Foam producing nozzle
AssigneeRobwen, Inc.
InventorJohn R. Grindley
Life of this patent
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Abstract
A nozzle assembly for aerating a pressurized liquid stream to produce a discharge of foam includes a plurality of arcuate venturi throats in a circular arrangement around the center of the nozzle together with a radial air inlet to each throat which is adjustable by relative rotation of the inlet coupling and the venturi housing. Additional turbulence may be created by a screen downstream of the venturi throats and secondary air may be admitted at that point.
Claims6
In a nozzle assembly adapted for connection to a pressurized liquid conduit, the improvement comprising:
- a cylindrical venturi housing having an arcuate venturi throat disposed intermediate the central axis and the periphery of said housing and extending axially therethrough;
- and
- a radially extending air inlet passage communicating at its inner end with said throat and located at substantially the most constricted portion thereof.
In a nozzle assembly adapted for connection to a pressurized liquid conduit, the improvement comprising:
- a cylindrical venturi housing having a plurality of arcuate venturi throats spaced circumferentially form each other and extending axially through said housing parallel to the axis thereof;
- and
- a plurality of radially extending air inlet passages each communicating at its inner end with one of said throats and located at substantially the most constricted portion thereof.
Dependencies are inferred from the claim text.