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| Number | Title | Issue Date |
| 7322801 | Compact linear air pump and valve package A compact air pump and valve package includes pump and valve assemblies integral with a pressure housing defining inlet ports and a plurality of fittings for connecting air lines to an interior of the pressure housing. The linear diaphragm pump assembly has a perman... | 01/29/2008 |
| 6926584 | Dual mode hybrid control and method for CMP slurry A DMHC (dual mode hybrid control) system and method which facilitates enhanced control in the delivery of polishing slurry to a CMP (chemical mechanical polishing) apparatus. The DMHC comprises a linear table and a PID (proportional integrated differential) controll... | 08/09/2005 |
| 6827146 | Double bellows gas lift valve “faustoval” The phase of this process is done by the functionality of the perforated lower stem, which due to the fact that its internal conduit is able to connect the lower bellow in an alternated way, first to the tubing and after, to the casing. This is possible due to the f... | 12/07/2004 |
| 6508310 | Bladder-type sampling pump controller A method for using a controller to control a fluid pump by controlling the rate at which the pump fills with fluid and subsequently discharges fluid. The pump includes a chamber for collecting fluid from within a well bore in which the pump is disposed. A... | 01/21/2003 |
| 6413053 | Apparatus and method for moving fluid A method of supplying water from a well is provided. The method includes the following steps. First, a supply apparatus is provided that includes a container having first and second ends and a first chamber extending to a first opening in the second end. ... | 07/02/2002 |
| 6371145 | System and method for compressing a fluid A fluid pressurizing system and method according to which a fluid at a low pressure is compressed by fluid to increase its pressure to enable it to be discharged from the system and to an external delivery point.... | 04/16/2002 |
| 6352109 | Method and apparatus for gas lift system for oil and gas wells An intermittent gas lift well pumping system containing an accumulator, a gas line, a liquid discharge line, and a battery operated controller. By using one or more constrictions in the gas line and acoustical techniques, accurate liquid level is determin... | 03/05/2002 |
| 6224345 | pressure/vacuum generator A pressure/vacuum generator is established by coupling the pressure port of a vacuum generator to an air pressure source while coupling a valve in fluid communication with the exhaust port of the vacuum generator. When the valve is in a normally open cond... | 05/01/2001 |
| 6200104 | Automatic pneumatic pump system An automatic pneumatic pump system includes a fluid reservoir, at least one fluid tank connected to the reservoir through an inlet conduit and discharge fluid through an outlet conduit, a pressure sensing unit mounted on each fluid tank and containing a h... | 03/13/2001 |
| 6058958 | Pulsatile flow system and method The present invention relates to a pulsatile flow system and method. The pulsatile flow system includes a reservoir, a pressure riser and a first fluid passage connected between the reservoir and the pressure riser. The system further includes a device ad... | 05/09/2000 |
| 6009892 | Device for disposal of liquid media A device for disposal of liquid media such as coolant and lubricant fluids, containing production residues, such as chips from industrial processes in which these media are conveyed from at least one accumulation site through gutters and/or pipes to a rec... | 01/04/2000 |
| 5749711 | Automatic pneumatic pump including a tank with inlet and outlet and a pump connected to the inlet An automatic pneumatic pump preferably used with a waste water disposal system is disclosed. The pump forcibly introduces sludge-laden liquid into a tank (30) and in turn feeds the liquid to a filter unit (F) for filtering off the sludge. The pump has one... | 05/12/1998 |
| 5715856 | Liquid flow control apparatus A liquid flow control apparatus (5) suitable for handling milk from a milking machine, comprising a first chamber (10) that comprises an inlet (11) for the milk, an outlet (12) for connecting to a vacuum pump, and an outlet (14) for the milk to flow by gr... | 02/10/1998 |
| 5451144 | Air-operated pump An air-operated pump includes a pair of poppet valves affixed to a vertical valve shaft and arranged so that the upper valve is closed when the lower valve is open, and vice versa. When a connected displacer is immersed in tank fluid, its buoyancy in comb... | 09/19/1995 |
| 5301749 | Dual pump floating layer recovery apparatus There is provided a dual pump floating layer recovery apparatus for pumping a floating layer of contaminant out of a well. The apparatus comprises an upper pump and a lower pump. The lower pump creates a cone of depression which increases the amount of th... | 04/12/1994 |
| 5186611 | Pump arrangement for pumping liquid by means of compressed air A pump arrangement that has a pump chamber with an inlet opening and a discharge opening. A discharge pipe is connected to the outlet opening to carry liquid, etc., from the pump chamber. An inlet pipe is connected to the inlet opening and extends downwar... | 02/16/1993 |
| 5141404 | Pump apparatus A pump apparatus for pumping undergound fluids from a well. The pump includes inner and outer chambers, and a float slidable within the outer chamber. A source of compressed air is directed to a valve on the pump. The valve controls the flow of the compre... | 08/25/1992 |
| 5078579 | Side entry fish pump A wet pump for pumping fish from a first fish receptacle to a second receptacle displaced from the first receptacle. The wet pump includes a wet pump tank into which the fish are initially pumped, a pump suction line connected to the side of the tank and ... | 01/07/1992 |
| 5074758 | Slurry pump A pump for liquid or slurry is valve controlled to fill a pumping chamber to an upper predetermined level; valve controlled to supply gas under pressure to the top of the liquid to force it out a lower outlet port down to a lower predetermined level and t... | 12/24/1991 |
| 5046925 | Gas piston liquid flow controller A gas piston liquid flow controller comprising a pumping chamber of fixed volume, means to separately introduce into said chamber pressurized gas and liquid, means to detect the presence of liquid at predetermined upper and lower levels in said chamber, m... | 09/10/1991 |
| 5006046 | Method and apparatus for pumping liquid from a well using wellbore pressurized gas There is provided a method and apparatus for removing liquid from a well using well bore pressurized gas. A U-shaped tube having a small orifice near the bottom thereof is received in the well. The upper portions of both legs of the tube are connected to ... | 04/09/1991 |
| 4842487 | Pumping device using pressurized gas There is provided an improved fluid pumping device including an enclosure to be placed downhole in a well. A first hollow tube is received in the enclosure and extends to the surface of the well for removing fluid from the well. A second hollow tube also ... | 06/27/1989 |
| 4828461 | Apparatus for metering flowable materials in sand core making machines Apparatus for transferring metered quantities of a flowable bonding agent from a tank into a mixer of a sand core making machine has an upright tubular vessel into which the bonding agent is drawn from the tank by a suction pump and a pressure pump which ... | 05/09/1989 |
| 4826406 | Pressure extraction pump system for recovering liquid hydrocarbons from ground water There is disclosed a pressure extraction pump system for recovering liquid hydrocarbons from contaminated ground water collected in a well. The pump system includes a pump with a pump vessel and an open top sleeve extending above the pump vessel for skimm... | 05/02/1989 |
| 4773830 | Control apparatus for a gas driven pump A gas driven pump (102) is controlled by an asynchronous controller (101). The controller (101) has two control conduits (105,103) respectively in communication with the bottom and top regions of the chamber of the pump (102). Low pressure air is bubbled ... | 09/27/1988 |
| 4761225 | Apparatus for controlling the removal of liquid hydrocarbons from groundwater An apparatus for controlling the removal of liquid hydrocarbons from ground water in perforated well casings consists of a plurality of pump chambers and a control system which is powered by compressed air. The pump chambers are positioned above a liquid ... | 08/02/1988 |
| 4725202 | Gas-operated pump A pump comprising an elongated housing adapted to be positioned in a landfill gas well. The housing has a peripheral wall, an interior chamber and apertures in the peripheral wall leading from the exterior of the housing to the chamber so that liquid can ... | 02/16/1988 |
| 4671742 | Water supply system, energy conversion system and their combination Water supply system comprising a unit for converting the wind energy into kinetic energy, a unit for converting the kinetic energy into another usable form of energy and a unit for supplying water driven by that usable form of energy. According to the imp... | 06/09/1987 |
| 4625807 | Method and apparatus for recovery of water-immiscible liquids from water-bearing formations Ground water pollutant floating above the water table in a water-bearing formation is removed through a well penetrating the formation by lowering the water level so that pollutant from the region surrounding the well will flow into the well due to gravit... | 12/02/1986 |
| 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 |
| 4524801 | Apparatus for the selection, metering and delivery of liquids, in particular treatment liquids for industrial laundry washers A device for the selection, metering and delivery of treatment liquids for industrial laundry washers comprising a plurality of pumping units without positive displacement of pumping members. The pumping action is performed by a correlated combination of ... | 06/25/1985 |
| 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 |
| 4439110 | Controlling and regulating device for pumps with constant volume A device for controlling the performance of pumps, having a constant volume such as pneumatic pumps having a constant volume, comprises liquid level detectors, such as magnetic microswitches that cooperate with a magnetized float, and the detectors are ad... | 03/27/1984 |
| 4407637 | Solar powered liquid metering device A solar powered liquid metering device is disclosed including a solar chamber sealed from atmospheric pressure and partialy filled with a liquid to be metered. Trapped within the device above the liquid is an expansible gas. Also included is an overflow c... | 10/04/1983 |
| 4332530 | Pressurized air pumping apparatus A pressurized air pumping apparatus for pumping for example drilling mud and like viscous or slurry materials comprises a fluid receiving sump tank having an upper inflow opening and a valve seat at the opening. A discharge conduit at the lowermost portio... | 06/01/1982 |
| 4321017 | Pneumatic ejector control For starting and stopping air injection, a pneumatic ejector for a liquid transport system typified by a municipal sewerage system is provided with an air release valve fitted with a limit switch as a control device.... | 03/23/1982 |
| 4307525 | Pneumatic-hydraulic pump dredge An efficient dredging device is disclosed, which includes a submersible pump having one or more chambers. Each chamber defines an air port through which air can be delivered to and exhausted from the chamber, and a material discharge port for discharging ... | 12/29/1981 |
| 4304527 | System for pumping an abrasive or corrosive fluid A system for pumping an abrasive or corrosive fluid at high pressure and with a variable delivery rate. The system comprises raising the pressure in a non-corrosive and non-abrasive liquid in a pressure raising means comprising pump means and at least two... | 12/08/1981 |
| 4265599 | Hydropneumatic energy system A system for converting a constant pressure head of water into compressed air which may be utilized to transfer the potential energy of the pressure head to remote work sites.... | 05/05/1981 |
| 4232802 | Apparatus for pulsewise dispensation of very small amounts of liquid, particularly H2 O2 In an apparatus for the pulsewise dispensing of very small amounts of liquid controlled with a measuring instrument comprising an ejecting device for the pulsewise ejection of a desired amount of liquid, a pump is provided for supplying liquid to the vess... | 11/11/1980 |
