| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 01/10/2007 | CN1892044A Single-stage centrifugal pump with motor elongated shaft expansion structure |
| 01/10/2007 | CN1892043A Parallel series pump |
| 01/10/2007 | CN1892042A Straight serial pump |
| 01/10/2007 | CN1892041A High-suction performance pump |
| 01/03/2007 | EP1739310A1 Pressurizing centrifugal pump |
| 01/03/2007 | CN1890469A Fluid transportation machine |
| 01/03/2007 | CN1888448A Method for keeping shaft seal pressure equal for two serial centrifugal pumps |
| 01/03/2007 | CN1888442A Improved multi-stage centrifugal pump |
| 01/03/2007 | CN1888441A High-sealing multi-stage pump |
| 12/27/2006 | EP1735535A1 Impeller lock assembly and method |
| 12/19/2006 | US7150600 Downhole turbomachines for handling two-phase flow |
| 12/08/2006 | CA2549665A1 Coolant pump with axial output |
| 12/06/2006 | EP1631369B1 Pump-pressure-exchanger system for reverse osmosis processes |
| 12/06/2006 | CN2844531Y Axial-forced balancing disk unit for balanced sectional multi-stage pump |
| 12/06/2006 | CN2844530Y Axial-forced balancer of sectional multi-stage pump |
| 11/30/2006 | US20060269178 Horizontal Centrifugal Pumping System |
| 11/30/2006 | DE19819267B4 Seitenkanalverdichter Side channel blowers |
| 11/29/2006 | CN2842016Y Medium-pressure horizontal multi-stage centrifugal pump |
| 11/28/2006 | CA2230514C Side-channel centrifugal pump |
| 11/23/2006 | US20060263202 Curved blade oil scoop |
| 11/22/2006 | CN2839674Y 立式单级双吸离心泵 Vertical single-stage double-suction centrifugal pump |
| 11/22/2006 | CN2839653Y Easyly disassembling vertical mutli-stage centrifugal pump |
| 11/22/2006 | CN1867394A Process for the continuous production of emulsions |
| 11/08/2006 | EP1718856A1 Propulsion of vehicles or transport of a medium by means of a conical body |
| 10/29/2006 | CA2544896A1 A sealing arrangement for the attachment of a side plate of a centrifugal pump and an attachment screw used therewith |
| 10/29/2006 | CA2544827A1 A centrifugal pump and an impeller thereof |
| 10/25/2006 | CN2830731Y Two-stage double-sorption pump rotor |
| 10/25/2006 | CN2830723Y Booster of multi-stage externally circulating shielded pump |
| 10/25/2006 | CN2830717Y Coupled-type dual-stage centrifugal pump |
| 10/17/2006 | CA2240340C Mixed flow liquid ring pumps |
| 09/27/2006 | CN1839265A Apparatus for axial adjustment of chopper pump clearances |
| 09/27/2006 | CN1837620A Interior spiral pump of motor shaft |
| 09/26/2006 | CA2401082C Blood pump |
| 09/20/2006 | CN2818869Y Self-balancing axial centrifugal pump |
| 09/20/2006 | CN1834466A Drainage pump |
| 09/19/2006 | US7108484 Restraining device for fan blade root |
| 09/14/2006 | US20060204361 Adjustable Inflate and Deflate Air Pump |
| 09/13/2006 | EP1625304B1 Multistage centrifugal pump |
| 09/12/2006 | US7104766 Horizontal centrifugal pumping system |
| 09/06/2006 | CN2813937Y Non-leakage verticle full-automatic self-priming pump |
| 08/31/2006 | DE19534061B4 Zentrifugalströmungspumpe Zentrifugalströmungspumpe |
| 08/30/2006 | CN2811625Y Two end supporting type centrifugal oil pump |
| 08/30/2006 | CN1826472A Locking device of the stator pack of pumps |
| 08/29/2006 | US7097416 Rotary disc pump |
| 08/24/2006 | DE102005005142A1 Horizontally/vertically operating centrifugal processing machine for conveying gas/ fluid in float, has housing segment connecting cells over part of rotor surrounded by section, with fluid, for energy exchange between fluid and cells |
| 08/16/2006 | EP1691079A1 Drain pump and air conditioner with the same |
| 08/16/2006 | EP1689529A2 Two stage sewage grinder pump |
| 08/16/2006 | CN2806844Y Double-casing volute pump |
| 08/16/2006 | CN2806838Y Single-stage centrifugal pump with motor lengthened shaft extension structure |
| 08/16/2006 | CN2806833Y Linear series connection pump |
| 08/16/2006 | CN2806832Y Parallel series connection pump |
| 08/16/2006 | CN2806831Y Pump with high suction performance |
| 08/16/2006 | CN1270094C Improved pilot tube insert |
| 08/16/2006 | CN1270093C High-performed energy-saving multifunctional water pump |
| 08/09/2006 | EP1047879A4 Pitot tube inlet insert |
| 08/09/2006 | CN2804442Y Improved one-stage double-sucking centrifugal pump |
| 08/09/2006 | CN2804437Y Vertical centrifugal cyclone constant pressure fire pump |
| 08/09/2006 | CN1815039A Multi-stage centrifugal pump capable of self-balancing axial force by impeller |
| 08/09/2006 | CN1815034A Industrial pump and manufacturing method thereof |
| 08/09/2006 | CN1815033A High-pressure spiral-coil pump |
| 08/08/2006 | USRE39228 Field-serviceable solids-handling vertical turbine pump |
| 08/08/2006 | US7086832 High pressure rotary pump in a pot housing with a pressure cap |
| 08/03/2006 | US20060171800 Drain pump and air conditioner with the same |
| 08/02/2006 | CN1811200A Dynamic regulation method of axial force in multistage centrifugal pump with balance drum to balance axial force |
| 08/02/2006 | CN1811199A Dynamic regulation method of axial force in multistage centrifugal pump with balance disc to balance axial force |
| 08/02/2006 | CN1811191A Regulator for dynamic regulation of axial force in multi-stage centrifugal pump |
| 08/02/2006 | CN1811190A Dynamic regulation method of axial force in multi-stage centrifugal pump with symmetrically configured vane wheel |
| 08/02/2006 | CN1267648C Turbomachine with radial-flow type compressor propeller |
| 07/26/2006 | CN1266386C Barrel-type shell turbopump |
| 07/19/2006 | CN2797706Y 离心泵 Centrifugal |
| 07/11/2006 | US7074014 Dipping type pump where discharging performance at a time of actuation has been improved |
| 07/11/2006 | US7073334 Variable exhaust gas turbocharger |
| 06/29/2006 | WO2006068529A1 High capacity relativist rotor |
| 06/28/2006 | EP1673157A1 Process for the continuous production of emulsions |
| 06/28/2006 | CN2791320Y Dual oil pressure steam turbine oil pump |
| 06/21/2006 | EP1671033A2 Pump |
| 06/21/2006 | CN2789474Y Booster rotary spraying pump |
| 06/21/2006 | CN2789465Y Counterflow liquid bottom pump added with hydrodynamic and hydrostatic bearing |
| 06/21/2006 | CN2789464Y Water inlet up moving counter-flow liquid bottom pump |
| 06/21/2006 | CN2789463Y Pipeline type rotary spraying pump |
| 06/15/2006 | US20060127232 Multistage centrifugal pump |
| 06/14/2006 | EP1508701B1 Self-opening air extractor |
| 06/14/2006 | CN2787881Y Water conduction free centrifugal water pump |
| 06/14/2006 | CN1788165A Drain pump and air conditioner with the same |
| 06/14/2006 | CN1786483A Centrifugal pump |
| 06/14/2006 | CN1786479A Centrifugal pump for deep well |
| 05/31/2006 | EP1508702B1 Air extractor with a removable front lid |
| 05/31/2006 | CN2784639Y Middle-open single-stage double-suction centrifugal pump |
| 05/31/2006 | CN2784633Y Novel balance bush of multistage centrifugal pump |
| 05/31/2006 | CN2784626Y Centrifugal pump with check device |
| 05/31/2006 | CN1779275A Improved axial force balancing structure of shielded pump |
| 05/26/2006 | WO2006053944A1 Degassing centrifugal apparatus with sensor |
| 05/24/2006 | CN2782992Y High speed magnetic centrifugal pump |
| 05/18/2006 | US20060104840 Electric motor pump for swimming pool maintenance |
| 05/18/2006 | US20060104804 Automotive fuel pump with pressure balanced impeller |
| 05/17/2006 | CN2781052Y Vertical multi-stage outer circulation canned motor pump |
| 05/17/2006 | CN2781036Y Easy dismounted canned motor multi-stage centrifugal pump |
| 05/17/2006 | CN1773121A Pipe flowing electric pump |
| 05/10/2006 | CN2779130Y Vertical multi-stage inner loop type screening pump |
| 05/10/2006 | CN2779116Y Multi-stage rotary spray pump |