| Patents for F04D 1 - Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps (3,447) |
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| 03/07/2001 | CN2422468Y Water pump |
| 03/02/2001 | CA2300488A1 Biological precision screw pump |
| 02/27/2001 | US6193479 Pump with storage tank |
| 02/14/2001 | CN2419393Y First stage separate double sucking impeller for multi-stage centrifugal pump |
| 02/07/2001 | CN2418276Y Spiral compound impeller multi-stage centrifugal pump |
| 01/31/2001 | CN2417309Y Two stage and vertical type self-suction pipeline pump |
| 01/30/2001 | US6179553 Multiple stage centrifugal pump |
| 01/24/2001 | CN1281100A Turbo-compressor device |
| 01/17/2001 | EP1069313A2 Turbo compressor |
| 01/17/2001 | CN1280252A Pump device installed with storage tank |
| 01/10/2001 | EP1066220A1 Method and pump for impelling water in waters |
| 01/10/2001 | CN1279358A 磁力泵 Magnetic pump |
| 01/09/2001 | US6171080 Immersed vertical pump with reduced thrust loading |
| 01/02/2001 | US6167724 Pump |
| 12/20/2000 | CN2411361Y Improved structure of pump case of multi-stage metal-plate pump |
| 12/20/2000 | CN1277328A Barrel-type shell turbopump |
| 12/13/2000 | EP1059455A1 A centrifugal pump formed by pressing and welding and its manufacturing process |
| 12/13/2000 | CN2410448Y Bidirectional pump |
| 12/13/2000 | CN1276854A Centrifugal pump formed by pressing and welding and its mfg. process |
| 12/12/2000 | US6158959 Pump impeller |
| 12/06/2000 | CN2409357Y Float-vane wheel structure for multi-stage sheet-metal pump |
| 12/06/2000 | CN2409356Y Hydraulic motor oil delivering device for hydraulic transmission horizontal helico-centrifuger |
| 12/06/2000 | CN2409355Y Differential controller for hydraulic transmission horizontal helico-centrifuger |
| 11/29/2000 | CN2408274Y Double stage detachable centrifugal pipeline pump |
| 11/29/2000 | CN2408273Y Double stage self suction centrifugal pipeline pump |
| 11/21/2000 | US6149385 Multiphase fluid pumping or compression device with blades of tandem design |
| 11/21/2000 | US6149384 Centrifugal pump |
| 11/08/2000 | CN1272907A Turbo type fluid machinery |
| 11/08/2000 | CN1272905A A fluid machinery, a flange for fluid machining and method for manufacturing them |
| 11/07/2000 | US6142736 Pump impeller |
| 11/07/2000 | CA2058532C Mineral processing screen separator |
| 11/02/2000 | EP1047879A1 Pitot tube inlet insert |
| 11/02/2000 | DE19953911A1 Multistage centrifugal pump has at least one impeller driven by another, and at least two impellers are form-lock interconnected in drive engagement via mating spigots and slots |
| 11/01/2000 | CN2403921Y Helical moderately enriched pump |
| 10/25/2000 | CN2402840Y Hydraulic drive horizontal screw centrifuger |
| 10/25/2000 | CN2402839Y Single bearing seat connected centrifugal water-alone pump |
| 10/19/2000 | DE19916370A1 Kreiselpumpe Rotary pump |
| 10/18/2000 | EP1045177A1 Centrifugal pump |
| 10/18/2000 | CN2401712Y Centrifugal pump |
| 10/12/2000 | WO2000059640A1 A separation device |
| 10/04/2000 | CN2399534Y Water sucking device of vacuum water pump |
| 10/04/2000 | CN1057148C Three-baffle slide bearing centrifugal pump |
| 09/27/2000 | CN2398450Y Multistage centrifugal peripheral pumps |
| 09/13/2000 | CN2396211Y Liquid delivering electric pum p |
| 09/07/2000 | DE19908143A1 Forged centrifugal pump casing, in form of double spiral casing produced from single forged part |
| 09/06/2000 | EP1033493A2 Stage in a submerged multiple-stage pump |
| 09/06/2000 | CN2395063Y Composite screw pump |
| 09/06/2000 | CN2395062Y Rigid connected centrifugal pump for pump shaft and motor shaft |
| 09/06/2000 | CN2395061Y Vertical detachable centrifugal pump |
| 08/23/2000 | EP1030063A2 Drain Pump |
| 08/23/2000 | CN2392931Y Multi-stage centrifugal pump |
| 08/23/2000 | CN2392930Y Double-suction centrifugal pump |
| 08/23/2000 | CN1263996A Drainage pump |
| 08/16/2000 | EP1028255A1 A turbo type fluid machinery |
| 08/16/2000 | EP1027542A1 Pitot tube pump having axial-stabilizing construction |
| 08/09/2000 | CN1262393A Drainage pump |
| 08/08/2000 | US6100618 Rotary machine with an electromagnetic rotary drive |
| 08/02/2000 | EP1024297A2 Drain pump |
| 08/02/2000 | EP1024291A2 Multistage pump for supplying semi-solid material |
| 08/02/2000 | EP1023537A1 Lubricating system, preferably for refrigerating machinery and comprising a pitot tube pump |
| 08/02/2000 | CN2390032Y Single stage double inlet centrifugal pump set |
| 08/02/2000 | CN2390031Y Suspension self-adjusting vertical volute pump |
| 08/01/2000 | CA2112357C Electrohydraulic machine |
| 07/20/2000 | WO2000042323A2 Water handling means |
| 07/19/2000 | EP1020644A1 A fluid machinery, a flange for fluid machinery, and a method for manufacturing them |
| 07/19/2000 | CN1260862A Mechanism for providing motive porce and for pumping application |
| 07/12/2000 | EP1017943A1 Magnetic-drive assembly for a multistage centrifugal pump |
| 07/12/2000 | CN2387286Y Centrifugal plastic self-sucking pump |
| 07/06/2000 | DE19860784A1 Pump for oil feed system for exhaust turbochargers has outlet pipe connected to pressure tube projecting into centrifuge and dipping into fluid |
| 07/05/2000 | CN1259192A Freeze tolerant rotating fluid management device |
| 07/04/2000 | US6082960 Regenerative pump |
| 06/29/2000 | WO2000037804A1 Power driven device with centrifugal fluid circulation, such as a motor pump or a motor compressor |
| 06/28/2000 | EP1012477A1 Bearing and seal-free blood pump |
| 06/28/2000 | CN2385108Y Motor-pump direct linking horizontal centrifugal pump |
| 06/27/2000 | CA2086554C Rotary disc pump |
| 06/21/2000 | CN2384006Y Miniature high-lift double-stage self priming pump |
| 06/14/2000 | CN2382861Y Self suction pump |
| 06/14/2000 | CN2382860Y Self protective anti-cavitation high temperature spray centrafugal pump |
| 06/14/2000 | CN2382859Y 轮式抽水泵 Wheeled pumps |
| 06/07/2000 | CN2381816Y 离心式泵 Centrifugal Pump |
| 05/31/2000 | EP1003970A1 Improved rotor for blood pump |
| 05/31/2000 | CN2380724Y Portable air-blower |
| 05/30/2000 | US6068444 Submergible centrifugal pump having improved diffuser bushings |
| 05/24/2000 | CN2379625Y Detachable vertical centrifugal pump |
| 05/24/2000 | CN2379624Y Ship use vertical centrifugal pump having rotary liquid separator |
| 05/17/2000 | CN2378554Y Self-balancing multi-stage centrifugal water pump |
| 05/11/2000 | WO2000026542A1 Compensator |
| 05/11/2000 | WO2000026541A1 A centrifugal pump formed by pressing and welding and its manufacturing process |
| 05/02/2000 | CA2144443C Centrifugal pump of the sectional-casing design |
| 04/26/2000 | CN2375787Y Waterwheel peripheral pump for use in airfield |
| 04/19/2000 | EP0672223A4 Impelling apparatus |
| 04/19/2000 | CN2374671Y Liquid conveyer |
| 04/05/2000 | EP0990799A1 Water coolant pump |
| 04/05/2000 | CN2372485Y Dismounting self-suction centrifugal pipeline pump |
| 03/29/2000 | CN2371372Y Handy detachable vertical multi-stage centrifugal pump |
| 03/29/2000 | CN2371371Y Pump with multi-bearing jointed inlet and outlet |
| 03/22/2000 | CN1247943A Oil pumping unit |
| 03/15/2000 | CN2369013Y Vertical self-sucking pump |
| 03/15/2000 | CN2369012Y Accentric water pump |
| 03/08/2000 | EP0984165A2 Pump |