System and apparatus for foam dispensing with adjustable orifice flow regulating device and method of using same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 21, 2004
Grant Date -
Aug 14, 2003
app pub date -
Sep 11, 2002
filing date -
Feb 8, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dispensing system for mixing at least first and second components and dispensing an expanding foam is disclosed. The system includes separate vessels, each containing a foam component, and a dispensing apparatus. The dispensing apparatus includes a cartridge assembly mounted on a body assembly. The cartridge assembly includes a mix chamber and first and second ports, each for supplying a foam component to the mix chamber. A pair of adjusting valves is mounted to the cartridge assembly with each valve operable to adjust the flow of each foam component to the mix chamber. A pair of hoses connects the vessels to the cartridge assembly. Each adjusting valve is a variable orifice device in the cartridge assembly having the capability of varying the flow area of the port. The present invention also includes a method for adjustably controlling, at the dispensing apparatus, the flow of each of the first and second components to the mixing chamber to alter their ratio therein. Additionally, the throughput of the dispensing apparatus can be controlled by the variable orifice devices.
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