| Patents for F04D 15 - Control, e.g. regulation, of pumps, pumping installations, or systems (4,967) |
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| 03/19/1992 | DE4028881A1 Protecting gas or liq. delivery system against dry running - using light transmitted via transparent walls to receiver only if without medium |
| 03/17/1992 | US5096391 In-tank fuel reservoir with integral fill pump |
| 03/05/1992 | WO1992003229A1 Method and apparatus for improving flotation separation |
| 03/03/1992 | US5092824 Pump output control system with high efficiency hydromechanical variable speed drive |
| 02/26/1992 | EP0472509A1 A method and a device for automatic circulation in a waste water pump station |
| 02/25/1992 | US5091144 Boiling water nuclear reactor containing ventilated suppresion pool |
| 02/25/1992 | US5090872 Method of controlling the operation of a pump in a pumping installation by detecting counterflow |
| 02/12/1992 | CN2095951U Self-suction automatic water pump |
| 01/23/1992 | WO1992001299A1 Fuel-bundle inversion for dual-phase nuclear reactors |
| 01/23/1992 | WO1992001298A1 Bwr series pump recirculation system |
| 01/23/1992 | WO1992001297A1 Reactor-core isolation cooling system with dedicated generator |
| 01/23/1992 | WO1992001296A1 Reactivity control system and method |
| 01/23/1992 | WO1992001295A1 Bwr zero pressure containment |
| 01/23/1992 | WO1992001294A1 Hydraulic control rod drive |
| 01/23/1992 | WO1992001293A1 Bwr turbopump recirculation system |
| 01/23/1992 | WO1992001292A1 Turbine-driven control rod drive |
| 01/23/1992 | WO1992001291A1 Reactivity control system |
| 01/23/1992 | WO1992001290A1 Steam cooled nuclear reactor with bi-level core |
| 01/23/1992 | WO1992001289A1 Nuclear reactor with bi-level core |
| 01/15/1992 | EP0466167A2 Method and apparatus for pumping a medium |
| 01/08/1992 | EP0464973A1 Medical device generating an alternating flow for driving implantable blood pumps |
| 01/08/1992 | EP0464355A2 Duplex centrifugal pump |
| 01/07/1992 | US5078741 Magnetically suspended and rotated rotor |
| 12/18/1991 | CN2090887U Industrial pump capable of preventing impact of water hammer |
| 12/17/1991 | US5073335 Bwr turbopump recirculation system |
| 12/12/1991 | WO1991019170A1 Flow sensor and control system |
| 12/11/1991 | EP0460399A2 Centrifugal pump and gasboiler including the same |
| 12/11/1991 | CN2090444U 自动水泵 Automatic Pump |
| 12/11/1991 | CN2090443U Reversible turbine pump used in high falling head transfusion |
| 12/10/1991 | US5071315 Windscreen washer pump for vehicle |
| 12/10/1991 | US5071314 Method and fish pump for pumping up fish from a cod end |
| 12/04/1991 | EP0459434A2 Hydropneumatic constant pressure device for automatic control of the operation and stopping of electrical motorpumps |
| 12/04/1991 | CN1056736A Long life submersible (oil) electric centrifugal pump |
| 11/19/1991 | US5066200 Double containment pumping system for pumping hazardous materials |
| 11/12/1991 | US5064357 Fuel supply apparatus |
| 11/12/1991 | US5064344 Partial throat diffuser |
| 10/30/1991 | EP0454529A1 Vertical centrifugal pump module |
| 10/29/1991 | CA1291464C Self-priming liquid ring pump methods and apparatus |
| 10/27/1991 | WO1991016541A1 Pump mounting apparatus for filtration system |
| 10/27/1991 | CA2080247A1 Pump mounting apparatus for filtration system |
| 10/23/1991 | CN1055586A Industrial pump set with controlled operation conditions |
| 10/22/1991 | US5058557 Apparatus for delivery of fuel from a storage tank to an internal combustion engine of a vehicle |
| 10/08/1991 | US5055000 Enclosed pump motor and housing thereof |
| 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 |
| 09/11/1991 | EP0445247A1 Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| 09/05/1991 | DE4104708A1 Testing liq. pump for various section heights - using closed feed system and evacuating tank to simulate suction heights and deriving characteristics and functional data |
| 08/13/1991 | US5039286 Electrically-driven rotary pump |
| 08/07/1991 | EP0440046A1 Submerged pump |
| 07/30/1991 | US5035583 Sewage pump priming system |
| 06/20/1991 | DE3941149A1 Immersion pump for handling waste water - with combination of two electric motor units to improve performance |
| 06/12/1991 | CN1052177A Low pressure recirculation valve |
| 05/29/1991 | CN1051778A Alarm for water failure of circulating pump |
| 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 |
| 05/14/1991 | US5015151 Motor controller for electrical submersible pumps |
| 05/08/1991 | EP0425613A1 Double-acting pump, in particular for windscreen wiper systems in motor vehicles. |
| 05/08/1991 | CN2076617U Energy saving water pump set |
| 05/08/1991 | CN1051231A Pumping plant |
| 05/01/1991 | CN1012514B Automatic water supplying device and method for controlling same |
| 04/17/1991 | CN1012387B Improved centrifugal pump |
| 04/10/1991 | EP0421959A1 Pumping station for the pressurization of antifire plants, civil plants and the like |
| 04/10/1991 | CN1050599A Balance piston and seal arrangement |
| 04/10/1991 | CN1050593A Electronically controlled pulse pump |
| 04/10/1991 | CN1050583A Anti-flooding sewage grinder pump liqucd level control system in separately mounted canister |
| 04/03/1991 | EP0420786A1 Balance piston and seal arrangement |
| 03/26/1991 | WO1991004099A1 Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| 03/26/1991 | CA2042050A1 Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| 03/21/1991 | DE4001523A1 Sewer system tank emptying mechanism - has vacuum pump following waste water discharge pump |
| 03/12/1991 | US4999117 Monitoring method for wastewater pump station and compatible apparatus |
| 03/12/1991 | US4998865 Brushless DC pump with enclosed circuit board |
| 03/12/1991 | US4998863 Magnetic pump drive |
| 03/06/1991 | CN1049705A Reversible numerically-controlled high-voltage shielded electrical motor / pump |
| 03/05/1991 | US4997340 Balance piston and seal arrangement |
| 02/20/1991 | CN1049396A Pump system operable by variable-speed control |
| 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 |
| 02/06/1991 | EP0411431A2 Windscreen washer pump for vehicle |
| 02/05/1991 | US4990068 Unique grease lubricated ball bearing canned motor pump |
| 01/29/1991 | US4987913 Apparatus and method for controlling operation of storm sewage pump |
| 01/17/1991 | DE3923027A1 Pump speed adjustment device for central heating installation - has differential pressure switch in parallel with manometer for instigating alarm and shut-down |
| 01/15/1991 | US4985181 Centrifugal pump especially for aquariums |
| 01/09/1991 | EP0407316A1 Rotary pump with electrical drive |
| 01/08/1991 | CA2020585A1 Rotary pump with electric drive |
| 01/02/1991 | CA1278462C Bidirectional pump with diaphragm operated valve for dishwasher |
| 12/27/1990 | EP0403806A1 Centrifugal pump or fan |
| 12/25/1990 | US4979880 Apparatus for pumping well effluents |
| 12/13/1990 | WO1990015252A1 Low pressure recirculation valve |
| 12/13/1990 | WO1990015251A1 A method and apparatus for controlling the operation of a centrifugal pump |
| 12/05/1990 | CN2066909U Automatic water pump for pipe line |
| 11/30/1990 | CA2016448A1 Low pressure recirculation valve |
| 11/28/1990 | CN2066519U Electricity saver for multifunctional water pump, fan set |
| 11/15/1990 | WO1990013460A1 Double-acting pump, in particular for windscreen wiper systems in motor vehicles |
| 11/15/1990 | DE4014720A1 Centrifugal pump with outlet on final stage - has additional outlet on intermediate stage, that allows alternative pumping conditions |
| 11/08/1990 | DE3914342A1 Centrifugal pumping plant with electronic characteristic setting - secures redn. of speed and power as vol. flow increases from zero throughout range of control |
| 11/06/1990 | US4967783 Recirculation valve with pilot valve |
| 10/30/1990 | US4966534 Sump draining apparatus |
| 10/24/1990 | EP0394140A1 Fluid circulation and distribution apparatus |
| 10/03/1990 | EP0390627A1 Motor-pump unit with pressure and flow sensors |