Cleaning spray nozzle
A spray nozzle ( 10 ) has a nozzle body ( 20 ) with an inlet ( 24 ) and an outlet ( 26 ). The inlet ( 24 ) is attachable to a hose ( 2 ). The outlet ( 26 ) is configured to receive a chemically-containing cartridge ( 70 ). A forwardly-disposed trigger ( 30 ) is finger-actuated and operates the valve ( 52 ) of a first valve assembly ( 50 ) to control water flow through the nozzle ( 10 ). An inlet conduit ( 56 ) connects the first valve assembly ( 50 ) to a second valve assembly ( 60 ). The second valve assembly ( 60 ) is thumb-actuated by a toggle ( 40 ) to pass water through the nozzle ( 10 ) as clean water supplied to the nozzle ( 10 ) via the hose ( 2 ) or through the nozzle ( 10 ) as chemical-added water that is created by a venturi-induced assembly ( 80 ) contained within the cartridge ( 70 ).
1. A hand-held cleaning spray nozzle which comprises
a nozzle body including an inlet end connectable to one end of a hose, an outlet end including an outlet end opening, the outlet end opening being configured to receive a chemical dispensing assembly, said assembly having a chemical-containing cartridge disposed within it, and a water flow continuum disposed between the inlet and the outlet ends,
a forwardly-disposed and finger-actuated nozzle trigger, such nozzle trigger being operable to selectively actuate a first valve assembly to permit water flow through the nozzle body, and
a rearwardly-disposed and thumb-actuated nozzle toggle, the nozzle toggle being operable to actuate a second valve assembly comprising a first toggle valve and a second toggle valve, the toggle valves being movable within the second valve assembly to selectively actuate said chemical dispensing assembly to release chemical from the cartridge and into the water flow.
2. The spray nozzle of claim 1 wherein the nozzle body has a first body housing member and a complementary second body housing member, the housing members being made of a molded plastic material and being secured together to form a hollow housing of the nozzle body.
3. The spray nozzle of claim 1 wherein the first valve assembly includes an inlet flow conduit that extends between the inlet end of the nozzle body and the second valve assembly, the trigger valve being disposed to control water flow through the nozzle.
4. The spray nozzle of claim 3 wherein the second valve assembly further includes a first valve cavity and a second valve cavity, the first toggle valve being slidably movable within a first valve cavity and the second toggle valve being slidably movable within a second valve cavity, and the second valve assembly further includes a first flow conduit and a second flow conduit wherein a water flow continuum exists alternatively through the first flow conduit or through the second flow conduit.
5. The spray nozzle of claim 4 wherein the toggle is moveable between two positions, a first position that creates a flow continuum between the inlet conduit, the first valve cavity of the second valve assembly and through the first flow conduit, and a second position that creates a flow continuum between the inlet conduit, the second valve cavity of the second valve assembly and through the second flow conduit.
6. The spray nozzle of claim 5 wherein the first toggle position closes off the second flow conduit and the second toggle position closes of the first flow conduit.
7. The spray nozzle of claim 1 wherein the outlet end opening includes means for releasably receiving the chemical-containing cartridge.
8. The spray nozzle of claim 7 wherein the cartridge receiving means comprises a screw-like attachment structure.
9. The spray nozzle of claim 1 wherein the chemical-containing cartridge includes a venturi assembly, the venturi assembly including a forward end, a rearward end, and a central portion extending between the forward end and the rearward end, the rearward end including an aperture inlet, and wherein the venturi assembly further including an inlet port having a venturi aperture defined in it.
10. The spray nozzle of claim 9 wherein the rearward end of the venturi assembly includes a duckbill valve that has a pressure-sensitive opening defined in it to allow for inlet flow through the valve but which prevents outlet flow from it.
11. The spray nozzle of claim 10 wherein the chemical-containing cartridge includes an inner surface and the venturi assembly is sealingly received within the cartridge and a cavity is formed about the central portion of the venturi assembly and the inner surface of the cartridge, the cavity being adapted to retain a chemical within it and to release such chemical into the water flow upon actuation of the toggle.
12. The spray nozzle of claim 11 wherein the chemical-containing cartridge is substantially cylindrical in shape.
13. The spray nozzle of claim 12 wherein the chemical-containing cartridge is disposable.
14. The spray nozzle of claim 13 wherein the chemical-containing cartridge is made of a molded plastic material.
15. The spray nozzle of claim 14 wherein the chemical-containing cartridge is made of a translucent plastic material.