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7469748 |
Submersible pumping system
A technique is provided for pumping fluids in a subterranean wellbore. A submersible pumping system can be deployed in a wellbore for moving desired fluids within the wellbore. The pumping system...
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7232524 |
Methods and apparatus for increasing and extending oil production from underground formations nearly depleted of natural gas drive
Methods and apparatus employing inert gases injected into the lower level of sloping underground oil-bearing formations as a driving mechanism and water injected into the upper level of the...
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6921252 |
Hydraulic pump driven by cyclic pressure
A hydraulic pump for injecting a predetermined amount of a fluid product into a line carrying fluid that is subject to cyclic pressure. A chamber has a rigid outer wall adapted to be fluidly...
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6822343 |
Generating electric power in response to activity of a biological system
A device for generating electricity includes a first portion including a first wall defining a first fluid passage and a second portion including a second wall defining a second fluid passage. A...
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6733252 |
Fluid-handling systems and components comprising a bladder pump, a methods therefor
A fluid-handling system capable, in various embodiments, of storing, mixing, and dispensing fluids, and also regulating the flow of fluids. The system includes a cartridge having a non-expandable...
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6699021 |
Passively pumped liquid feed fuel cell system
A direct methanol fuel cell (DMFC) system is provided with a pump for pumping methanol into the cell. The pump is driven by carbon dioxide produced by the electro-chemical reaction at the anode of...
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6619932 |
Restarting device of a pump change-over valve which induces a pressure difference within the pump change-over valve to remove the latter from an intermediate stalled position
A restarting device of a pump change-over valve in a pump is provided, in which the pump includes; a pump main body 1 and a change-over valve 2 . The change-over valve 2 is provided with a...
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6619931 |
Bladder pump for liquid sampling and collecting
A liquid pump for pumping groundwater samples from small diameter sub-terrain wells, comprising a tubular casing having inlet apertures, a top cap provided with a fluid communication port and a...
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6488487 |
Pulsation damping device
The invention provides a pulsation damping device in which an offset load on a pulsation suppression diaphragm is eliminated while an air supply valve and an air discharge valve are separately and...
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6481982 |
Diaphragm pump having a mechanism for preventing the breakage of the diaphragm when a discharge check valve is not completely closed due to the insertion of foreign matter into the valve
A diaphragm pump, in which a working fluid control valve (D) opens a working fluid make-up passage (B 24 ) to prevent a diaphragm (C) from being damaged when an excessive discharge pressure acts on...
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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...
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6435845 |
Air driven devices and components therefor
An air driven double diaphragm pump has two opposed pumping cavities with diaphragms extending thereacross. A shaft extends between the diaphragms and through an actuator housing. The housing...
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6419462 |
Positive displacement type liquid-delivery apparatus
A positive displacement liquid-delivery apparatus includes a positive displacement pump 110 and a differential pressure control unit 142. The positive displacement pump 110 includes a...
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6345962 |
Fluid operated pump
A pump, for moving a pumped fluid using a pumping fluid, comprising an outer housing defining an interior volume. A compressible main tube, having an interior space, is located within the outer...
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6328071 |
Well pressure tank
A water system uses a pressure tank of an extremely small size. Said pressure tank is of extremely small diameter and can be a variety of lengths. This pressure tank has an opening at one end for...
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6322338 |
Pulsation damping device for a pump
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6305913 |
Pressure processing a pumpable substance with a flexible membrane
An apparatus and method for pressure processing a pumpable substance, such as a pumpable food product or slurry. In one embodiment, the apparatus includes a pressure vessel having an inlet valve...
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6302660 |
Tube pump with flexible tube diaphragm
As tube-phragm pump includes a pump head (1) and an electromagnetic driver (2). The pump head (1) includes a cylinder (21) having a cylindrical space formed therein, and a cylindrical flexible tube...
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6257844 |
Pump device for pumping liquid foodstuff
A pump device for pumping liquid foodstuff includes a pump housing having an inlet and an outlet for pumping the foodstuff therethrough. A pump body is disposed within the pump housing having an...
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6162027 |
Fluid driven pump and portioning check valve
A pump includes a housing, an enlarged block, an inlet fluid conduit, an outlet fluid conduit and a flexible diaphragm. The housing defines a chamber having an inlet and a spaced apart outlet. The...
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6152705 |
Air drive pumps and components therefor
An air driven double diaphragm pump has two opposed pumping cavities with diaphragms extending thereacross. A shaft extends between the diaphragms and through an actuator housing. The housing...
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6065944 |
Annular pump
A pump having a semi-rigid flexible outer tube with a sealed top and a sealed bottom, check valves at the top and bottom such that the outer tube is in fluid communication with the working fluid,...
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6017198 |
Submersible well pumping system
The invention generally concerns a submersible well pumping system comprising an axially elongated housing having a diameter less than the bore hole of the well, a multi-chamber hydraulically...
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5993172 |
Method and apparatus for pressure processing a pumpable substance
An improved method and apparatus for pressure processing a pumpable substance are shown and described. In a preferred embodiment, a valve is coupled to a source of a pumpable substance and a...
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5964580 |
Positive displacement pump having a ratchet drive guide for dispersing cyclic compression stresses over the circumference of an internal flexible member
A positive displacement pump includes a deformable hollow member for delivering a subject liquid by a cycle of contraction and restoration of its volume, a casing which contains the hollow member,...
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5893707 |
Pneumatically shifted reciprocating pump
A pneumatically actuated reciprocating fluid pump and spool valve combination is pneumatically shifted by pressurized air that exhausts from a respective pressurized bellows, diaphragm, or piston...
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5522463 |
Downhole oil well pump apparatus
A downhole oil well pump apparatus is useful for lifting oil from the lower end of production tubing adjacent the formation to the earth's surface. The apparatus includes a tool body that can be...
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RE34754 |
Fluid sampling apparatus
A fluid sampling apparatus is disclosed for withdrawing samples of groundwater or other fluids from a well or other monitoring site. The apparatus preferably includes pump means, conduit means and...
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5308230 |
Bellows pump
A metallic bellows pumps for pumping corrosive, caustic, acidic or toxic fluids which includes a casing with an annular bellows portion within said casing with one end affixed to the casing and the...
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5252040 |
Fluid transporting apparatus using reflexive hydraulic actuation
An apparatus for transporting fluids from a reservoir or source to a remote point of use wherein a multiple-chambered slave unit, when hydraulically actuated through a single conduit communicating...
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5222491 |
Temporary patient ventilator
A temporary patient ventilator is a modified version of the widely used air-mask-bag-unit (AMBU). The modified AMBU has guy wires attached to the inside resilient walls of the airbag which are...
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5213478 |
Slurry pumping method and apparatus
A slurry pumping method and an apparatus to deliver slurry waste from factories to a filter press for solid-liquid separation. In this apparatus, a pair of laterally or vertically arranged...
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5209654 |
Fluid pump with flexible pump chamber
A fluid pump, particularly an extracorporeal blood pump, comprises a pump chamber (1) having an inlet opening (2) and an outlet opening (3), each connected to a respective non-return valve (4,5)....
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5174732 |
Viscous fluid pressure-feed apparatus
A viscous fluid pressure-feed apparatus which feeds and drains a slurry of a highly viscous fluid in a casing to a filter press, or the like inside, or outside, an elastic film by pressurizing the...
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5171207 |
Apparatus and method of use for pulsatile blood flow
An apparatus and a method of use are disclosed which assist in pulsating blood to a patient during cardiopulmonary bypass surgery and assists in weaning a patient after cardiopulmonary bypass...
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5158439 |
Pneumatic pumping device
A pneumatic pumping device incorporating a movable valve such as a bellows, or a diaphragm, driven by air back pressure in a cylinder so that a liquid is drawn in and discharged by reciprocating...
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5147185 |
Pump apparatus for fluid sampling and collection, and the like
A liquid pump apparatus is disclosed for pumping groundwater samples, contaminants or other fluids from a well, monitoring site, tank, vessel, or the like. The pump apparatus is applicable in...
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5147184 |
Floating layer recovery apparatus
A floating layer recovery apparatus is disclosed for selectively pumping a liquid floating on groundwater. The apparatus preferably includes a first float which is buoyant in the floating layer...
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5147182 |
Integrated vacuum pressure system for a bladder pump
An apparatus for driving a sampling pump disposed in a monitoring well comprises a structural support member including a container for pressurized gas; a platform having a top surface and supported...
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5131819 |
Apparatus for and method of managing liquid under pressure
An apparatus for managing liquid under pressure having a first volume containing a liquid at a first pressure and a second volume containing liquid at a second, lower, pressure and energy storage...
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5027902 |
Self-cycling pump apparatus and method
A self-cycling pump apparatus wherein a valve functioning as a pump cycling device is connected to the pump so that it may be lowered together with the pump to a submerged position in a sub-surface...
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4983102 |
Self-enclosed filter pumping system
A self enclosed filter pump system (10) is provided to deliver precise quantities of selected fluids. The system (10) includes a pump assembly (12) of a pneumatically controlled type and a modular...
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4902206 |
Bellows pump
A bellows pump which is disclosed herein has two bellows made of a plastic material and provided with liquid inlet and outlet ports for transferring a liquid by expanding and contracting the...
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4876946 |
Flexible hose pump
A pump comprising a casing (1) having interior space in which there is provided a flexible hose (2) mounted for reciprocations having one end (5) thereof which is turned inside out and secured...
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4854945 |
Bladder device and method for displacing air in a bottle bore shaft
A trapped air displacement device includes a flexible gas fillable bladder 30 and a device 34 for inserting the bladder 30 into a bottle bore 8 of a turbine or generator shaft 14. The flexible...
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4838297 |
Apparatus for injecting a fluid into a network
The device for injecting a fluid into a network comprises storage and supply means (1, 2) for the fluid to be injected, an injector (11) and a proportioning unit (7) to obtain a constant injection...
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4810172 |
Gas-operated positive displacement pump
To pump liquid using a source of gas pressure, a gas-operated positive displacement pump includes an outer tubular rigid wall and an inner movable wall forming a cylindrical liquid chamber which...
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4797070 |
Displacement compressor for supercharging of combustion engines
An internal combustion engine is connected to a supercharger which is powered by exhaust energy for compressing and feeding of the air charge. The supercharger has at least one exhaust chamber and...
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4789016 |
Container filling apparatus
An apparatus including dispensers connected to a hopper enable discrete portions of filler material to be introduced into individual containers as they pass through a food canning operation. The...
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4782817 |
Ventricular support system
An extracorporate ventricular support system includes a two bladder pump employing continuous gravity fill to the first bladder, while the second bladder is pneumatically driven to produce a...
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