| Patents for F04D 15 - Control, e.g. regulation, of pumps, pumping installations, or systems (4,967) |
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| 09/21/1988 | EP0282911A2 Double selectable delivery pump |
| 09/07/1988 | EP0280892A2 Vaccum pump with a device for counting the revolutions |
| 08/31/1988 | EP0279939A1 Method for adjusting the feed volume of a circulation pump |
| 08/30/1988 | CA1241252A1 Non-return device |
| 08/24/1988 | EP0279220A2 Leakage indicating device for a magnetic centrifugal pump |
| 08/09/1988 | US4762461 Leakless pump |
| 07/26/1988 | CA1239681A1 Method for control of the function of a centrifugal pump |
| 06/28/1988 | US4753570 Liquid control structure for controlling delivery of liquid |
| 06/21/1988 | US4752183 Water pump |
| 06/15/1988 | EP0271318A2 Valve arrangement for a bi-directional rotary pump |
| 05/31/1988 | US4747751 Electronic device for the control of a submersible pump |
| 05/25/1988 | EP0268015A2 Canned motor pump or pump with an encased magnetic coupling |
| 05/25/1988 | EP0268013A2 Canned motor pump or pump with an encased magnetic coupling |
| 05/03/1988 | US4741208 Pump differential pressure monitor system |
| 04/27/1988 | EP0265145A2 Hydro-pneumatic pumpsets |
| 04/27/1988 | EP0265107A1 Bidirectional pump with diaphragm operated valve for dishwasher |
| 04/26/1988 | US4740137 Method and apparatus for improving the efficiency of centrifugal pumps |
| 04/21/1988 | WO1988002831A1 Automatic recirculation valve |
| 04/13/1988 | EP0263772A2 Pump differential pressure monitor system |
| 04/07/1988 | DE3632274A1 Hydraulic servo control |
| 03/29/1988 | US4734019 Pumping system |
| 03/01/1988 | US4728260 Direction-selectable sending-out pump |
| 02/25/1988 | DE3628284A1 Process and arrangement for determining the differential pressure of circulating pumps |
| 01/28/1988 | DE3624950A1 Switching device for submersible motor-driven pumps |
| 01/07/1988 | EP0252045A2 Thrust monitoring and balancing apparatus |
| 01/07/1988 | EP0104209B1 Central heating circulation pump for alternating current and system comprising such a pump |
| 12/29/1987 | US4715778 Centrifugal compressor |
| 12/29/1987 | US4715777 Lateral channel supply pump |
| 12/17/1987 | DE3619649A1 Device for switching pumps driven by an electric motor on and off |
| 12/10/1987 | DE3618644A1 By-pass valve |
| 11/25/1987 | EP0246782A2 Self-priming liquid ring pump methods and apparatus |
| 11/24/1987 | US4708587 Centrifugal compressor |
| 10/15/1987 | DE3612389A1 Pump |
| 10/15/1987 | DE3612388A1 Rotary piston pump |
| 10/14/1987 | EP0240777A2 Cooling pump for a motor vehicle internal-combustion engine |
| 10/08/1987 | DE3610984A1 Device for switching on and off electromotively driven pumps |
| 09/30/1987 | CN85101651A Multistage centrifugal pump |
| 09/23/1987 | EP0237868A2 Radial or axial flow centrifugal pump |
| 09/02/1987 | EP0234802A2 Fluid pump |
| 09/02/1987 | EP0110920B1 Device for the control of a fluid pressure of a turbomachine engine |
| 08/26/1987 | EP0233859A1 Self-priming centrifugal pump for handling liquids mixed with a high fiber content |
| 08/26/1987 | EP0233411A1 Leakless pump |
| 07/29/1987 | CN86204878U Rotation control system for electric fan |
| 07/14/1987 | US4679987 Self-priming liquid ring pump methods and apparatus |
| 07/14/1987 | US4679983 Water pump for window washer unit |
| 07/07/1987 | US4678405 Low net positive suction head pumps |
| 07/07/1987 | US4678404 Low volume variable rpm submersible well pump |
| 07/07/1987 | US4678395 Regenerative pump with force equalization |
| 07/01/1987 | EP0226858A1 Method for controlling the lift pressure of a pump |
| 06/25/1987 | DE3545713A1 Split-cage pump for delivering high-strength acids, especially 98% nitric acid |
| 06/16/1987 | US4673330 Method for control of the function of a centrifugal pump |
| 05/27/1987 | EP0223109A1 Centrifugal pump or ventilator |
| 05/12/1987 | US4664185 Freeze proof control center for submersible pumps |
| 05/12/1987 | US4664143 External water tower |
| 04/22/1987 | EP0219360A1 Control device for a water supply installation |
| 03/31/1987 | US4653977 Pump for mixing and pumping liquids |
| 03/17/1987 | US4650633 Method and apparatus for protection of pump systems |
| 03/17/1987 | US4650404 Motor-driven fuel pump |
| 02/24/1987 | US4645433 Sealing shroud centrifugal pump |
| 02/24/1987 | US4645426 Bilge pump |
| 02/04/1987 | CN85202719U Bidirectional valve type eliminator for water hammer |
| 01/29/1987 | DE3525932A1 Fluid kinetic machine and control thereof |
| 01/22/1987 | DE3612976A1 Method and arrangement for diagnosis of the inner seals of multi-step radial flow machines |
| 01/21/1987 | EP0208879A1 Centrifugal pump unit |
| 01/07/1987 | EP0207866A1 Pump starting method by means of a pump functioning as a turbine |
| 01/07/1987 | CN86101484A Method for contralling gas etching |
| 12/17/1986 | CN86101439A Compressor of centrifugal type |
| 12/16/1986 | US4629116 Power saving thermal carrier circulating pump particularly for heat pump heating systems |
| 12/02/1986 | CA1214686A1 Method for regulating the function of a centrifugal pump |
| 11/05/1986 | CN86102901A Centrifugal compressor |
| 10/15/1986 | EP0197064A1 A control system for maintaining the pressure in a closed piping system |
| 10/14/1986 | US4616483 Controlling a motor driven centrifugal compressor used in refrigeration |
| 09/17/1986 | EP0194474A2 Method for regulating cavitation |
| 08/13/1986 | EP0190741A1 Pump-water wheel system |
| 08/12/1986 | CA1209673A1 Compressor |
| 07/29/1986 | CA1208495A1 Rotary fluid handling machine having reduced fluid leakage |
| 07/16/1986 | EP0187645A2 Centrifugal, inline, opposed balance gas blower |
| 07/15/1986 | US4600361 Selectively controlled dual delivery pump, particularly for motor vehicle application |
| 07/08/1986 | US4599050 Device for controlling displacement of variable displacement hydraulic pump |
| 06/17/1986 | US4595342 Device for the control of a fluid pressure of a turbomachine engine and support for a pressure pick-off |
| 03/27/1986 | WO1986001861A1 A control system for maintaining the pressure in a closed piping system |
| 03/18/1986 | US4576552 Air and water volume control apparatus for hydropneumatic tanks |
| 02/19/1986 | EP0171515A1 Centrifugal pump with an isolating tubular air gap cap |
| 02/12/1986 | EP0171094A1 A method of driving the impeller of a liquid pump |
| 02/05/1986 | EP0170175A2 Regenerative pump with force balancing |
| 12/04/1985 | EP0163620A1 Non-return device |
| 10/08/1985 | US4545741 Vertical motor pump |
| 09/25/1985 | EP0155453A2 Testable corrosion resistant pumps |
| 09/17/1985 | CA1193693A1 Dry battery driven liquid pump |
| 09/11/1985 | EP0153951A1 Float switch, particularly for immersion pump systems |
| 09/10/1985 | US4540342 For installation in liquid communication means |
| 09/03/1985 | US4538960 Axial thrust balancing device for pumps |
| 08/21/1985 | EP0152383A1 Pump |
| 08/13/1985 | US4534712 Liquid metal mechanical pump equipped with emergency syphon |
| 07/31/1985 | EP0150068A2 Method and apparatus for controlling different operational parameters for pumps and compressors |
| 07/17/1985 | EP0148343A2 Motor pump unit |
| 06/19/1985 | EP0145672A2 Distributor device for bidirectional pumps |
| 04/16/1985 | US4511312 Method of driving the impeller of a liquid pump by means of a brushless a.c. motor; and a liquid pump for carrying out the method |
| 03/14/1985 | WO1985001087A1 Float switch, particularly for immersion pump systems |
| 03/05/1985 | US4502515 Dry battery driven liquid pump |