| Patents for F04D 13 - Pumping installations or systems (12,375) |
|---|
| 05/08/1991 | CN2076618U Energy saving case for submersible pump |
| 05/08/1991 | CN2076617U Energy saving water pump set |
| 05/02/1991 | EP0425257A2 Centrifugal blood pump |
| 05/01/1991 | CN2076175U Large-power magnetically driving pump |
| 04/30/1991 | US5011372 Aeration apparatus for pond |
| 04/25/1991 | CA2028257A1 Centrifugal blood pump |
| 04/24/1991 | CN2075714U Oil immersed water cool electric pump |
| 04/23/1991 | US5009578 Motor driven pumps |
| 04/17/1991 | CN2075267U Household mini-electric water pump |
| 04/17/1991 | CN1050758A Multifunctional non-medium self-priming centrifugal pump |
| 04/16/1991 | CA1283157C Magnetically coupled pump |
| 04/10/1991 | EP0421280A1 Precessing centrifugal pump integrally combined with a motor |
| 04/10/1991 | CN2074834U Flexible shaft water pump |
| 04/03/1991 | EP0420218A1 Submersible pump |
| 04/03/1991 | CN2074385U Sealing means with a spacing chamber |
| 03/27/1991 | CN2073947U High-lift miniature underwater electric pump |
| 03/27/1991 | CN1012202B Full dry submerged pump with synergistic selaing system |
| 03/20/1991 | CN2073494U Farming pedal water pump |
| 03/20/1991 | CN1012100B Magnetic pump |
| 03/20/1991 | CN1012099B 离心泵 Centrifugal |
| 03/19/1991 | WO1991004417A1 Pump or compressor unit |
| 03/19/1991 | US5000613 Shaft coupling with alignment adjustment device |
| 03/19/1991 | CA2066672A1 Pump or compressor unit |
| 03/14/1991 | DE4027176A1 Submersible electric fuel pump - has independent brush spring fixing plate to assist final assembly of connection end |
| 03/12/1991 | US4998865 Brushless DC pump with enclosed circuit board |
| 03/12/1991 | US4998863 Magnetic pump drive |
| 03/07/1991 | WO1991002659A1 Heating device for the seating compartment of motor vehicles |
| 03/06/1991 | CN1049705A Reversible numerically-controlled high-voltage shielded electrical motor / pump |
| 02/27/1991 | CN2072161U Small-size auto-water pump |
| 02/26/1991 | CA1280639C Method and apparatus for pumping liquids |
| 02/21/1991 | DE3931665C1 Split-ring electric motor for pump - has feeder coupled to pump chamber at point exhibiting high pressure |
| 02/21/1991 | DE3927391A1 Vorrichtung zum beheizen des fahrgastraumes eines kraftfahrzeuges Device for heating the passenger compartment of a motor vehicle |
| 02/20/1991 | CN1049399A Heat-transmission unit of power machine-heat pipe pump |
| 02/13/1991 | EP0412858A1 Electrical motor-pump with air-gap sleeve |
| 02/12/1991 | US4992690 Combination motor endshield and pump housing |
| 02/12/1991 | US4992689 Modular protector apparatus for oil-filled submergible electric motors |
| 02/12/1991 | US4992030 Sump draining apparatus |
| 02/12/1991 | US4992027 Hydraulic control valve for fuel pumping system |
| 02/12/1991 | CA2023130A1 Enclosed pump motor and wiring thereof |
| 02/12/1991 | CA2023103A1 Enclosed pump motor and housing thereof |
| 02/10/1991 | CA2022751A1 Dual auger top loading pumping system for manure tank wagon |
| 02/07/1991 | WO1991001584A1 Radial drive for implantable centrifugal cardiac assist pump |
| 02/06/1991 | CN2070837U Double water cooling integral electric centrifugal pump |
| 02/05/1991 | US4990068 Unique grease lubricated ball bearing canned motor pump |
| 02/05/1991 | US4989411 Over the shaft fuel pumping system |
| 01/30/1991 | CN2070372U Miniature water pump |
| 01/30/1991 | CN1011437B Vertical submersible pump assembly |
| 01/23/1991 | EP0409456A2 Pump with separate fluidizing vaned shaft adjacent impeller |
| 01/17/1991 | DE3922206A1 Pump unit for fire-fighting vehicle - makes use of friction brake operated by coupling |
| 01/16/1991 | CN2069498U Submersible axial-flow pump |
| 01/16/1991 | CN2069497U Multifunctional water pump device for bicycle |
| 01/15/1991 | US4984972 Centrifugal blood pump |
| 01/11/1991 | CA2020735A1 Radial drive for implantable centrifugal cardiac assist pump |
| 01/09/1991 | EP0407316A1 Rotary pump with electrical drive |
| 01/09/1991 | EP0398929A4 Radio frequency suppression for fuel pump |
| 01/09/1991 | CN2069043U Submerged electric fuel charger |
| 01/08/1991 | US4983305 Power recovery pump turbine |
| 01/08/1991 | US4983101 Drive mechanism for pumps |
| 01/08/1991 | CA2020585A1 Rotary pump with electric drive |
| 01/02/1991 | EP0405173A2 Motor-operated pump of intank type |
| 01/02/1991 | CN2068611U Soft shaft submersible pump |
| 01/02/1991 | CA1278602C Submersible pump with expanded foam housing |
| 01/01/1991 | US4981420 Immersion pump |
| 01/01/1991 | US4981413 Pump for and method of separating gas from a fluid to be pumped |
| 12/27/1990 | WO1990015640A1 Cardiac assist pump |
| 12/26/1990 | CN2068166U Water cooling gasoline engine for fractional pump |
| 12/25/1990 | US4979880 Apparatus for pumping well effluents |
| 12/12/1990 | EP0401761A2 Magnet pump |
| 12/11/1990 | US4976586 Pump with separate fluidizing vaned shaft adjacent impeller |
| 12/06/1990 | DE3917811A1 Pump for use in sterile or clean room - has cooling system for motor which does not require circulation of air |
| 11/28/1990 | EP0398929A1 Radio frequency suppression for fuel pump. |
| 11/28/1990 | CN2066518U Submarine pump without seating force |
| 11/28/1990 | CN1047370A Submersible pump |
| 11/27/1990 | US4973408 Water purification and desalinaiton |
| 11/27/1990 | US4973231 Submersible pump |
| 11/22/1990 | EP0398377A2 Rotary hydraulic machine |
| 11/22/1990 | EP0398175A1 Magnetically coupled pump |
| 11/22/1990 | EP0398005A2 Pump |
| 11/21/1990 | CN1010499B Pump |
| 11/20/1990 | US4971526 Dual auger top loading pumping system for manure tank wagon |
| 11/14/1990 | CN2065686U Oxygen increasing/water pump two-purpose machine |
| 11/14/1990 | CN1046960A Hot power pump |
| 11/13/1990 | US4969803 Compressor unit |
| 11/07/1990 | CN1046789A Axle of electric immersible pump for oil extraction |
| 10/31/1990 | EP0395236A1 Pump for separating gas from a fluid to be pumped |
| 10/31/1990 | EP0227758B1 Pump unit |
| 10/31/1990 | DE4014175A1 Cooling system for oil pump - makes use of common drive shaft for pump and blower |
| 10/31/1990 | CN1046587A Submersible pump for automobile watering cleaner |
| 10/30/1990 | US4966708 Controlling reverse osmosis water purification system |
| 10/30/1990 | US4966572 Drive and bearing for water pump |
| 10/30/1990 | US4966534 Sump draining apparatus |
| 10/30/1990 | US4966532 All dry submersible motor pump with a concordant seal system |
| 10/30/1990 | US4966522 In-tank type fuel pump |
| 10/24/1990 | CN2064431U Submersible pump |
| 10/23/1990 | US4964646 Fluid handling apparatus with shaft sleeve and extension |
| 10/17/1990 | CN2063989U Hand-driven filter pump |
| 10/17/1990 | CN2063987U Submersible electric pump |
| 10/17/1990 | CN1010049B Balancing-type rotary diversion case deep well phreatic water pump |
| 10/17/1990 | CN1010048B Pump |
| 10/10/1990 | EP0391352A2 Submergible motor pump |