Compositions – Inorganic luminescent compositions – Tungsten containing
Patent
1980-10-03
1983-08-02
Lovering, Richard D.
Compositions
Inorganic luminescent compositions
Tungsten containing
118300, 222146R, 252359E, 261DIG26, 4272071, 427244, B01J 1300, B01F 304
Patent
active
043965296
ABSTRACT:
A method and apparatus for producing a coherent or extruded output stream of viscous liquid containing a dispersed gas to form a foam. The liquid is pressurized and delivered to apparatus having an internal chamber which presents a flow space for the flow of the liquid through it as an integral stream. A gas is introduced under pressure into the liquid, through an opening to the chamber across which the liquid sweeps, to form an unstable mixture of the gas in the liquid. The gas and liquid mixture is not further pressurized by pumping once the gas and liquid have been contacted, but the unstable mixture is maintained under pressure while it flows from the chamber to a restricted outlet orifice which can be closely adjacent to the chamber. At the outlet the pressure of the gas and liquid mixture is suddenly reduced by forcibly ejecting the mixture through the restricted orifice. A coherent stream of the gas/liquid mixture is produced wherein the gas substantially expands to form a foam.
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Price Richard P.
Scholl Charles H.
Lovering Richard D.
Nordson Corporation
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