Class 417/137 - Cyclic pumping

Subclass of Class 417 - Pumps
Definition: Apparatus wherein the pumping chamber alternately admits
No. of patents: 24
Last issue date: 11/01/2011

Number	Title	Issue Date
8047808	Geyser pump A system pumps liquid. The system includes a compressed air source and a pump for vertically moving the liquid upward. The pump is powered by the compressed air source. The pump includes a first container, a second container disposed interior to the first container,...	11/01/2011
7273026	Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i...	09/25/2007
7194853	Pressurizer for a rocket engine A pump for pressurizing a fluid includes an engine portion including a first pressure vessel, a first piston movable inside the first pressure vessel, at least two pressurant entrance valves connected to the first pressure vessel, and at least two pressurant exit va...	03/27/2007
7021900	Vapor-powered kinetic pump A kinetic pump and method of pumping a liquid comprising providing an acceleration tube for the acceleration of a liquid contained therein by an introduced high-pressure vapor or gas, receiving the liquid from the acceleration tube with a compressed-air surge tank, ...	04/04/2006
7004728	Gas pressure driven fluid pump having an electronic cycle counter and method A gas pressure driven fluid pump having an electronic cycle counter. The pump has a pump tank with a liquid inlet and a liquid outlet. A switching mechanism is operative within the pump tank for switching to exhaust porting when the fluid level within the pump tank ...	02/28/2006
6976497	Pressure-differential liquid raising system Liquid raising systems raise liquid from a system inlet to a system outlet without any moving parts below the system outlet. One or more closed cells are disposed at elevations between the system inlet and outlet. A liquid conduit leads from the bottom of each cell ...	12/20/2005
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
6632073	Air-operated pump with bladder-controlled inlet structure useful in floating-layer separation applications An air-operated, submersible pump features a bladder-controlled inlet applicable to water pumping or fluid separation, including the recovery of viscous hydrocarbon products. The inlet area fluidly penetrates through a portion of the wall of the pump, and...	10/14/2003
6602055	Leachate and depollution pneumatic pump with sleeve valve A pneumatic pumping device for pumping liquids such as landfill leachates and polluted liquids or thick matter includes a tubular body (1) forming a pump body and defining a cylindrical main chamber (2) in the upstream and downstream ends of which respect...	08/05/2003
6450784	Air-operated pumps with removable cartridges and improved manifold attachment mechanisms An air-operated pump for groundwater sampling and other applications includes a removable cartridge coupled to a manifold configured to receive air-inlet and fluid-discharge tubes from an above-ground location. The removable cartridge may be in the form o...	09/17/2002
6296078	Axle bearing lubricating device An axle bearing lubricating device includes a grease storage tank for providing lubricating grease to at least one grease propeller, the grease storage tank having a grease outlet, at least one grease propeller for propelling grease from the grease storag...	10/02/2001
6234761	Apparatus for an air lift and transfer pump A pump having a pump chamber arranged to receive liquid to be pumped and air, a delivery pipe for delivery of the liquid by the air to a location remote from said pump chamber, an air pipe for flow of air therein. The delivery pipe and pump chamber are in...	05/22/2001
6224343	Automated, air-operated bellows pumps for groundwater sampling and other applications An air-operated pump for groundwater sampling features a corrugated bellows as opposed to the traditional bladder used for fluid collection. The preferred embodiment includes an air-supply line and a fluid-discharge line, each coupled to the pump body thr...	05/01/2001
5445500	Method of transferring fluent material with compressed gas A method of transferring fluent material transfers the material from a first pressure tank to a fluent material transfer destination by supplying compressed gas to the first tank through a compressor. The compressed gas is retained in the first tank for r...	08/29/1995
5248243	Pneumatically operated and controlled fluid pump A pneumatically operated and controlled pump which is capable of maintaining its efficiency and reliability in various environments. The pump head contains a spool and sleeve valve assembly operated in response to a signal pressure. The assembly controls ...	09/28/1993
5007803	Air operated vacuum pump A compressed air-actuated pump includes a venturi nozzle to create a vacuum condition within a fluid-tight pump body to pump in a liquid or slurry. When a given level of liquid is pumped in, a control circuit closes a flexible sleeve of a pneumatically ac...	04/16/1991
4990061	Fluid controlled gas lift pump A well pumping system uses a closed gas cycle to periodically unload a pumping chamber in a well. The system includes a tubing string having a downhole pumping chamber providing a check valve at the lower end. A packing assembly defines the upper end of t...	02/05/1991
4860857	Pistonless air powered lubricating system A cyclic lubrication system is pulled by compressed air by way of a timer so that an injector manifold, having a plurality of injector valves, is fed with a lubricant which is gravity fed into the system during the off times of the cyclic air pulsation. E...	08/29/1989
4818187	Fluid exchange pump A fluid pump which uses a motive fluid for pumping liquid or gaseous fluids by use of a fluid inlet, a fluid exchange chamber, and a fluid exhaust means operates as follows: A fluid which is to be pumped is introduced into a fluid exchange chamber. The ex...	04/04/1989
4684295	Intermittently operating pneumatic device for pumping solid-carrying liquids and slurries The pneumatic device for pumping a solid-carrying liquid or slurry, which operates intermittently and is continuously under load, comprises a tubular body (1) in which a flap valve (12) is mounted so that it pivots in the downstream direction on a support...	08/04/1987
4649994	Installation for bringing hydrocarbon deposits into production with reinjection of effluents into the deposit or into the well or wells An installation is provided for bringing into production hydrocarbon deposits with reinjection of effluents into the deposit or into the well or wells and a process for using this installation. Said installation comprises at least one sealed casing whose ...	03/17/1987
4589494	Method of controlling the removal of flowable material from a well A method of controlling the removal of flowable material from a well using a pump in the well which includes a housing having at least one aperture leading to an interior chamber within the housing so that flowable material from the well can enter the cha...	05/20/1986
4471795	Contamination free method and apparatus for transfer of pressure energy between fluids A means and apparatus for transfer of pressure energy from a first fluid at high pressure to a second fluid at lower pressure via a piston mounted for free floating movement within a cylinder communicating on one side with the first fluid and at the other...	09/18/1984
3994082	Air operated dredging apparatus Air operated dredging apparatus comprising a submerged pumping unit adapted to be dragged along an underwater bed which unit includes at least two pumping chambers periodically filled with loose material in admixture with water entering the chamber throug...	11/30/1976

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Class 417/137 - Cyclic pumping