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| Number | Title | Issue Date |
| 8047806 | Jet well pump An improved jet well pump includes a centrifugal pump assembly that is a stamping-welding one and a jet pump assembly. The centrifugal pump assembly includes a pump body and a pump cover, an impeller and a shaft that are disposed in the pump body, it also includes a... | 11/01/2011 |
| 7222675 | Downhole draw down pump and method An apparatus and method for drawing down a fluid level in a wellbore which has a first tubular disposed within the wellbore so that a wellbore annulus is formed. The apparatus further includes an annular nozzle operatively attached to the first tubular, and wherein ... | 05/29/2007 |
| 7073597 | Downhole draw down pump and method An apparatus and method for drawing down a fluid level in a wellbore which has a first tubular disposed within the wellbore so that a wellbore annulus is formed. The apparatus further includes an annular nozzle operatively attached to the first tubular, and wherein ... | 07/11/2006 |
| 7066153 | Jet pump with improved start-up properties and fuel delivery system equipped with such jet pump The present invention relates to a jet pump having a first inlet duct, a second inlet duct and an outlet duct having an outlet end, wherein the ducts are in fluid communication with each other at a central volume portion. The jet pump also includes a sleeve formed w... | 06/27/2006 |
| 7007452 | Fuel system for a gas turbine engine A system for automatically transferring the fuel from one or more engine fuel manifolds directly to the engine fuel tank(s) during engine shutdown using an ejector pump has been presented. A checkvalve, which may be integrated with the ejector pump, is also used. A ... | 03/07/2006 |
| 6942463 | Combination water pump/air compressor system A combination water pump/air compressor system for performing two separate functions with one unit by providing compressed air and water. The combination water pump/air compressor system includes a piping configuration including a main pipe capable of carrying a com... | 09/13/2005 |
| 6880569 | Fuel supplying apparatus A fuel supplying apparatus for use with a main fuel tank and an engine includes a fuel discharge pipe for supplying fuel to the engine, a sub-tank disposed in the main fuel tank, a fuel pump for pressurizing fuel and a jet pump. The jet pump includes a throat and a ... | 04/19/2005 |
| 6877961 | Vane pump with a bypass valve and passage arrangement for equalizing excess fluid flow through dual suction passages In a housing of a pump apparatus having a flow control valve to discharge a part of excess fluid in a deviated slanting way to a bypass pass 11, a pair of suction paths 19, 19′ is formed opposite to end portions 119, 119′ of the bypass path ... | 04/12/2005 |
| 5979478 | Apparatus and method for treating water in a water supply system Apparatus for delivering a water treatment chemical to a water intake in a water system is disclosed. The water system has a water inlet and a pump for withdrawing water from a natural body of water, such as an underground aquifer, a river, a lake or the ... | 11/09/1999 |
| 5967760 | Jet pump with filter for washing machines A clog resistant pump for washwater employs two water flow circuits. The first powered by a conventional motor-driven pump uses filtered washwater and drives a jet-pump discharging unfiltered washwater from the washing machine. The intake or discharged wa... | 10/19/1999 |
| 5797421 | Dry hydrant siphon assembly A siphon jet is attached to a dry hydrant which is in communication with a body of water to increase the flow of fluid to the dry hydrant and assist in overcoming the effects of atmospheric pressure and gravity in drawing the water. A pressurized fluid so... | 08/25/1998 |
| 5743239 | Fuel pump control system for vehicle In a fuel supply system for a vehicle, provided with a fuel tank having a bottom wall having an upward convex portion dividing an interior space of the fuel tank into a first chamber and a second chamber, a discharge rate of an electric fuel pump is contr... | 04/28/1998 |
| 5560195 | Gas turbine inlet heating system using jet blower An inlet air heating system for a gas turbine comprising a main air inlet; ducting leading from the main inlet to an inlet of the gas turbine; a manifold located adjacent the inlet for feeding intermediate temperature air into the ducting; a conduit conne... | 10/01/1996 |
| 5474418 | Self-priming centrifugal pump A self priming pump having a pump housing including a suction passage and a discharge passage. A pump chamber with an inlet and an outlet is also provided in the pump housing. A pump impeller is arranged in the pump chamber and has a suction opening oppos... | 12/12/1995 |
| 5458467 | Jet pump and method of operation thereof A pump (10) for providing water from a source to a remote location includes a casing (11) which receives the water through an inlet port (22) which is provided to the remote location through a discharge port (20). An impeller (30) in the casing (11) is ro... | 10/17/1995 |
| 5454532 | Aircraft deicer pumping system In an aircraft deicer comprising a reservoir and a pump connected to the reservoir through a first conduit, the pump operating to circulate a fluid contained within the reservoir throughout at least a portion of the deicer, the improvement comprising: a j... | 10/03/1995 |
| 5147530 | Well water removal and treatment system The well water removal and treatment system of the present invention includes a pumping and well water withdrawl loop consisting of an above ground pump, a pressurized water drive line from the pump outlet to a well water ejector, a water return line from... | 09/15/1992 |
| 5123810 | Power transmission A hydraulic fluid pump for aircraft turbine engine fuel delivery systems comprises a housing having a pump drive shaft mounted for rotation therewithin. A centrifugal pump stage includes an impeller coupled to the drive shaft and having a circumferential ... | 06/23/1992 |
| 5088896 | Jet pump with rotatable venturi cartridge A jet pump having a rotatable venturi cartridge to permit any of several different sized venturi tubes to be aligned with a nozzle in the pump casing. A knob is provided on the pump casing to permit convenient rotation of the venturi cartridge. Printed in... | 02/18/1992 |
| 5051065 | Power transmission A rotary hydraulic vane pump includes a rotor mounted within a housing, with a plurality of vanes individually slidably disposed in corresponding slots in the rotor periphery. A cam ring surrounds the rotor within the housing and has a radially inwardly f... | 09/24/1991 |
| 4911134 | Arrangement for ejecting fuel in a vehicle fuel tank An ejector in the fuel tank for transferring liquid fuel from the fuel tank to a fuel chamber in the fuel tank. The ejector comprises a housing with an inlet opening from the fuel tank laterally into the housing. An inlet channel for surplus engine fuel c... | 03/27/1990 |
| 4799863 | Vacuum flow device A vacuum device comprising a by-pass fan pump, a conduit connecting the inlet of the pump to a member in which pressure is to be reduced and a flow passage formation enabling a stream of air to enter the pump and to by-pass the member. In a preferred embo... | 01/24/1989 |
| 4791688 | Jet pump macerator pump sewage handling system A jet pump macerator pump sewage handling system which provides a unique waste control system for use in mobile units such as passenger trains and ships in which multiple toilets are connected to a transfer manifold pipe which communicates with a non-clog... | 12/20/1988 |
| 4704070 | Fuel system bubble dissipation device A fuel system bubble dissipation device wherein fuel is delivered through a fuel line from a fuel tank to an engine. The device includes an ejector having a casing with a fuel flow passage connected into the fuel line and a nozzle extending into said fuel... | 11/03/1987 |
| 4505645 | Process and installation for rapidly creating a high vacuum using a single stage liquid ring pump An installation for rapidly obtaining a high vacuum, comprising two compression stages, the first of which is a liquid ring vacuum pump, characterized in that means are provided for instantaneously coupling or dissociating the first stage and the second s... | 03/19/1985 |
| 4381175 | Jet electric pump A pump assembly for limited production wells comprises an electric motor driven centrifugal pump having a controlled amount of recirculation through a jet pump. The recirculated fluid is the power fluid for the jet pump, which aspirates production fluid. ... | 04/26/1983 |
| 4362474 | Centrifugal fuel pump with automatically switched jet injection A centrifugal pump for pumping fuel to a gas turbine engine is equipped with a start injector and a run injector. The pump has a single fuel output nozzle from which fuel goes to the engine. It also has several other nozzles from which fuel goes to the st... | 12/07/1982 |
| 4249864 | Centrifugal pump system for water desalinization A centrifugal pump for producing a vacuum, the pump recirculating fluid through a vacuum chamber into which a vacuum line opens, the flow of water across the chamber carrying air or gas therewith to produce the required vacuum.... | 02/10/1981 |
| 4183713 | Pitot pump with jet pump operated thrust balance This pitot pump is provided with pressure balancing for minimizing thrust loads on its bearings. The pump has a housing containing a rotatable casing mounted on a shaft. A fixed pitot tube is mounted in the casing for withdrawing pressurized fluid as the ... | 01/15/1980 |
| 4182117 | Diffuser vane cusp bleed aperture with automatic ejector control device In a gas turbine engine an auxiliary airflow is provided to power accessories. This auxiliary airflow is obtained from a bleed aperture which is constructed immediately downstream of a diffuser vane in a cusp which is formed in the trailing edge of the va... | 01/08/1980 |
| 4037991 | Fluid-flow assisting devices An inlet line connected to the inlet of a hydraulic pump includes a jet pump having a Venturi nozzle though which the aspired liquid is passed, and into which a coaxial jet of liquid under higher pressure is introduced to raise, by jet-pump action, the pr... | 07/26/1977 |
| 3941510 | Artificial lift for oil wells An apparatus for retrieving oil from a producing zone after the bottom hole pressure has decreased to such an extent that artificial lift is required for production. An accumulator is provided by casing sealed off with a packer, or an accumulation chamber... | 03/02/1976 |
