Methods for applying foam

Details Methods for applying foam Methods for applying foam

1995-09-14

1999-03-16

Weldon, Kevin

Fishing, trapping, and vermin destroying

Vermin destroying

431321, A01M 700

Patent

active

058814930

ABSTRACT:
A foam sprayer apparatus comprises a container and a manual air pump carried by the container. The pump is operable to manually pump air into the container and create an air head therein. A discharge channel establishes fluid communication between the interior and exterior of the container. The channel contains an air opening located inside the tank and above a level to which a supply of foaming composition is to be filled. An inlet of the discharge channel is located below the level to which a supply of foaming composition is to be filled. A foaming chamber is also included for causing turbulence in a fluid received from the discharge channel. A discharge valve controls the flow of fluid through the discharge channel and foaming chamber. When the valve is open, fluid flows from the discharge channel to the foaming chamber, and from the foaming chamber to a nozzle. The nozzle is in fluid communication with the outlet of the foaming chamber. The nozzle is normally coupled to a spray wand which is placed between the discharge valve and nozzle. The nozzle functions to discharge, under pressure, foam received from the foaming chamber when the discharge valve is opened. Methods of applying foam are also contemplated. One such method concerns the treatment of insects using an insecticidal foaming composition and a manual compressed-air sprayer which has been modified in accordance with the present invention.

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