A firefighting nozzle for discharging a foam and water mixture. The firefighting nozzle has an inner nozzle concentrically positioned within an outer barrel. A baffle in the shape of an inverted cone is position at the outlet of the inner nozzle. The axial position of the baffle determines the flow rate of the foaming agent. The inner nozzle itself is also axially movable within the bore of the outer barrel, the axial position of the inner nozzle determining the flow rate of water between the ou...

A foam generation device and method of producing foam wherein an electrical charge is placed upon a foam producing solution or admixture thereof with air. The above admixture is then forced by air pressure through a grounded foam-producing mesh such that foam bubbles are produced at high efficiency. In addition, the turbulence of the air passing through the device may be reduced by a honeycomb section. This honeycomb section in turn may be grounded and the air flow through the device reversed su...

In a foam molding method useful in efficiently manufacturing a foam molding with high surface accuracy and a mold suitable therefor, a plurality of gas-blowing devices 24 including the following members are arranged in the bottom of a cavity 23 present in a lower die 22: valve boxes 25, gas channels 26, valve elements 27, gas flow-restricting valves 28, and other members. The gas channels 26 of the gas-blowing devices 24 are supplied with gas from a common air pump. The valve elements 27 move ve...

Disclosed is a ceramic foam material and process for making same having superior strength and chemical durability properties wherein the impregnated foam impregnated with a phosphate bonded ceramic is fired at an elevated temperature so as to produce a ceramic body substantially free of phosphate and having individual grains of ceramic tightly coalesced to minimize porosity between the grains.

A stable, edible anhydrous aerosol foam comprises a foamable liquid oil, a foaming agent, a food grade propellant, and at least 15 wt % dispersed solid particles. The foam is a stable whip having the consistency of whipped cream and can be dispensed in repeatable and measurable quantities onto a spoon. It is useful to dispense a wide variety of active, especially therapeutic, agents and, in particular, as an alternative to tablets or capsules which are hard to swallow or liquid medicines having ...

A method of binding sheets of a book having highly irregular edges while maintaining a flush thumb edge, includes applying a foam adhesive to the irregular edges and wrapping a spine tape with cold adhesive such that the spine tape contacts the book covers.

A foam fluxer for fluxing surface mounted devices on printed wiring boards is suitable for low solids content fluxes. The foam fluxer is for installation in an open tank containing liquid flux positioned under a conveyor path conveying the components. The fluxer comprises an aerator chimney housing with side walls and end walls for placement in and protruding above the open tank, the housing having a top foam outlet for positioning below the conveyor path, at least one vertical internal divider ...

The present invention is directed to a foamed product having a substantially closed cellular configuration. The foamed product is formed from a blend of asphalt with a polyvalent metal salt of anionic group containing polymers. The resultant foam product exhibits low bulk densities and pore volumes of about 85 percent or greater.

An apparatus for controlling the rate at which a defoaming agent is supplied to a processing vessel. A first sensing element senses the quantity of liquid in the vessel. A second sensing element senses the position of the upper surface of the foam. A signal processing circuit combines the outputs of the first and second sensing elements to produce a signal that is used to optimize the rate at which defoaming agent is supplied to the vessel. In this manner, the amount of defoaming agent that is u...

MDI-based prepolymers are blown with a substantially nonaqueous blowing agent, such as pressurized air, an polymerized with stoichiometric amounts of polyoxyethylene polyol having at least two hydroxyl equivalents per mole, yielding a hydrophilic foam. The present foams may be extruded, knife-coated or otherwise cast into sheets, or may be fabricated by other known foam preparation techniques. Because the foam is polymerized with polyoxyethylene polyol instead of water, the foam exhibits both su...