2706306A1 Impeller for a magnetic pump and novel impeller housing design |
| 12/08/2010 | EP2258950A1 Fluid machine |