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9028989 Fuel cell system having a fluid flow distribution feature  
A fuel cell system includes a water vapor transfer unit and a fluid flow distribution feature, the water vapor transfer unit including a first plate having a plurality of first flow channels for...
8794255 Additive proportioning system  
The subject invention described herein is directed to an improved fluid powered system for dispensing a selectively variable proportion of additives into a primary fluid supply line such as is...
8640729 Method and apparatus for automatic fluid shut-off  
An automatic shut-off valve shuts off fluid flow in the event of abnormal amounts of fluid flow. A rotor inside the valve turns when fluid flows through the valve. The rotor causes a pneumatic...
8387648 Device for dividing a flow equally between two or more objects  
Device for equalizing a liquid flow in a flow taking place through a device formed of at least two liquid-moving elements located on shafts (10, 11), in which case the flow channel is formed of a...
8342364 Fluid dispensing apparatus and method  
A fluid dispenser and method of operating the same. The fluid dispenser can include a wheel driven by diluent passing along a flow path in the fluid dispenser. The wheel can be connected to a pump...
8316874 Pressure plenum flow divider  
A fluid metering or pumping device includes multiple pumping or metering elements that are connected so that they all operate together, moving in the same direction and at the same speed. The...
8104648 Mixing applicator  
An applicator mixes an additive with a fluid stream and dispenses the resultant mixture. The applicator includes a housing having a fluid inlet, a downstream auger chamber, a downstream mixing...
7828007 Automatic pump control device  
An automatic pump control device for an injection pump used to inject fluid (typically methanol) into oil or natural gas wells to prevent freezing. The device enables the pump to operate at rates...
7192559 Methods and devices for high throughput fluid delivery  
Methods and devices for delivering fluids into microfluidic device body structures are described. The methods and devices include the use of fluid manifolds which are integrated or interchangeable...
7131454 Piston sealing mechanism for liquid additive injection pump  
A system for injecting a predetermined amount of a secondary fluid into a primary fluid stream uses a liquid additive injection pump driven by a fluid powered motor driven by the primary fluid...
7037615 Trapping method and system for energy conversion devices  
A trap for an energy conversion device comprises a trapping system comprising a filter element and a trap element, and fluidly coupled to a reforming system. The trapping system is monitored by a...
6997350 Apparatus for adding fertilizer to water in an underground sprinkling system and fertilizer therefor  
Apparatus for adding liquid fertilizer to a water line of a sprinkler system includes a mechanical injector device powered by a paddle wheel turned by water flowing through the water line. The...
6899282 Injection spraying system  
An injection spraying system for mixing additives in controlled amounts to water for spraying, which improves handling and calibrating of the concentration of the mixture. The system includes a...
6769449 Water booster methods and apparatus  
Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a...
6431198 Pumping system for the injection of measured quantities of fluid into a fluid stream  
A pump system for the selected injection of one or more fluids is disclosed where the system generally includes a flow meter including a means to translate the flow rate through the meter to one...
6299657 Process for carrying out chemical reactions using a microlaminar mixer  
In the reaction process, at least two educts A, B are divided by a system, assigned to each of them, of slit-like microchannels 1a, 1b into spatially separate fluid lamellae, which then emerge...
6238178 Water booster methods and apparatus  
Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a...
6209564 Device for adjusting pressure difference in a valve fed with two fluids of different pressures  
A pressure difference adjusting device is provided for a valve having a first inlet for a first fluid of a first pressure, a second inlet for a second fluid of a second pressure not equal to the...
6135719 Method and apparatus for metering injection pump flow  
A system for metering a fluid, such as a catalyst in an industrial chemical process plant, includes a controller, a drive pump assembly and an injection pump assembly. The drive pump assembly...
6029688 Water wheel for pumping chemical treatment into water stream  
The invention is a water wheel supplying energy to a pump. The pump will typically be used to apply chemical treatments to the water stream. Some examples of chemicals to be added are acids or...
5896881 Process and device to regulate the inner pressure of a tank and/or to establish defined flow conditions for gas currents in the head space of tanks  
The process and device according to the invention make it possible to reduce the pressure build-up in the head space as a function of the quantity of inflow medium. It also makes it possible to...
RE35780 Constant ratio post-mix beverage dispensing valve  
The present invention is a post-mix beverage dispensing valve for accurately maintaining the proper ratio of two liquid beverage components. The present invention includes a valve main body having...
5588088 Hot water tempering system utilizing a storage tank, a bypass line and a proportional flow controller  
A hot water tempering system tempers the output of a hot water storage tank by mixing that output with a cold water flow in a defined ratio to produce a flow of water at a steady intermediate...
5513671 Hydraulically controlled water spool valve  
A valve, to control the injection of lubricant into a viscous material pump pipeline is disclosed. The valve is operated off a parameter of the viscous material pump such as hydraulic fluid...
5513963 Direct action fluid motor and injection pump  
A direct action fluid motor and injection pump is disclosed which injects small quantities of a second fluid into a primary fluid stream. A housing has an inlet and an outlet connected to a...
5505224 Device for controlling piston displacement and pump including same  
The device (D) for controlling the reciprocating displacements of a differential piston (1) includes at least one valve associated with each of the parts of different cross-sections of the piston...
5454395 Fluid motor metering device  
This invention relates to an accurate mechanical proportioning pump and/or mixing device that is adaptable for industrial, commercial and consumer use that incorporates a series of...
5433240 Low-ratio proportioner  
The present invention provides a self-powered proportioner which can automatically, proportionally mix two fluids in a low ratio. A fluid gating means is disposed intermediate a fluid supply and a...
5425968 Method and apparatus for the refinish application of multicomponent coating compositions  
An improved method and apparatus for applying a multicomponent coating composition onto a substrate. The method comprises separately transporting at least one component under pressure to a...
5181467 Automatic dampening water replenisher  
The improved automatic dampening water replenisher has two flow sensors that respectively measure the flow rates of stock solution and diluent water which are to be mixed to prepare dampening...
5146944 Dual pump metering dilution apparatus  
Apparatus for dilution of one liquid with another, such as a pesticide concentrate diluted with water, wherein dual piston displacement pumps are each actuated respectively by a coil spring and by...
5110458 Mixer and fluid filtering unit  
The mixer and fluid filtering unit is connectable to a source of a first or base fluid under pressure and to a source of a second fluid or solute which may be a solute pumping unit. The base fluid...
5108273 Helical metering pump having different sized rotors  
A pump assembly includes commonly driven coaxially positioned helical rotors, rotatably engageable within corresponding stators. Each combination of rotor and stator defines a pump having a...
5066203 Apparatus for pneumatically discharging concrete  
In an apparatus for pneumatically discharging concrete fed hydromechanically in a dense stream, using for the hydromechanical feed a concrete pump having a hydraulic drive comprising at least two...
5012837 Ratio device for dispensing liquids  
A ratio device for dispensing first and second liquids in a preselected ratio, which comprises a housing assembly having two gear pumps interconnected for concurrent operation. One of the gear...
4961519 Lime feeder  
A lime feeder includes a metering driving vessel divided into two chambers arranged below a water inlet so that, alternatively one and the other chamber is filled with water and tilts between two...
4949540 Hydraulic actuator system having non-cavitating flow equalizer  
A hydraulic system having multiple actuators is provided with positive pressure flow equalization for both advancing and retracting movements of the system by means of first and second flow...
RE33222 Pressure transfer fluid heater  
A device for transferring pressure from one fluid stream to another utilized in conjunction with a storage vessel where fluid is stored at ambient pressure and a desired temperature. An entering...
4875626 Piston-powered dispensing system  
A piston-powered fluid dispensing system is disclosed. The fluid dispensing system comprises an apertured base, a hollow elongated cylinder, an apertured piston, a hollow orificed overcap, an...
4859157 Device for injecting fertilizer or other chemicals into a pipeline  
A device for injection of liquid fertilizer into an irrigation pipe includes an axisymmetrical housing (I) adapted for insertion into the pipe line (III). The device comprises an axial turbine...
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...
4832072 Fluid proportioning and mixing system  
The fluid proportioning and mixing unit includes a metering and pumping section and a mixer unit. The metering and pumping section is divided into a first solute section and a second section...
4827875 Dilution valves  
A dilution valve dilutes a liquid feed concentrate with water, to give a dilute feed for feeding to piglets. The valve has a plunger (20) which reciprocates within a mixing chamber (66), to which...
4821761 Closed loop pump control system  
A system for controlling the output flow rate of a second pump to proportionately track the output flow rate of a first pump in which the first pump produces an electrical signal at each...
4809731 Liquid injection apparatus having an external adjustor  
A liquid additive injection pump has a hydraulic motor comprising a differential piston assembly reciprocable in a housing under the urging of a primary liquid into which an additive is to be...
4767059 Piston-powered dispensing system  
A fluid-dispensing system is disclosed. The dispensing system comprises an apertured base, a hollow cylinder, an apertured piston, an orificed overcap, a fluid passageway, an apertured extension,...
4756329 Devices for the injection of an additive product metered into a main fluid  
The invention relates to a device for injecting a metered product into a main circulation of liquid, comprising a metering piston (28) coupled to a stepped piston (11) whose motion results from...
4651765 Fertilizer pump  
A pump for injecting fertilizer or other material into a pressurized water supply line comprises an impeller including a housing having an inlet connectable to the pressurized water supply line,...
4638924 Self mixing sprayer  
A sprayer mixes water and concentrate on an "as-used" basis. A preselected amount of concentrate is dispensed into a mix tank for each reciprocation of a proportioning pump set. The amount of...
4621747 Apparatus for charge-wise dosing a metered volume quantity of a flowing medium continuously supplied to the apparatus under delivery pressure  
An apparatus for charge-wise dosing a metered volume quantity of liquid medium to be supplied continuously under delivery pressure, comprising a pair of serially connected cylinder-and-piston...
Matches 1 - 50 out of 246 1 2 3 4 5 >