| Patents for F04D 7 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts (4,105) |
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| 03/06/2003 | WO2003019012A1 Impeller shaft assembly system |
| 03/06/2003 | US20030044273 Impeller shaft assembly system |
| 03/06/2003 | CA2459704A1 Impeller shaft assembly system |
| 03/04/2003 | US6527511 Structure of an acid/base resistance pump |
| 02/27/2003 | US20030039544 Blood pump |
| 02/26/2003 | CN2537841Y Improved high chromium alloy blade wheel |
| 02/25/2003 | US6524066 Impeller for molten metal pump with reduced clogging |
| 02/20/2003 | US20030035730 Method and a pump apparatus for the generation of an adjustable, substantially constant volume flow of a fluid and a use of this method |
| 02/20/2003 | US20030035721 Liner for centrifugal slurry pumps |
| 02/19/2003 | EP1284370A1 Method for delivering variable amounts of flow, and dosing pump using this method |
| 02/19/2003 | EP1284369A1 Method for delivering variable amounts of flow, and dosing pumping using this method |
| 02/06/2003 | WO2003010451A1 Bushing arrangement for seal cavity protection in rotating fluid equipment |
| 02/05/2003 | CN2534395Y Multi-flushing head desilting & blowoff pump |
| 01/29/2003 | CN2533308Y Adjustable front- and rear- seal gap and easy-to-dismount residue slurry pump |
| 01/29/2003 | CN1393605A Remover for sand and soil |
| 01/23/2003 | WO2003006088A1 Artificial heart pump equipped with hydrodynamic bearing |
| 01/23/2003 | US20030017095 Reactor having a heat exchange medium circulation |
| 01/22/2003 | CN2532278Y Improved corrosion-resistant centrifugal pump |
| 01/22/2003 | CN1392347A Stirring pump in water |
| 01/16/2003 | US20030012642 Adjustable pump wear plate positioning assembly |
| 01/16/2003 | US20030010501 Technique for facilitating the pumping of fluids by lowering fluid viscosity |
| 01/14/2003 | CA2258482C Method and apparatus for removing bottom dross from molten metal |
| 01/08/2003 | EP1272762A2 Thermal barrier for reactor coolant pump |
| 01/02/2003 | US20030000113 Gravel-or-the-like removing device |
| 01/02/2003 | EP1270952A2 Stirring pump |
| 01/02/2003 | EP1270826A1 Gravel-or-the-like removing device |
| 01/02/2003 | EP1267959A2 Ventricular assist system secondary impeller |
| 01/01/2003 | CN2528996Y Mud pump |
| 12/25/2002 | CN2527766Y Pump for conveying residue and slurry |
| 12/25/2002 | CN2527747Y Impeller type centrifugal screening electric pump |
| 12/24/2002 | US6497559 Molten metal submersible pump system |
| 12/19/2002 | WO2002101245A1 Apparatus for use in slurry pumps |
| 12/19/2002 | US20020192088 Centrifugal pump with multiple inlets |
| 12/19/2002 | US20020191488 Underwater agitation pump |
| 12/18/2002 | CN1096573C Method for transmitting easy polymerized material |
| 12/12/2002 | WO2002099287A1 Pump for transporting a heat exchange medium for a multi-tube reactor |
| 12/12/2002 | DE10127365A1 Pump, used for conveying heat transfer medium, comprises housing containing guide pipe and having opening in its lower part, via which heat transfer medium removed from lower region of reactor flows into housing |
| 12/11/2002 | EP0774045B1 Centrifugal chopper pump |
| 12/05/2002 | DE10232967A1 Oxidation synthesizing reactor for e.g. synthesis of phthalic acid anhydride, comprises diagonal-action impeller wheel with heat medium throttle gap parallel to shaft |
| 12/04/2002 | CN2523989Y Multi-stage centrifugal oil pump with axially middle openings |
| 12/04/2002 | CN1383476A Drainage pump for condensated water |
| 12/04/2002 | CN1382913A Method for making anticorrosion glass pump |
| 12/03/2002 | US6488468 Pulp pump |
| 11/26/2002 | US6485257 Top-flow centrifugal fluid pump |
| 11/26/2002 | CA2173617C Centrifugal liquid pump with internal gas injection assembly |
| 11/20/2002 | EP0972136B1 Centrifugal liquid pump with internal gas injection |
| 11/20/2002 | CN1094569C Water submersible motor pump |
| 11/20/2002 | CN1094568C Sealed electric-motor pump |
| 11/19/2002 | US6481973 Method of operating variable-speed submersible pump unit |
| 11/19/2002 | US6481958 Side channel pump |
| 11/13/2002 | CN1094179C 泵叶轮 Pump impeller |
| 11/13/2002 | CN1094175C 具有内部气体喷射的离心液体泵 Having an internal gas jet centrifugal liquid pump |
| 11/07/2002 | DE10120409A1 Circulating pump has side channel impeller installed in side channel section between inlet housing and outlet housing with pressure channel, and has cooling pipe with cooling fins around pump shaft |
| 11/05/2002 | US6474937 Liquid pump, especially for delivering fuel |
| 11/05/2002 | US6474078 Pumping system and method for pumping fluids |
| 10/30/2002 | EP1252448A1 Centrifugal pump with multiple inlets |
| 10/29/2002 | US6471468 Compensator |
| 10/22/2002 | US6468039 Molten metal pump impeller |
| 10/17/2002 | WO2001066951A3 Thermal barrier for reactor coolant pump |
| 10/17/2002 | US20020151761 Implantable heart assist system and method of applying same |
| 10/15/2002 | US6464458 Molten metal impeller |
| 10/15/2002 | US6464454 Centrifugal pump |
| 10/10/2002 | US20020146319 Centrifugal pump improvements |
| 10/10/2002 | US20020146313 Molten metal pump with protected inlet |
| 10/10/2002 | US20020144509 Pumping system and method for pumping fluids |
| 10/09/2002 | EP1248032A2 Pumping system and method for pumping fluids |
| 10/06/2002 | CA2379008A1 Molten metal pump with protected inlet |
| 10/02/2002 | EP0889989B1 Method and device at the pumping of a medium |
| 10/01/2002 | US6457940 Molten metal pump |
| 09/26/2002 | WO2002075047A1 Pumping device |
| 09/24/2002 | US6454541 Method for transferring easily-polymerizable substance |
| 09/24/2002 | US6454522 Impeller for circumferential current pump |
| 09/18/2002 | CN2511813Y Rotary spray pump |
| 09/18/2002 | CN2511812Y Movable sand washing pump |
| 09/17/2002 | US6451247 Shaft and post assemblies for molten metal apparatus |
| 09/17/2002 | US6450764 Pulp pump |
| 09/12/2002 | US20020125680 Trailer and fuel tank assembly |
| 09/11/2002 | EP1135611A4 Improvements relating to froth pumps |
| 09/10/2002 | US6447266 Blood pump having a magnetically suspended rotor |
| 09/10/2002 | US6447245 Rotodynamic pump |
| 09/04/2002 | EP1235983A1 Electromagnetically suspended and rotated centrifugal pumping apparatus and method |
| 09/04/2002 | CN1367711A Degassing centrifugal apparatus, process for pumping and degassing fluid and process for producing paper or board |
| 08/27/2002 | US6439860 Chambered vane impeller molten metal pump |
| 08/22/2002 | US20020114714 Centrifugal pump |
| 08/14/2002 | CN1363455A Technology and apparatus for forming worm channel with plastic liner of centrifugal pump |
| 08/13/2002 | US6431831 Pump impeller with enhanced vane inlet wear |
| 08/07/2002 | EP1229250A1 Impeller for molten metal pump with reduced clogging |
| 08/06/2002 | US6428268 Pump with auxiliary impeller vane inlet device |
| 08/01/2002 | US20020102159 Impeller for molten metal pump with reduced clogging |
| 07/31/2002 | CA2365612A1 Impeller for molten metal pump with reduced clogging |
| 07/30/2002 | CA2254187C Pump impeller |
| 07/25/2002 | WO2001002724A9 Blood pump having a magnetically suspended rotor |
| 07/25/2002 | US20020098090 Pump system with vacuum source |
| 07/25/2002 | DE10102104A1 Laufradsystem für Pumpen Impeller system for pumps |
| 07/24/2002 | EP1225342A1 Impellersystem for pumps |
| 07/24/2002 | CN2502050Y Power sealed vertical mud pump |
| 07/18/2002 | US20020094286 Bearings with hardened rolling filements and polymeric cages for use submerged in very low temperature fluids |
| 07/18/2002 | US20020094281 Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method |
| 07/17/2002 | CN2500842Y Improved slurry pump flow passage part |
| 07/16/2002 | CA2079679C Bottled water chilling system |