| Patents for F04D 13 - Pumping installations or systems (12,375) |
|---|
| 12/31/1991 | US5076716 Thrust bearing with spiral grooved face |
| 12/27/1991 | EP0462724A1 Integrated turbine generator |
| 12/26/1991 | WO1991019905A1 Improvements in or relating to pumps |
| 12/24/1991 | US5074764 Submergible motor pump |
| 12/24/1991 | US5074762 Compact structural assembly for feeding propellants at high pressure to a rocket engine |
| 12/24/1991 | US5074746 Constant speed vertical pump with aeration |
| 12/17/1991 | US5073736 Brushless pump motor with built-in electronic control |
| 12/17/1991 | US5073335 Bwr turbopump recirculation system |
| 12/12/1991 | WO1991019103A1 Hydrodynamically suspended rotor axial flow blood pump |
| 12/11/1991 | EP0460551A2 Vehicle washer pump |
| 12/11/1991 | CN2090445U Safety waterproof pump |
| 12/11/1991 | CN2090444U 自动水泵 Automatic Pump |
| 12/10/1991 | US5071317 Centrifugal pump having a unitary one-piece diffusion casing and a unitary one piece turbine impeller unit |
| 12/10/1991 | US5071314 Method and fish pump for pumping up fish from a cod end |
| 12/04/1991 | EP0459034A1 Method for constructing a pumping installation and pumping installation manufactured according to the method |
| 12/04/1991 | CN2089991U Energy saving two-purpose blower |
| 12/04/1991 | CN1056736A Long life submersible (oil) electric centrifugal pump |
| 11/27/1991 | CN2089539U Digital controlled water feeding pressure increasing screen pump |
| 11/21/1991 | DE4110488A1 Rotating magnetic coupling for flow valve - has filter between coupling magnets to prevent particles from entering housing |
| 11/21/1991 | DE4015519A1 Water circulating pump with impeller made of plastics - which is mounted on shaft with sharp edges |
| 11/20/1991 | CN2089083U Strong magnetic apparatus for preventing electric submerged pump from scaling |
| 11/19/1991 | US5066200 Double containment pumping system for pumping hazardous materials |
| 11/19/1991 | US5066193 Water pump housing closure and a water pump gasket adjustment mechanism |
| 11/14/1991 | WO1991017341A1 Apparatus and method for producing a high-pressure fluid used for fluid-jet cutting |
| 11/13/1991 | EP0260320B1 Cartridge pump |
| 10/29/1991 | US5061157 Submersible pump |
| 10/23/1991 | CN2087253U Fluid-driven submersible pump |
| 10/16/1991 | EP0451376A1 Centrifugal blood pump and motor drive |
| 10/16/1991 | CN2086811U Multipurpose tandem pumps with inner water cooling |
| 10/16/1991 | CN2086810U Pressurizing water supply unit with submersible electric pump arranged in pipeline |
| 10/16/1991 | CN1055415A Installation of pressurizing water supply device in pipeline for submersible electric pump |
| 10/16/1991 | CN1055414A Series connection device of submersible electric pump used in deep-well |
| 10/10/1991 | DE4011477A1 Support cage for centrifugal pump and motor assembly |
| 10/09/1991 | CN1055224A Industrial suspended pump driven by an aircraft engine |
| 10/09/1991 | CN1014265B Undersea conveying apparatus of crude oil and natural gas |
| 10/08/1991 | US5055006 Submerged motor pump having an outer casing which is radially deformable |
| 10/08/1991 | US5055005 Fluid pump with levitated impeller |
| 10/08/1991 | US5055000 Enclosed pump motor and housing thereof |
| 10/02/1991 | CN2085866U 便携式电扇 Portable fans |
| 09/26/1991 | DE4009199A1 Dry running protection for magnetic coupling pump - has provision of two auxiliary wheels for lubrication and cooling |
| 09/26/1991 | DE4009198A1 Dry running protection for split tube motor pump - has two auxiliary wheels for lubrication and cooling |
| 09/25/1991 | EP0447709A2 Magnetically driven pump |
| 09/25/1991 | CN2085432U Mini-circulating pump |
| 09/24/1991 | US5051071 Heat dissipating coupling for rotary shafts |
| 09/24/1991 | CA1289477C Containment assembly |
| 09/19/1991 | DE4108257A1 Magnet coupling pump - incorporates radial and axially supported shaft carrying flywheel with at least one passage from suction chamber to pressure chamber |
| 09/19/1991 | DE4008278A1 Radial pump for automobile engines - comprising two-part housing consisting of pump chamber formed by first housing-part and insert |
| 09/19/1991 | DE4008267A1 Nozzle water pump system - involves combustion chamber, gas emission nozzle and water suction pipe formed as unit |
| 09/18/1991 | EP0447106A2 Improved nuclear reactor coolant pump with internal self-cooling arrangement |
| 09/18/1991 | EP0261180B1 Anti-contamination flow control in liquids |
| 09/18/1991 | CN1054650A Centrifugal pump lubricant strainer system |
| 09/17/1991 | US5049134 Sealless heart pump |
| 09/05/1991 | WO1991013256A1 Combined electric motor and pump unit |
| 09/05/1991 | WO1991011350A3 Impeller pump of cleaning liquid for motor vehicles |
| 09/04/1991 | CN2084115U Anti-corrosive swirl pump |
| 09/03/1991 | US5045026 Sealless pump assembly apparatus |
| 09/03/1991 | US5044897 Radial drive for implantable centrifugal cardiac assist pump |
| 09/03/1991 | US5044883 Water pump or the like |
| 09/03/1991 | US5044440 Underwater station for pumping a well flow |
| 08/29/1991 | DE4005923A1 Multistage centrifugal pump aggregate - has combination of booster and main pump for offshore work |
| 08/20/1991 | US5040954 In-tank type motor-operated pump |
| 08/20/1991 | CA1287773C Screw pump drive |
| 08/14/1991 | DE4104282A1 Pump designed to handle wet cement - has screen conveyor connected to serpentine rotor mounted in stator |
| 08/14/1991 | CN2082777U Submersible pump for miniature well |
| 08/13/1991 | US5039286 Electrically-driven rotary pump |
| 08/08/1991 | WO1991011618A1 Pump with funnel shroud |
| 08/08/1991 | WO1991011350A2 Impeller pump of cleaning liquid for motor vehicles |
| 08/08/1991 | CA2035608A1 Vertical sump pump motor |
| 08/07/1991 | WO1991012412A1 Centrifugal pump lubricant strainer system |
| 08/07/1991 | EP0440046A1 Submerged pump |
| 08/07/1991 | CA2075380A1 Centrifugal pump lubricant strainer system |
| 07/31/1991 | EP0438517A1 Canned motor pump with pressure-proof casing. |
| 07/31/1991 | EP0438485A1 Bearing for the shaft of a canned motor pump. |
| 07/31/1991 | EP0438466A1 Filtering device for a canned motor pump. |
| 07/31/1991 | CN2081906U Total-enclosed floating pump |
| 07/24/1991 | EP0438334A1 Manufacturing method of a centrifugal pump driven by an electrical motor and motor pump so obtained |
| 07/23/1991 | US5033937 Centrifugal pump with modular bearing support for pumping fluids containing abrasive particles |
| 07/17/1991 | CN2081001U High-efficient central heating circulating pump |
| 07/03/1991 | CN2080108U Micro electric oil filling device |
| 07/03/1991 | CN1013049B Suspended pump |
| 07/02/1991 | US5028321 Method and apparatus for water circulation, cleaning, and filtration in a swimming pool |
| 07/02/1991 | US5028218 Immersion pump assembly |
| 07/02/1991 | US5028211 Torque coupling system |
| 06/26/1991 | CN2079674U Seal tyre pressure device for sealing turbine pump |
| 06/25/1991 | US5026253 Belt-driven water pump |
| 06/20/1991 | DE3941444A1 Permanent-magnet drive for pump, stirrer on tap - is encased in splint bowl of carbon fibre or aramide reinforced plastic with carborundum bearing rings |
| 06/20/1991 | DE3941149A1 Immersion pump for handling waste water - with combination of two electric motor units to improve performance |
| 06/18/1991 | US5025185 Bubble trap for epoxy sealant in a submersible electric motor |
| 06/12/1991 | EP0431332A2 Magnetically driven pump |
| 06/12/1991 | CN2078813U Separating water pump driven by bicycle |
| 06/11/1991 | US5022228 Over the shaft fuel pumping system |
| 06/04/1991 | US5021048 Blood pump drive system |
| 05/23/1991 | DE3938575A1 Protection device for permanent-magnet clutch - has concentric brake brought into play by trip devices in event of irregular or eccentric rotation of driving element |
| 05/21/1991 | US5017103 Centrifugal blood pump and magnetic coupling |
| 05/21/1991 | US5017102 Magnetically coupled pump and nuclear reactor incorporating said pump |
| 05/21/1991 | US5017087 Multi-functional rotary hydraulic machine systems |
| 05/16/1991 | WO1991007004A1 Induction motor of the outer rotor-type |
| 05/15/1991 | EP0427145A1 Pump with driving motor |
| 05/15/1991 | CN2077050U Ring fully-sealing electric centrifugal pump |
| 05/15/1991 | CN2077049U Spiral-flow pump |