Patent ID: 6283329
Filing Date: 2001-09-04
Classification: B29B,B29K

Abstract:
An apparatus for applying a multi-component foamable fluid plastic material, the material including at least two reactant fluids configured to form a foam when heated and mixed, the apparatus comprising:an applicator gun including:a support body structure, a mixing chamber supported in the support body structure and configured to receive two reactant fluids for mixing;two mixing chamber fluid inlets disposed in the support body structure in fluid communication with the mixing chamber and configured to direct the respective reactant fluids into the mixing chamber through respective fluid inlet openings; anda reactant fluid dispenser connected to the applicator gun and configured to supply at least one of the reactant fluids to the applicator gun mixing chamber through at least one of the mixing chamber fluid inlets at a constant flow rate to continuously provide the first reactant fluid in proper proportion to a second one of the reactant fluids despite viscosity and/or density differences between the two fluids;the cross-sectional areas of the fluid inlet openings being different, the cross sectional areas being measured perpendicular to the direction of reactant fluid flow through the fluid inlet openings.