Adjustable foaming chamber stem for foam-applying nozzle

Details Adjustable foaming chamber stem for foam-applying nozzle Adjustable foaming chamber stem for foam-applying nozzle

1989-04-27

1991-05-07

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Combining of separately supplied fluids

And valving means controlling flow for combining

2394245, 239432, 239520, 2395811, A62C 3112

Patent

active

050129791

ABSTRACT:
A quickly adjustable foaming chamber stem for a foam-applying fire-fighting nozzle wherein the fire-fighter can quickly switch from applying on optimum foam to a stream with an optimum throw. The stem is comprised of a deflector plate and a mixing plate that define a foaming chamber there between, the deflector plate having ducts that, when open, communicate a portion of the liquid and foam-stabilizing concentrate into the chamber to form a foam. The foaming chamber, maintained at approximately atmospheric pressure, forms a small homogeneously bubbled maximum foam through liquid from the ducts striking and reflecting from the mixing plate, causing thereby turbulence and agitation. Surface portions of the mixing plate are inclined to maximize agitation.

REFERENCES:
patent: 2086711 (1937-07-01), Friedrich
patent: 3094171 (1963-06-01), Gagliardo
patent: 3188009 (1965-06-01), Miscovich
patent: 3236458 (1966-02-01), Ramis
patent: 4224956 (1980-09-01), Klein
patent: 4497442 (1985-02-01), Williams
patent: 4640461 (1987-02-01), Williams

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