| Patents for F04D 9 - Priming; Preventing vapour lock (1,858) |
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| 05/30/1989 | US4834621 Air throttling valve for submerged pump system |
| 05/10/1989 | CN2037404U Non-bottom valve working unit for pump |
| 05/03/1989 | DE3735929A1 Fuel supply system |
| 04/18/1989 | US4822258 In-tank fuel pump |
| 04/11/1989 | US4820131 Venturi nozzle assembly construction in a shallow well pump casing |
| 03/28/1989 | US4815932 Priming device for normally priming centrifugal pumps |
| 02/28/1989 | US4808081 Hose air purging, pump anti-depriming method and apparatus |
| 02/28/1989 | US4808066 Device for conveying fuel from a supply tank to internal combustion engine |
| 02/14/1989 | US4804313 Side channel self priming fuel pump having reservoir |
| 02/02/1989 | DE3724684A1 Apparatus for separating off air |
| 02/01/1989 | CN1030815A Centrifugal pump for handling danger liquid particularly adapted for automatic full liquid priming of radioactive liquid |
| 01/11/1989 | EP0298949A2 Combined fluidizing and vacuum pump |
| 01/11/1989 | EP0298637A2 Rotary pump system |
| 01/11/1989 | EP0298442A2 A pump and a method of separating gas by such from a fluid to be pumped |
| 12/28/1988 | EP0296952A1 Selfpriming centrifugal pump for dangerous liquids particularly radio-active liquids |
| 12/27/1988 | US4793766 Regenerative fuel pump having means for removing fuel vapor |
| 12/07/1988 | EP0294064A1 Centrifugal pump system with inlet reservoir |
| 11/29/1988 | US4787816 Rotary pump |
| 11/01/1988 | US4781529 Hydraulic pumping system |
| 10/25/1988 | US4780050 Self-priming pump system |
| 10/19/1988 | EP0286954A2 Self-priming centrifugal pump |
| 10/12/1988 | CN87212169U Energy-saving double-volute self-priming pump |
| 10/11/1988 | US4776758 Combined fluidizing and vacuum pump |
| 10/04/1988 | US4775292 Pump comprising a gas separator |
| 09/28/1988 | EP0283780A2 Side channel self priming fuel pump having reservoir |
| 09/14/1988 | CN87215868U Liquid pumping device without bottom valve |
| 09/14/1988 | CN87205264U Self hang type bottomless valve centrifugal pump |
| 09/13/1988 | US4770604 Pulp centrifugal pump |
| 08/30/1988 | US4767281 Centrifugal pump system with inlet reservoir |
| 08/18/1988 | DE3703434A1 Centrifugal pump with vent chamber - has passage with side outlet enclosing outlet to rotor |
| 07/26/1988 | CA1239681A1 Method for control of the function of a centrifugal pump |
| 05/17/1988 | US4744722 Method and apparatus for the mixing of liquid or gas into pulp stock |
| 03/29/1988 | US4734008 Pump impeller |
| 03/23/1988 | CN87200692U 节能抽水装置 Energy-pumping device |
| 03/10/1988 | DE3718273A1 Separating device |
| 02/23/1988 | US4726734 Centrifugal pump |
| 11/25/1987 | EP0246782A2 Self-priming liquid ring pump methods and apparatus |
| 10/20/1987 | US4700680 For an engine |
| 10/01/1987 | DE3709716A1 Ships engine cooling water pump |
| 09/08/1987 | US4692092 Fuel pump apparatus for internal combustion engine |
| 08/26/1987 | EP0233859A1 Self-priming centrifugal pump for handling liquids mixed with a high fiber content |
| 08/04/1987 | US4684333 Self-priming pump |
| 07/22/1987 | CN86209861U Gyromagnetic corrosion-proof alloy self-suction centrifugal pump |
| 07/14/1987 | US4679987 Self-priming liquid ring pump methods and apparatus |
| 07/07/1987 | US4678409 Multiple magnetic pump system |
| 06/16/1987 | US4673333 Fuel supply pump |
| 06/16/1987 | US4673330 Method for control of the function of a centrifugal pump |
| 05/14/1987 | DE3540260A1 Unit for feeding fuel from a storage tank to an internal combustion engine |
| 04/29/1987 | CN86205058U Corrosion resistant self-sucking pump |
| 04/15/1987 | CN85102434A Valueless mediumless self-aspirating universal pump |
| 03/31/1987 | US4653979 Arrangement for feeding fuel from supply tank to internal combustion engine of power vehicle |
| 03/26/1987 | DE3539883A1 Self-priming centrifugal pump |
| 01/31/1987 | CN86102582A Method and device for keeping vacuum in suction duct of water pump |
| 01/20/1987 | US4637778 Self-priming diffuser type centrifugal pump |
| 12/17/1986 | EP0201377A1 Self-priming pump with hydroinjector |
| 12/09/1986 | US4627792 Rotating flow pump with a feed pump unit formed as an ejector |
| 11/25/1986 | US4624627 Self-priming pump |
| 11/18/1986 | US4623302 Arrangement for facilitating the start-up of not self-priming centrifugal pumps |
| 10/07/1986 | US4615844 Water distribution system |
| 09/30/1986 | US4614480 Liquid pumping system |
| 08/20/1986 | EP0191040A1 Hose air purging, pump antidepriming method and apparatus |
| 08/19/1986 | US4606704 Well point system and apparatus |
| 08/06/1986 | CN85202299U High efficiency self-sucking pump without bottom valve |
| 06/18/1986 | EP0184703A1 Multiple magnetic pump system |
| 05/27/1986 | US4591311 Fuel pump for an automotive vehicle having a vapor discharge port |
| 04/09/1986 | CN85200534U Axially suck self-priming cenerifugal pump with oil sealing means |
| 03/18/1986 | US4576197 Pump suction vacuum lift vortex control |
| 02/13/1986 | WO1986000951A1 Hose air purging, pump antidepriming method and apparatus |
| 01/28/1986 | CA1199880A1 Apparatus for transfer of liquid and for removal of gases separating from liquids |
| 01/21/1986 | US4565489 Self-priming centrifugal pump |
| 10/22/1985 | US4548545 Centrifugal pump with deaeration chamber |
| 10/08/1985 | CA1194904A1 Suction transfer device for liquids |
| 09/03/1985 | US4538958 Fuel pump having regenerative section provided with vent housing for voltex flow |
| 06/18/1985 | US4523900 Impeller pump with self-priming column attachment |
| 05/07/1985 | US4515517 Well point system and apparatus |
| 05/07/1985 | US4515180 Valve for self-priming pump system |
| 01/15/1985 | US4493607 Tee-type valve for self-priming pump system |
| 11/13/1984 | CA1177938A1 Heavy duty electric pump control unit |
| 11/06/1984 | US4481020 Liquid-gas separator apparatus |
| 07/24/1984 | US4461632 Apparatus for transfer of liquid and for removal of gases separating from liquids |
| 06/05/1984 | CA1168574A1 Anti-gas locking apparatus |
| 05/08/1984 | US4447189 Centrifugal pump for moving gaseous liquids |
| 04/25/1984 | EP0105997A1 Process and device for the transfer of liquids by suction |
| 04/17/1984 | CA1165624A1 Self-priming centrifugal pump, in particular for conveying liquids in the vicinity of their boiling point |
| 11/22/1983 | USRE31445 Submerged pumping system |
| 11/08/1983 | US4414006 Air separation for an oil pump |
| 10/11/1983 | US4408953 High efficiency centrifugal pump |
| 08/30/1983 | US4401412 Heavy duty electric pump control unit |
| 08/30/1983 | US4401409 Self-priming centrifugal pump |
| 06/28/1983 | US4390317 Self-priming centrifugal pump, in particular for conveying liquids in the vicinity of their boiling point |
| 06/07/1983 | US4386653 Anti-gas locking apparatus |
| 03/30/1983 | EP0075100A1 Multistage centrifugal pump |
| 11/23/1982 | CA1135994A1 Self-priming centrifugal pump |
| 10/26/1982 | US4355950 Self-priming centrifugal pump |
| 10/05/1982 | US4352683 Apparatus for venting and deaerating from a liquid circuit |
| 09/21/1982 | CA1131991A1 Axial or screw centrifugal impeller pump, with an additional suction axial impeller mounted on the drive shaft |
| 07/20/1982 | US4340340 Vacuum system |
| 07/06/1982 | US4337830 Pump assembly |
| 06/22/1982 | US4336002 Two stage pump having an electromotor device |
| 02/10/1982 | EP0045483A2 Self-priming rotary pump, particularly for bringing liquids to their boiling point |