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406 results about "Air entrainment" patented technology
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Air entrainment is the intentional creation of tiny air bubbles in concrete. A concrete maker introduces the bubbles by adding to the mix an air entraining agent, a surfactant (surface-active substance, a type of chemical that includes detergents). The air bubbles are created during mixing of the plastic (easy flowing, not hardened) concrete, and most of them survive to be part of the hardened concrete. The primary purpose of air entrainment is to increase the durability of the hardened concrete, especially in climates subject to freeze-thaw; the secondary purpose is to increase workability of the concrete while in a plastic state in concrete.
Lightweight cementitious compositions and building products and methods for making same
Cementitious compositions and methods for making same, in which the cementitious compositions include 35-60 wt. % cementitious reactive powder (also termed Portland cement-based binder), 2-10 wt. % expanded and chemically coated perlite filler, 20-40 wt. % water, entrained air, and optional additives such as water reducing agents, chemical set-accelerators, and chemical set-retarders. In addition, the lightweight cementitious compositions may contain 0-25 wt. % on a wet basis secondary fillers such as expanded clay, shale aggregate, and pumice.
Owner:UNITED STATES GYPSUM CO
High performance non-combustible gypsum-cement compositions with enhanced water durability and thermal stability for reinforced cementitious lightweight structural cement panels
ActiveUS8038790B1Reduce weightPerformance requirementConstruction materialSolid waste managementOperating energyAir entrainment
Structural cement panel for resisting transverse and shear loads equal to transverse and shear loads provided by plywood and oriented strain board, when fastened to framing for use in shear walls, flooring and roofing systems. The panels provide reduced thermal transmission compared to other structural cement panels. The panels employ one or more layers of a continuous phase resulting from curing an aqueous mixture of calcium sulfate alpha hemihydrate, hydraulic cement, coated expanded perlite particles filler, optional additional fillers, active pozzolan and lime. The coated perlite has a particle size of 1-500 microns, a median diameter of 20-150 microns, and an effective particle density (specific gravity) of less than 0.50 g / cc. The panels are reinforced with fibers, for example alkali-resistant glass fibers. The preferred panel contains no intentionally added entrained air. A method of improving fire resistance in a building is also disclosed.
Owner:UNITED STATES GYPSUM CO
Methods of and device for encapsulation and termination of electronic devices
InactiveUS6916679B2Improve sealingPrevent buildupPV power plantsFinal product manufactureElectricityElectrical devices
A novel method for production of and an apparatus for an encapsulated solid-state electrochemical device is disclosed. The present invention provides for electrical devices, such as, for example, thin-film batteries with sensitive chemistries that can survive environmental exposure while providing external electrical contact to the internal cell chemistry. The method of packaging of the present invention may include bonding one or more protective multi-layer laminates to the environmentally sensitive surfaces of an electronic device. The present invention may provide the advantage of avoiding entrapped air beneath the laminates.
Owner:SAPURAST RES
Fluidic nozzle with multiple operating modes
A fluidic nozzle having multiple operating modes comprising a fluidic oscillator circuit having an oscillation chamber having an upstream end and a downstream end and a power nozzle at the upstream end for introducing a jet of a liquid (water) into the oscillation chamber. An outlet throat at the downstream end has a width, which does not allow the oscillation circuit to fill up and start to oscillate without entrained liquid. A pair of control ports are at the upstream end of the oscillation chamber and a pair of feedback passages connect said control ports to downstream ends of said oscillation chamber adjacent said outlet throat. A pair of controllable entrainment holes are provided in the oscillation chamber at the upstream end and a valve opens and closes the entrainment holes, such that when the entrainment holes are open to air, air is entrained and the oscillator does not oscillate. Closing the air entrainment holes initiates oscillation and the issuance of a sweeping liquid jet through the outlet throat.
Owner:DLHBOWLES INC
Drug container entry mechanisms and method
The invention of this application relates generally to intravenous (IV) infusion of drugs to patients, and more particularly to aspects of an IV infusion system comprising an infusate cassette and an infusate container. The present invention provides a drug infusion cassette that incorporates a strong vial spike that may be non-metal, a means for sheathing the spike when it is not in use, an anti-free flow device, and other beneficial features such as an air entrainment lockout mechanism, quality assurance tags, stopcocks made of soft materials and means of securing tubing to the cassette with a minimum of individual parts. The drug cassette can be used with an automated spiking mechanism comprising a motorized vial holder that holds a vial. The spike remains sheathed if the drug cassette is not fully engaged with a mating surface of devices such as a pumping unit or a sedation and analgesia delivery system.
Owner:SCOTT LAB
Concrete mixtures incorporating high carbon pozzolans and foam admixtures
InactiveUS20070056479A1High strengthReduce the amount requiredSolid waste managementPolymer scienceOligomer
Concrete mixtures are manufactured to include high carbon pozzolans and a foam admixture (for air entrainment). The foam bubbles in the foam admixture are stabilized in the presence of the high carbon fly ash by a fluorochemical surfactant. The fluorochemical surfactant preferably comprises an oligomer comprising hydrophilic nonionic monomers and hydrophilic anionic monomers. The high carbon pozzolans can preferably have an LOI greater than between about 1.5% and about 6.0%, without substantially affecting the durability of the foam bubbles in the concrete mixture.
Owner:JACK B PARSON
Solid imaging apparatus and method
ActiveUS7614866B2Reduce viscosityImprove bindingLiquid surface applicatorsConfectioneryAir entrainmentHigh intensity
Owner:3D SYST INC
Fluid flow amplifier
ActiveUS20090032130A1Most efficientVelocity becomes largerCircuit elementsJet pumpsAudio power amplifierAir entrainment
A by-pass fluid flow amplifier which contains a primary nozzle and a primary profile for discharging compressed air into a conduit of the air amplifier and entraining ambient air in the process. A secondary nozzle and a secondary profile for discharging compressed air into the conduit of the air amplifier towards the rear that assists the primary nozzle such as to allow consistent fluid wall attachment of the compressed air and the entrained air caused by the primary nozzle and the primary profile. The secondary nozzle increases the total flow of the amplifier and prohibits the total flow from traveling towards the center of the conduit where flow reversal and turbulence are likely to occur.
Owner:DUMAS ELIJAH +2
Apparatus and method for providing a flow measurement compensated for entrained gas
ActiveUS7165464B2Material analysis using sonic/ultrasonic/infrasonic wavesMaterial analysis using microwave meansSensor arrayAir entrainment
A apparatus 10,110 is provided that measures the speed of sound and / or vortical disturbances propagating in a fluid or mixture having entrained gas / air to determine the gas volume fraction of the flow 12 propagating through a pipes and compensating or correcting the volumetric flow measurement for entrained air. The GVF meter includes and array of sensor disposed axially along the length of the pipe. The GVF measures the speed of sound propagating through the pipe and fluid to determine the gas volume fraction of the mixture using array processing. The GVF meter can be used with an electromagnetic meter and a consistency meter to compensate for volumetric flow rate and consistency measurement respective, to correct for errors due to entrained gas / air.
Owner:EXPRO METERS
Dispersant and foaming agent combination
InactiveUS20040028956A1Low densityReduce weightConstruction materialOther chemical processesAlkaline earth metalAir entrainment
The present invention provides a dispersant and foaming agent combination that is useful in the production of gypsum wallboard and other aqueous cementitious products, a method of forming a gypsum wallboard and a gypsum wallboard. The dispersant in the combination according to the invention is a naphthalene sulfonate-aldehyde condensate alkali salt polymer having a weight average molecular weight of from about 17,000 to about 47,000. The alkali is preferably an alkali metal and / or an alkaline earth metal. The aldehyde is preferably formaldehyde. The foaming agent used in the combination according to the invention is a soap, preferably an alkali salt of an alkyl ether sulfate and / or an alkyl sulfate. The combination of a high molecular weight dispersant and a foaming agent produces a gypsum wallboard core effect that more efficiently entrains air (i.e., creates void space), thereby lowering overall board weight without detrimentally affecting strength. A gypsum wallboard formed using the dispersant and foaming agent combination according to the invention exhibits a higher nail pull value than gypsum wallboard formed using a conventional dispersant and a foaming agent at the same solids loading ratio.
Owner:GEO SPECIALTY CHEM
Build pad, solid image build, and method for building build supports
InactiveUS20080170112A1Less post-build cleaningLess curing3D object support structuresPrintingAir entrainmentEngineering
A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a build in an image plane. An operator using the device needs merely to remove a spent cartridge and replace it with a fresh cartridge to continue solid imaging virtually uninterrupted. The apparatus also includes the capability of withdrawing and inserting an imager without the operator having to perform a separate alignment step. A brush attached to the transport film and forming part of the cartridge provides for intra-layer removal of excess uncured build material. If desired, the apparatus can produce a fully reacted build. A high intensity UV source cures the build between layers. An injection molded build pad is designed to hold a build in an inverted position for improving the build. The invention also provides for tilting the build elevator to reduce air entrainment and for releasing the build from the image plane.
Owner:3D SYST INC
Method for continuously monitoring chemical species and temperature in hot process gases
InactiveUS20020031737A1Minimizing dilution effectInvestigating moving fluids/granular solidsColor/spectral properties measurementsAir entrainmentOrganic fuel
Methods and apparatus are presented using tunable diode lasers for monitoring and / or controlling a high temperature process using an oxidizer containing O2 and organic fuel. Real-time monitoring of key species such as O2, CO, and H2O allow determination of the global or local stoichiometry, gas temperature, particulate concentration, and air entrainment levels into the process. Coupling the measured information with a control system provides a means for optimizing and controlling the process.
Owner:AIR LIQUIDE AMERICA INC
Brush assembly for removal of excess uncured build material
InactiveUS20080181977A1Less post-build cleaningLess curingFrozen sweetsConfectioneryAir entrainmentHigh intensity
A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a build in an image plane. An operator using the device needs merely to remove a spent cartridge and replace it with a fresh cartridge to continue solid imaging virtually uninterrupted. The apparatus also includes the capability of withdrawing and inserting an imager without the operator having to perform a separate alignment step. A brush attached to the transport film and forming part of the cartridge provides for intra-layer removal of excess uncured build material. If desired, the apparatus can produce a fully reacted build. A high intensity UV source cures the build between layers. An injection molded build pad is designed to hold a build in an inverted position for improving the build. The invention also provides for tilting the build elevator to reduce air entrainment and for releasing the build from the image plane.
Owner:3D SYST INC
Welding helmet positive air pressuring system and method
A method and system for controlling ventilation in a welding helmet is provided. The invention may be adapted to a wide variety of system types, and may reduce or eliminate the need for a shroud or barrier around the head and neck of the welder, of the type used in PAPR systems. The airflow system includes forward and rearward air streams, directed onto the face of the welder, onto the top of the head of the welder, and toward the back of the head of the welder. The air streams help to cool the welder, provide a fresh source of air for breathing, and create a positive pressure system that reduces or excludes entrainment of contaminated external air into the forwardly directed air flow. Certain embodiments may include streams that are filtered, split or redirected via deflectors and conduits to achieve the aforementioned goals.
Owner:ILLINOIS TOOL WORKS INC
Elevator and method for tilting solid image build platform for reducing air entrainment and for build release
ActiveUS20080179787A1Reduce viscosityImprove bindingMouldsConfectioneryAir entrainmentHigh intensity
A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a build in an image plane. An operator using the device needs merely to remove a spent cartridge and replace it with a fresh cartridge to continue solid imaging virtually uninterrupted. The apparatus also includes the capability of withdrawing and inserting an imager without the operator having to perform a separate alignment step. A brush attached to the transport film and forming part of the cartridge provides for intra-layer removal of excess uncured build material. If desired, the apparatus can produce a fully reacted build. A high intensity UV source cures the build between layers. An injection molded build pad is designed to hold a build in an inverted position for improving the build. The invention also provides for tilting the build elevator to reduce air entrainment and for releasing the build from the image plane.
Owner:3D SYST INC
Imager and method for consistent repeatable alignment in a solid imaging apparatus
ActiveUS20080231731A1Less post-build cleaningLess curingTelevision system detailsAdditive manufacturing apparatusAir entrainmentEngineering
A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a build in an image plane. An operator using the device needs merely to remove a spent cartridge and replace it with a fresh cartridge to continue solid imaging virtually uninterrupted. The apparatus also includes the capability of withdrawing and inserting an imager without the operator having to perform a separate alignment step. A brush attached to the transport film and forming part of the cartridge provides for intra-layer removal of excess uncured build material. If desired, the apparatus can produce a fully reacted build. A high intensity UV source cures the build between layers. An injection molded build pad is designed to hold a build in an inverted position for improving the build. The invention also provides for tilting the build elevator to reduce air entrainment and for releasing the build from the image plane.
Owner:3D SYST INC
Method and apparatus for hand drying
InactiveUS7039301B1Improve the forceIncrease temperatureDrying solid materials with heatDrying gas arrangementsAir entrainmentEvaporation
After washing, the hands are dried rapidly and comfortably by using a shaped high speed flow of heated air. The air flows in a direction controlled by an air outlet shaped to retain much of the exiting forceful air flow and temperature at a distance where the hands are dried. The air entrainment is controlled so that the properties of the air flow are not diluted by the air entrainment to a point where the drying performance is degraded. The forceful air flow blows off most of the loose water on the hands. The forceful air flow also reduces the stagnation boundary layers in the hands so that the evaporation removal of the remaining film of water is improved. These result in reduced drying time and comfort during and after drying.
Owner:EXCEL DRYER
Lightweight cementitious compositions and building products and methods for making same
Cementitious compositions and methods for making same, in which the cementitious compositions include 35-60 wt. % cementitious reactive powder (also termed Portland cement-based binder), 2-10 wt. % expanded and chemically coated perlite filler, 20-40 wt. % water, entrained air, and optional additives such as water reducing agents, chemical set-accelerators, and chemical set-retarders. In addition, the lightweight cementitious compositions may contain 0-25 wt. % on a wet basis secondary fillers such as expanded clay, shale aggregate, and pumice.
Owner:UNITED STATES GYPSUM CO
Passive cooling system for auxiliary power unit installation
InactiveUS20070063098A1Improve cooling effectEnhanced cooling airflowPower plant cooling arrangmentsPower installationsNacelleAir entrainment
A passive cooling system for an auxiliary power unit (APU) installation on an aircraft is provided. The system is for an auxiliary power unit having at least a compressor portion of a gas turbine engine and an oil cooler contained separately within a nacelle. The system includes the auxiliary power unit housed within the nacelle of the aircraft, an engine exhaust opening defined in the aft portion of the nacelle and communicating with the gas turbine engine, at least a first air inlet duct communicating with a second opening defined in said nacelle and with said compressor portion and the oil cooler is located within a second duct communicating with an opening other than the engine exhaust opening of said nacelle and with the engine exhaust opening. Exterior cooling air and engine exhaust ejected through said engine exhaust opening entrain cooling air through said second duct to said oil cooler, and thus provide engine oil cooling. An exhaust eductor is also provided.
Owner:PRATT & WHITNEY CANADA CORP
Production of stretch plastic film
Stretch plastic film is formed by extruding suitable plastic material from an annular die as a tubular film, forming the extruded film into a bubble with air entrapped therein by collapsing the tubular film at a predetermined distance from the annular die, causing the temperature of the tubular film when collapsed to be sufficiently high to cause opposite sides of the collapsed film to become bonded together to form a blocked two layer film, and stretching the blocked two layer film to reduce its thickness.
Owner:MACRO ENG & TECH
Exhaust fan assembly
An exhaust fan assembly is provided for expelling contaminated air from a building. The assembly includes fan housing connected to the building via a duct. The fan housing contains a fan the draws air from the building through the duct. An extension is mounted to the outlet end of the fan housing, and has a cylindrical upper end connected to a nozzle. A windband is connected to the upper end of the nozzle, and provides an air entrainment path that allows ambient air to mix with the exhaust air prior to exiting through an exhaust fan assembly outlet.
Owner:GREENHECK FAN
Lightweight foamed fly ash based binders and method
ActiveUS20120172469A1Reduce weightHigh strengthSolid waste managementFluid removalPolymer scienceFoaming agent
A method of making a lightweight cementitious binder composition with improved compressive strength for products such as cementitious panels is disclosed. The method mixes fly ash, alkali metal salt of citric acid, alkali metal silicate, foaming agent for entraining air, water and in the preferred embodiment a foam stabilizing agent. Compositions which include fly ash selected from the group consisting of class C fly ash, class F fly ash and mixtures thereof, alkali metal salts of citric acid, alkali metal silicates, foaming agents, and preferably a foam stabilizer, such as polyvinyl alcohol, and do not require use of set retarders. Compositions containing class F fly ash can optionally contain Type III Portland cement.
Owner:UNITED STATES GYPSUM CO
Pre-stretched wrapping film roll with entrapped air and method
InactiveUS20060243842A1Easy and fast loadingLayered productsFunction indicatorsLinear low-density polyethyleneAir entrainment
A pre-stretched film roll of a mono orientated linear low density polyethylene (LLDPE) is stretched between 30% and 320% depending on the final product that is required. Stretching is in the machine direction (MD) at a controlled rate in two stages. Differentially rewinding the film entraps air between the layers of the roll and creates soft overlapping edges around the roll to produce a spongy, “soft” roll that prevents and resists drop damage due to its shock absorbent characteristic.
Owner:MARTIN GUILLERMO DURAN ESPINOZA & ANGEL GERARDO SANTILLAN DIAZ DE LEON
Brewed iced tea or non-carbonated drink dispenser
InactiveUS6915732B2Heating fastSignificant variation of flow rateLiquid transferring devicesBeverage vesselsAir entrainmentEngineering
A beverage dispensing apparatus includes a mixing chamber for mixing hot water, a beverage concentrate and cold water, as well as one or more additives. The hot water and cold water are supplied at a predetermined flow rate at a predetermined proportion, regardless of the pressure of the water supply. A water heater supplies the hot water within a specified pressure range and without significant entrapped air.
Owner:PEPSICO INC
Measurement of entrained and dissolved gases in process flow lines
ActiveUS7086278B2Quantity minimizationIncrease flow rateAnalysing fluids using sonic/ultrasonic/infrasonic wavesFlow propertiesAir entrainmentProduct gas
A device for measurement of entrained and dissolved gas has a first module arranged in relation to a process line for providing a first signal containing information about a sensed entrained air / gas in a fluid or process mixture flowing in the process line at a process line pressure. The device features a combination of a bleed line, a second module and a third module. The bleed line is coupled to the process line for bleeding a portion of the fluid or process mixture from the process line at a bleed line pressure that is lower than the process pressure. The second module is arranged in relation to the bleed line, for providing a second signal containing information about a sensed bleed line entrained air / gas in the fluid or process mixture flowing in the bleed line. The third module responds to the first signal and the second signal, for providing a third signal containing information about a dissolved air / gas flowing in the process line based on a difference between the sensed entrained air / gas and the sensed bleed line entrained air / gas.
Owner:CIDRA CORP SERVICES
Compositions and methods for reducing the quantity but not the concentration of active ingredients delivered by a dentifrice
InactiveUS6010683AGood dispersionReduce the total massCosmetic preparationsToilet preparationsAir entrainmentToothpaste
Toothpaste and other dentifrices formulated to include a volume increasing agent (density reducing agent) in order to significantly increase the volume of the toothpaste at the time it is dispensed onto a toothbrush. The inventive dental compositions preferably include a substantial quantity of entrained air or other gas in order to reduce the density, and hence the weight, of toothpaste actually placed within a person's mouth. The result is a reduction in the amount of active ingredients introduced into a person's mouth that might be ingested. The entrained air or other gas can also increase the availability of the active ingredient since the foamed composition increases the dispersibility of the active ingredients within saliva. The net effect is that a person decreases the actual amount of toothpaste without decreasing the volume, or visual amount, of toothpaste dispensed on the toothbrush. The density-reduction effect can be augmented using a low density filler in addition to, or instead of, entrained gas. The inventive dentifrices might be pre-foamed with a storage container or formulated to foam in situ when dispensed from the storage container.
Owner:ULTRADENT PROD INC
Reclosable fastener strip
InactiveUS20050251973A1Easy to fixImprove sealingSnap fastenersSlide fastenersAir entrainmentInterconnection
A reclosable fastener strip for securing to a film web comprises first and second elongated profile strips having interlocking hooks, recesses and protuberances. Each hook, as extruded, has a half arrowhead-shaped tip, a concave or partial-concave tail, and a generally upstanding neck connecting the tip and tail. Each recess has a base with a pair of generally upstanding neck elements disposed on opposite ends of the base. The base does not extend laterally beyond the neck elements. Each protuberance, as extruded, has a rounded tip, a concave or partial-concave tail, and a generally upstanding neck portion connecting the tip and tail. The profile strips are readily secured to the web without entrapping air between the profile strips and the film web and form an vacuum tight seal. The interlocking hooks, recesses and protuberances are sized, constructed and arranged to provide a vacuum tight seal upon interconnection thereof.
Owner:COM PAC INT
Rotational flow silo equipped with air entrainment ridge
The invention discloses a gyrating drilled shaft provided with an aeration ridge. The invention is characterized in that the gyrating drilled shaft is provided with an aeration ridge on the wall surface at the middle lower part of the drilled shaft section, the aeration ridge is formed by gradually shrinking the drilled shaft connected with the upper flat section of a flood discharging tunnel from the middle part to the middle lower part and then suddenly expanding the wall surface, and at least two aeration holes are distributed on the annular aeration ridge formed by the sudden expansion, each of the aeration holes is spliced with a vent pipe communicating with the atmosphere. The vent pipes can be selectively buried on the outer side of the gyrating drilled shaft. The gyrating drilled shaft disclosed by the invention enables near-wall water layers at the lower reaches of the aeration ridge to become into aerated water flows, thereby increasing the flow cavitation number, playing the effects of air entrainment and cavitation prevention, preventing the overflowing section at the middle lower part of the drilled shaft from being damaged by cavitation erosion, and ensuring the safe flood discharging operation of the gyrating drilled shaft.
Owner:SICHUAN UNIV
Landfill design and method for improved landfill gas capture
InactiveUS7198433B2Efficient collectionFacilitate methodMethane captureSolid waste disposalGas compositionAir entrainment
The invention provides an improved method of collecting biogas from a landfill that results in more complete collection of biogas produced in the landfill, and with less contamination with air. The method involves providing the landfill with an upper gas containment layer near the surface of the landfill to retard biogas escape and air entrainment into the landfill. Underneath the gas containment layer is provided a gas-permeable conductive layer. Underneath the conductive layer, a well withdraws biogas from the landfill. Withdrawal of biogas from the well creates a partial vacuum that draws gas from the gas-permeable conductive layer down through the waste mass to the well. If the rate of gas withdrawal from the well is too rapid, air will be entrained from the atmosphere into the gas-permeable conductive layer. But if the rate of gas withdrawal from the well is too slow, biogas may percolate through the gas-containment layer and the surface of the landfill to escape. Monitoring the gas composition of the gas-permeable layer allows one to determine quickly and continuously whether the rate of gas withdrawal from the well is too fast or too slow.
Owner:INST FOR ENVIRONMENTAL MANAGEMENT
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