| 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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| 03/28/2000 | US6042332 Housing part for a propeller pump |
| 03/15/2000 | CN2369014Y 碱泵 Alkali pump |
| 03/08/2000 | EP0984166A1 High capacity slurry pump |
| 03/08/2000 | EP0984165A2 Pump |
| 03/08/2000 | CN2367803Y Chemical pump |
| 03/07/2000 | US6033187 Method for controlling slurry pump performance to increase system operational stability |
| 02/24/2000 | WO2000009889A1 Molten metal pump with monolithic rotor |
| 02/24/2000 | DE19939314A1 Pump for cryogenic fluid, especially fluid gained during an air distillation process, such as liquid oxygen, has labyrinth seal to prevent contamination of cryogenic fluid by flow of operating fluid from motor to pump impeller |
| 02/23/2000 | CN2365429Y Vertical non-leakage corrosion resisting pump |
| 02/17/2000 | WO2000007912A1 Multiple channel system, apparatus and method for transporting particulate material |
| 02/16/2000 | EP0979355A1 A seal for a pump, and a pump comprising the seal |
| 02/10/2000 | DE19834815A1 Pump with cutting device for conveying medium mixed with solid constituents has rotatively driven running wheel provided with cutter forming gap to static counter cutter |
| 02/09/2000 | CN2363095Y Wearng-resistant and corrosion-resistant pump |
| 02/08/2000 | US6022216 Fluid separator for dental aspiration apparatus |
| 02/03/2000 | WO2000005505A1 Improved slurry pump |
| 02/01/2000 | US6019576 Pumps for pumping molten metal with a stirring action |
| 01/27/2000 | DE19833192A1 Process for burying highly viscous hydrocarbon products involves heating carrier in heat exchanger, via pump and reactor, with regulator, pipe and nozzles |
| 01/26/2000 | EP0973953A1 Process and device for precipitating compounds from zinc metal baths by means of a hollow rotary body that can be driven about an axis and is dipped into the molten zinc |
| 01/26/2000 | CN2360644Y 强力搅拌复合泵 Strong mixing composite pump |
| 01/19/2000 | EP0972136A1 Centrifugal liquid pump with internal gas injection |
| 01/19/2000 | CN2359499Y Vertical plastic-lined self-priming pump |
| 01/13/2000 | WO2000001490A1 Grinder pump |
| 01/06/2000 | WO2000000745A1 Centrifugal pump |
| 01/04/2000 | US6010319 Canned motor pump |
| 01/04/2000 | US6010086 Grinder pump |
| 12/29/1999 | EP0967475A1 Method for the determination of the viscosity of a liquid |
| 12/23/1999 | WO1999066209A1 Pulp pump |
| 12/22/1999 | CN2355137Y Automatic pneumatic vortex transfer pump |
| 12/09/1999 | DE19901729A1 Centrifugal pump for feeding liquids containing solids, e.g. slurry |
| 12/08/1999 | EP0961852A1 Pump for fibrous pulp suspension with means for separating gas from the suspension |
| 12/08/1999 | CN2352733Y Pressure balancing type centrifugal mud pump |
| 12/01/1999 | EP0960605A2 A fluid separator for dental aspiration apparatus |
| 11/30/1999 | US5993728 Gas injection pump |
| 11/16/1999 | US5984629 Turbo-machine with reduced abrasive wear |
| 11/16/1999 | US5984147 Rotary dispensing pump |
| 11/10/1999 | CN2348160Y Oil pump with the whole lining |
| 11/10/1999 | CN2348159Y Pneumatic hydraulic bellows pump of glass lining or fluorine-lined plastic |
| 11/10/1999 | CN2348158Y Vertical sand pump |
| 11/10/1999 | CN2348157Y Back sealing cover improved self-priming acid-proof pump |
| 10/28/1999 | WO1999054026A1 A flow directing device for a medium consistency pump |
| 10/28/1999 | CA2329710A1 A flow directing device for a medium consistency pump |
| 10/14/1999 | WO1999051884A1 Molten metal impeller |
| 10/13/1999 | EP0948717A1 Centrifugal pump |
| 10/13/1999 | CN2343387Y Centrifugal pump |
| 10/05/1999 | US5961285 Method and apparatus for removing bottom dross from molten zinc during galvannealing or galvanizing |
| 10/05/1999 | CA2066434C Sheet metal pump casing |
| 09/29/1999 | CN1230243A Self-priming type centrifugal pump |
| 09/21/1999 | US5954277 Agitated slurry pump box for oil sand hydrotransport |
| 09/14/1999 | US5951263 Implantable electric axial-flow blood pump with blood-cooled bearing |
| 09/14/1999 | US5951243 Rotor bearing system for molten metal pumps |
| 09/08/1999 | EP0746683B1 Pump with fluid bearing |
| 09/08/1999 | CN2337332Y Self priming acid-resistant pump with improved front capping |
| 09/07/1999 | US5947705 Molten metal transfer pump |
| 08/31/1999 | US5944496 Molten metal pump with a flexible coupling and cement-free metal-transfer conduit connection |
| 08/31/1999 | US5944482 Front-removable bearing housing for vertical turbine pump |
| 08/25/1999 | EP0723476B1 Centrifugal liquid pump with internal gas injection assembly |
| 08/19/1999 | WO1999041418A1 Process and device for precipitating compounds from zinc metal baths by means of a hollow rotary body that can be driven about an axis and is dipped into the molten zinc |
| 08/18/1999 | EP0917625A4 Molten metal transfer pump |
| 08/18/1999 | CN1226307A Hybrid magnetically suspended and rotated centrifugal pumping apparatus and method |
| 08/17/1999 | US5938412 Blood pump having rotor with internal bore for fluid flow |
| 08/11/1999 | CN2332833Y Self-sucking turbulence non-clogging pollution discharge pump |
| 07/28/1999 | CN2330814Y Self-priming sewage discharge pump |
| 07/27/1999 | CA2080591C Pump having a single or a plurality of helical blades |
| 07/20/1999 | US5924848 Blood pump having radial vanes with enclosed magnetic drive components |
| 07/15/1999 | DE19900060A1 Collection tank and pump unit for pumping of particle-laden impure cooling medium from floor-standing machine tool station |
| 07/14/1999 | CN2328817Y Molten urea pump |
| 07/13/1999 | US5921746 Fuel pump chamber with contamination control |
| 07/09/1999 | CA2257702A1 Floor mounted double containment low profile sump pump assembly |
| 07/07/1999 | CN2327815Y Inductive four waveband electromagnetic pump for liquid metal |
| 07/07/1999 | CN2327814Y Vertical centrifugal pump without shaft gland for solid, liquid and gas fluids |
| 07/07/1999 | CN1222201A Method and appts. for removing bottom dross from molten metal |
| 06/30/1999 | EP0925451A1 Implantable electric axial-flow blood pump with blood-cooled bearing |
| 06/23/1999 | EP0924434A1 A pump |
| 06/23/1999 | CN1220348A Pump |
| 06/17/1999 | WO1999030039A1 Centrifugal pump |
| 06/15/1999 | US5911565 Pump for conveying hot media |
| 06/09/1999 | CN1219220A Water submersible motor pump |
| 06/02/1999 | CN1218148A Pump impeller |
| 05/26/1999 | EP0917625A1 Molten metal transfer pump |
| 05/26/1999 | CN1217435A Pump vane |
| 05/19/1999 | EP0916852A1 A pump impeller |
| 05/19/1999 | EP0916851A1 A pump impeller |
| 05/19/1999 | EP0916024A1 Rotodynamic pump |
| 05/12/1999 | CN1216591A System for feeding a suspension to a pressurized vessel |
| 04/28/1999 | EP0911527A1 Pump with a cutting device |
| 04/21/1999 | CN2315337Y 改进的砂石泵 Improved sewage pump |
| 04/21/1999 | CN1214748A Method and device at pumping of medium |
| 04/14/1999 | EP0907759A1 Method and apparatus for removing bottom dross from molten metal |
| 04/07/1999 | CN2313085Y Corrosion-resistant centrifugal pump integrated with machine |
| 03/24/1999 | CN2311638Y Ventical centrifugal pump with anti-leaking combination apparatus |
| 03/18/1999 | DE19754751C1 Circulation flow generation device for pumping station |
| 03/17/1999 | EP0902189A2 Feed pump |
| 03/17/1999 | EP0901574A1 Submerged motor pump |
| 03/17/1999 | CN2310877Y Integrated vane and pump body high-efficiency energy-saving large-flow molten-salt pump |
| 03/17/1999 | CN1210949A Feed pump |
| 03/17/1999 | CN1210946A Isolation sleeve for magnetic pump and its producing technology |
| 03/16/1999 | US5882182 High-temperature motor pump and method for operating thereof |
| 03/10/1999 | CN2310185Y 耐腐蚀泵 Naifushibeng |
| 03/04/1999 | DE19737885A1 Centrifugal pump for producing a water-air mixture |
| 03/02/1999 | US5875627 Fluid propulsion system for accelerating and directionally controlling a fluid |