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| Number | Title | Issue Date |
| 7997878 | Dense phase powder pump with single ended flow and purge A dense phase pump for particulate material includes a pump chamber wherein material flows into the pump chamber under negative pressure and flows out of the pump chamber under positive pressure. A plurality of pinch valves are provided to control flow of material i... | 08/16/2011 |
| 7438080 | System and method for dewatering an area A system and method for dewatering an area in which a catch basin is situated within the area to collect water and conduit conveys the collected water to an elongated discharge chamber having a muzzle at a distal end in communication with a desired outfall body and ... | 10/21/2008 |
| 7367366 | Pumping device A pumping device includes a container having a cover structure. A piston is movably received in the container and is manually operable. The cover structure has an air inlet valve and a slide switch, which, when properly set, allow air to be sucked into or expelled o... | 05/06/2008 |
| 7367401 | Ported velocity tube for gas lift operations An apparatus for use with a packer set within a well bore comprises a first flow path providing fluid communication between the well bore above the packer and the well bore below the packer, and a second flow path. A system for gas lifting fluids from a well bore wi... | 05/06/2008 |
| 7341108 | Well downhole liquid dispenser A well downhole liquid dispenser is disclosed in which an inlet/discharge port assembly is provided having an inlet port in fluid communication with the shoulders of a conical piston. The point of the conical piston is in physical contact with the discharge channel ... | 03/11/2008 |
| 7322410 | Controllable production well packer An apparatus and method for operating an electrically powered device in a packer using the piping structure of the well as an electrical conductor for providing power and/or communications. The electrically powered device may comprise an electrically controllable va... | 01/29/2008 |
| 7259688 | Wireless reservoir production control A reservoir production control system includes a plurality of wells for producing a reservoir linked to a central computer over a downhole communication network and a surface communication network. Both the downhole and the surface communication networks are wireles... | 08/21/2007 |
| 7170424 | Oil well casting electrical power pick-off points A power supply apparatus is provided for supplying power and communications within a first piping structure. An external power transfer device is positioned around the first piping structure and is magnetically coupled to an internal power transfer device. The inter... | 01/30/2007 |
| 7114561 | Wireless communication using well casing A petroleum well having a borehole extending into a formation is provided. A piping structure is positioned within the borehole, and an induction choke is positioned around the piping structure downhole. A communication system is provided along the piping structure ... | 10/03/2006 |
| 7104290 | Joint for a fluid pumping apparatus A joint for a fluid pumping apparatus includes a body having a passage defined in the body and extending through the body. A through hole is longitudinally defined in the body and extends through the body. A container is mounted to a lower end of the body, and the p... | 09/12/2006 |
| 7073594 | Wireless downhole well interval inflow and injection control An apparatus and methods of electrically controlling downhole well interval inflow and/or injection. The downhole controllable well section having a communications and control module, a sensor, an electrically controllable valve and an induction choke. The electrica... | 07/11/2006 |
| 7075454 | Power generation using batteries with reconfigurable discharge A petroleum well for producing petroleum products that incorporates a system adapted to provide power to a downhole device in the well. The system includes a current impedance device and a downhole power storage device. The current impedance device is positioned suc... | 07/11/2006 |
| 6857859 | Gasket for jet pump assembly of a fuel supply unit A fuel supply unit 10 includes a fuel reservoir 22 for holding fuel, a fuel pump 18 within the reservoir for pumping fuel from the reservoir, a jet pump assembly 16 within the reservoir for drawing fuel from a fuel tank into the reservoir... | 02/22/2005 |
| 5312231 | Slurry conveyor device The objects of the invention are to prevent the backflow of slurry by first enclosing it in a closed space and then using air to force it along a discharge channel, and at the same time to ensure the smooth throughput of the slurry by causing any foreign ... | 05/17/1994 |
| 5183391 | Valve pump To provide smoother operation of a gas-operated purge pump, the pump housing receives a standpipe closed by a low-density, floatable check valve element at the inlet of a standpipe within the housing. Periodically, at timed intervals, air is forced throug... | 02/02/1993 |
| 5161956 | Valve pump To provide smoother operation of a gas-operated purge pump, the pump housing receives a standpipe closed by a low-density, floatable check valve element at the inlet of a standpipe within the housing. Periodically, at timed intervals, air is forced throug... | 11/10/1992 |
| 5085561 | Gas removal pump for liquid A gas removable pump for liquid comprising a housing having an inlet for introducing the liquid thereinto and an outlet for feeding the liquid therefrom, a drive shaft extending into the housing and having formed therein an axial bore, a rotary pump dispo... | 02/04/1992 |
| 4964784 | Volumetric dosing apparatus A system for dispensing a liquid, which may be corrosive, in an amount which is substantially fixed for each cycle of operation includes an airtight measuring vessel with an inlet conduit through which liquid is introduced unidirectionally and an outlet o... | 10/23/1990 |
| 4917576 | Method and apparatus for conveying a liquid In a method for conveying a liquid at or in the proximity of its boiling temperature, in particular, liquid hydrogen, by means of a pump which draws the liquid from a storage container through a suction entrance port, in order to prevent undesired bubble ... | 04/17/1990 |
| 4701107 | Two stage pump sampler A bladder pump is suspended in a tubular air lift pump housing which is closed at its lower end by a check valve, and which is connected at its upper end by a first conduit and a separator selectively to a supply of air under pressure. Two additional cond... | 10/20/1987 |
| 4606703 | Fluidic pumping systems with control means responsive to liquid level A fluidic pumping system comprises a reverse flow diverter positioned below the level of a liquid to be pumped and inserted between a charge vessel and a delivery pipe. A control system including pressure-responsive devices effects alternate pressurizing ... | 08/19/1986 |
| 4545731 | Method and apparatus for producing a well A system and method for producing earth formation fluids such as crude oil using a lighter oil to force the crude oil to the surface and thereafter removing the lighter oil by gas lift techniques. The well system includes spaced packers defining a product... | 10/08/1985 |
| 4521162 | Pumping system A fluidic pumping system comprises a reverse flow diverter positioned below the level of a liquid to be pumped and inserted between a charge vessel and a delivery pipe. Control means including signal generating means, conveniently an ultrasonic transducer... | 06/04/1985 |
| 4462760 | Method and apparatus for metering liquids A method and apparatus for delivering metered quantities of liquid wherein the liquid is circulated through a chamber to fill the chamber with liquid and circulation is temporarily terminated with the chamber filled with liquid. While circulation is termi... | 07/31/1984 |
| 4239054 | Water pressurizing installation A water pressurizing system for use where water pressure from the main is too low. A tank has an inlet for water with a check valve and a discharge outlet for consumption. A gas supply is provided for pressurizing the tank. In the gas supply line there is... | 12/16/1980 |
| 4021146 | Fluidic flow control devices and pumping systems A fluidic flow control device comprising at least two generally aligned members having tapering bores therethrough, the members being so arranged as to constitute a convergence followed by a gradual divergence, separated by a gap, the gap communicating wi... | 05/03/1977 |
| 3941511 | 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 positioned in the area of the casing where oil accumulates with the upp... | 03/02/1976 |
| 3941509 | Pumping system Liquid is pumped from a relatively small submerged tank in pumping cycles by discharging a gas at relatively high pressure from a relatively large tank into the submerged tank. When the submerged tank is emptied of liquid, the high pressure gas which fill... | 03/02/1976 |
