The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2004
Filed:
Sep. 11, 2002
E. Richard Huber, Houston, TX (US);
Pat L. Murray, Spring, TX (US);
Robert L. Ferrante, Davie, FL (US);
Pat Donahue, The Woodlands, TX (US);
Polyfoam Products, Inc., Tomball, TX (US);
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.