US 3,961,754 A · Spray and foam producing nozzle apparatus

Abstract

An improved nozzle apparatus rapidly convertible, while operating, between spray and foam forming modes of operation. An elongate rigid generally cylindrical first conduit member receives surfactant bearing solution at an inlet port thereof and directs the solution under pressure to a spray forming nozzle connected at an outlet port of the first conduit. A second elongate conduit member coaxially slidably overlies the first conduit member and is movable relative thereto between extended and retracted positions. When in its retracted position, the second conduit member exposes the spray-forming nozzle, which is then enabled to direct a spray pattern of the solution longitudinally outward from the apparatus. When in its extended position, the second conduit member encompasses the spray-forming nozzle, and aspirates the spray therefrom with air to form foam which is ejected longitudinally outward from the second conduit member. Fastener means connecting the first and second conduit members enables rapid positioning of the second conduit member between its retracted and extended positions. Handle means are provided for enabling an operator to hand-carry the nozzle apparatus and to directionally aim the spray and foam ejected therefrom to a target area.

Claims15

Dependent claims

A hand-held spray and foam producing nozzle apparatus, comprising:

a. an elongate rigid conduit member having a passageway extending from an inlet port to an outlet port spaced from said inlet port;
b. a handle connected to said conduit member for enabling an operator to hand-carry the nozzle apparatus and to directionally aim said outlet port thereof;
c. a spray producing nozzle connected to said conduit at its said outlet port, suitable for forming and for directing a spray outwardly therefrom of solution passing under pressure through said passageway;
and
d. means slidably attached in overlying engagement with said conduit member for selectively producing foam from said spray and for directionally ejecting said foam outwardly from said nozzle apparatus.

2 more elements

The combination with a wand-type spray nozzle apparatus having an elongate rigid conduit member defining a passageway extending between inlet and outlet ports, a spray-forming nozzle connected at the outlet port for forming and projecting therefrom a spray pattern of fluid passing under pressure therethrough, and a handle connected to the conduit member for enabling an operator to directionally aim the conduit outlet port, of a foam-producing attachment, comprising:

a. an elongate foam producing tube means connected to the conduit member and being movable between first and second positions relative to the conduit member, said foam producing tube means being operable in its said first position to enable the spray-forming nozzle to uninterruptedly project a spray pattern outwardly therefrom and being operable in its said second position to intercept the formed spray pattern, to convert said intercepted spray into foam when the fluid being sprayed contains a surfactant agent and to project the produced foam longitudinally outward from said foam producing tube means;
and
b. manually operable attachment means for selectively securing said foam producing tube means to said conduit member between said first and second positions.

A convertible spray and foam producing nozzle apparatus, comprising:

a. a first rigid tube member defining an internal passageway extending from an inlet port to an outlet port at one end thereof, said first tube member having an elongate generally cylindrical shaft portion adjacent said outlet port thereof;
b. a spray-forming nozzle connected to said first tube member at its said outlet port for forming a spray of fluid passing under pressure through said outlet port and for directing said spray in a predetermined pattern longitudinally outward from said spray-forming nozzle;
c. foam forming means movably attached to said first tube member between first and second positions for selectively forming foam and for ejecting said foam in the direction longitudinally outward from said spray-forming nozzle, said foam forming means being operable in said first position to enable uninterrupted spray ejection from said spray-forming nozzle, and being operable in said second position to intercept and to convert said spray into foam;
and
d. means connecting said foam forming means to said first tube member for securing said foam forming means between its said first and second positions.

2 more elements

Dependencies are inferred from the claim text.

Spray and foam producing nozzle apparatus

Life of this patent

Spray and foam producing nozzle apparatus

Life of this patent

Abstract

Claims15