| Patents for F04D 13 - Pumping installations or systems (12,375) |
|---|
| 01/24/1990 | EP0188567B1 Centrifugal blood pump with tapered shaft seal |
| 01/24/1990 | CN2051682U Miniature electric oil sucking pump |
| 01/23/1990 | US4895493 Rotary pump |
| 01/18/1990 | DE3823726A1 Improvements in the design of fuel feed pumps |
| 01/18/1990 | DE3823461A1 Pumping device for liquids |
| 01/17/1990 | CN2051296U Low-position vacuum gas-removing system by using submerged pump |
| 01/17/1990 | CN2051295U Micro-type electric fuel-filling pump |
| 01/16/1990 | US4893647 In-tank fuel reservoir with reservoir fuel level control |
| 01/11/1990 | DE3822897A1 Recirculating (circulating, return) pump |
| 01/10/1990 | EP0349702A2 Belt-driven cooling-water pump |
| 01/10/1990 | CN2050890U Submersible pump for washing well |
| 01/10/1990 | CN2050889U Magnetic-sealing drying type electric submersible pump |
| 01/08/1990 | EP0261180A4 Anti-contamination flow control in liquids. |
| 01/03/1990 | CN2050486U Horizontal high pressure submersible pump |
| 01/03/1990 | CN1006321B Balance unit for pump axial force |
| 01/02/1990 | US4890988 Canned motor pump |
| 12/27/1989 | EP0347533A2 Canned pump |
| 12/27/1989 | CN2050101U Jet submersible dual-purpose machine for oxygen-increasing and pumping |
| 12/26/1989 | US4889468 Submerged type pump |
| 12/20/1989 | EP0346731A2 Submersible pump |
| 12/20/1989 | EP0346730A2 Submersible pump assembly |
| 12/20/1989 | CN2049700U Hand water pump |
| 12/14/1989 | DE3918333A1 Verbesserungen bei den in elektrischen haushaltsgeraeten verwendeten elektropumpen Improvements in electric pumps used in household electrical appliances |
| 12/13/1989 | EP0345916A1 Submersible pump, parts thereof and methods of making the parts |
| 12/13/1989 | CN2049285U Hydraulic submersible oil pump |
| 12/12/1989 | US4886989 Motor mounting method and means |
| 12/12/1989 | US4886430 Canned pump having a high inertia flywheel |
| 12/06/1989 | EP0344532A2 Sealing device of the bearing of a rotating shaft with its drive unit |
| 12/06/1989 | CN2048908U 多功能管道泵 Multi-function pipeline pump |
| 11/29/1989 | CN1037567A Axial-flow pipe pump |
| 11/22/1989 | CN2048124U Single-abserb submersible pumps with automatic balance |
| 11/22/1989 | CN2048123U Submerible pump of washing equipment for car |
| 11/22/1989 | CN2048122U Screw submerging electric pump |
| 11/21/1989 | US4882514 Submersible sodium pump |
| 11/16/1989 | WO1989011039A1 Submersible motor-driven pump |
| 11/15/1989 | EP0341368A1 Submersible motor pump |
| 11/15/1989 | CN2047733U Circulating pump for domestic radiator |
| 11/14/1989 | US4880362 Rotor with stabilizing magnets |
| 11/08/1989 | EP0341108A1 Motor pump assembly comprising a flushed rear-bearing system combined with an electrical rotation direction detector |
| 11/07/1989 | US4878804 Circulating pump |
| 11/07/1989 | EP0260320A4 Cartridge pump. |
| 11/01/1989 | CN1036817A Rotation mechanism |
| 10/31/1989 | US4877537 Pumping system for gates |
| 10/26/1989 | DE3812926A1 Centrifugal pump with magnetic coupling (clutch) |
| 10/26/1989 | DE3812109A1 Detergent-feeding device for domestic appliances, in particular dishwashers |
| 10/25/1989 | CN2046558U Mini-underwater electric pump for potted landscape with fountain |
| 10/25/1989 | CN2046557U Mini fully-automatic pump |
| 10/24/1989 | US4876492 Electronically commutated motor driven apparatus including an impeller in a housing driven by a stator on the housing |
| 10/18/1989 | CN2046157U Submersible electric pump |
| 10/10/1989 | US4872808 Centrifugal pump modular bearing support for pumping fluids containing abrasive particles |
| 10/03/1989 | US4871301 Centrifugal pump bearing arrangement |
| 09/26/1989 | US4869657 Magnetic pump of a photographic processing bath |
| 09/26/1989 | US4869654 Magnetic pump drive |
| 09/26/1989 | US4869649 Water pump apparatus |
| 09/20/1989 | CN1035709A 磁力泵 Magnetic pump |
| 09/13/1989 | CN1035550A Centrifugal pump bearing arrangement |
| 09/12/1989 | US4865529 Rotor transient positioning assembly |
| 09/12/1989 | US4865522 Fuel pump for an internal combustion engine having two pump units |
| 09/06/1989 | EP0331401A2 Energy recovery pump device |
| 08/31/1989 | DE3805322A1 Magnetic device for transmitting torques |
| 08/30/1989 | EP0330640A1 Turbine motor pump and rotary pump |
| 08/30/1989 | CN2043679U Semisubmersible axial-flow pump |
| 08/30/1989 | CN1035165A Vertical submersible pump assembly |
| 08/29/1989 | US4861468 Rotor impeller assembly |
| 08/29/1989 | US4861240 Centrifugal pump for electric household appliances such as washing machines, dishwashers and the like |
| 08/24/1989 | DE3804602A1 Explosionproof split-cage motor |
| 08/23/1989 | CN2043285U Full-dry type diving electric-pump with air-bag pressure-equalizing shaft gland |
| 08/23/1989 | CN1034982A Water pumping system using compressed air |
| 08/22/1989 | US4859157 Device for injecting fertilizer or other chemicals into a pipeline |
| 08/17/1989 | DE3803774A1 Pumpenaggregat fuer heizungsanlagen Pump unit for heating systems |
| 08/16/1989 | EP0328075A2 Submerged motor pump |
| 08/16/1989 | EP0327844A2 All dry submersible motor pump with a concordant seal system |
| 08/16/1989 | CN1034792A Full dry submerged pump with synergistic sealing system |
| 08/15/1989 | US4856971 Evaporative cooler pump apparatus |
| 08/10/1989 | DE3802890A1 Impeller suds pump for washing machines or dishwashers |
| 08/08/1989 | US4854828 Remotely removable and replaceable motor for hazardous service pump installation |
| 08/08/1989 | US4854823 Leak indicating device for centrifugal pump |
| 08/02/1989 | CN1034414A Subatmospheric extracting-unloading tank for liquid |
| 08/01/1989 | CA1258002A1 Fuel pump |
| 07/27/1989 | WO1989006875A1 Radio frequency suppression for fuel pump |
| 07/26/1989 | CN2041734U Domestic pump for central heating |
| 07/25/1989 | US4850821 Multiple magnet drive pump |
| 07/25/1989 | US4850818 Corrosion-resistant magnet pump |
| 07/20/1989 | DE3800313A1 Pumping device |
| 07/19/1989 | CN2041373U Portable electric fuel charger |
| 07/12/1989 | CN2040963U Film-air water-separated submersible pump |
| 07/12/1989 | CN2040962U Bottomless valve air-changing water-leading device of centrifugal pump |
| 07/12/1989 | CN2040961U Miniature petrol motor water pump |
| 07/11/1989 | US4847600 Son-air detector |
| 07/05/1989 | EP0322939A1 Device for injecting fertilizer or other chemicals into a pipeline |
| 07/04/1989 | US4845393 Radio frequency suppression for fuel pump |
| 07/04/1989 | US4844707 Rotary pump |
| 06/29/1989 | DE3842243A1 Pumpe und pumpen-betriebseinrichtung Pump and pump-operating device |
| 06/29/1989 | DE3743261A1 Twin pump for a flow medium with different delivery rates and delivery pressures |
| 06/28/1989 | CN2040180U Submersible pump with a floater |
| 06/28/1989 | CN2040179U Axial-flow pipe pump with integrative mechanical and electrical part |
| 06/28/1989 | CN2040178U Water pump without bottom valve |
| 06/28/1989 | CN1033535A Pump integrating electric motor with vane wheel |
| 06/27/1989 | US4842480 Multi-stage inline rotary pump |
| 06/20/1989 | US4840535 Vertical submersible pump assembly |