Patent ID: 6095616
Filing Date: 2000-08-01
Classification: B60P,B61D

Abstract:
A wheel supported wagon for transporting a flowable granular material, comprising a container defining a chamber adapted to receive a volume of the material, said container having a bottom wall and sloping side walls with a bottom discharge opening within one of said side walls, a set of parallel spaced guide tracks mounted on said one side wall on opposite sides of said discharge opening, a generally flat outer door panel supported by said tracks for movement adjacent said one side wall between an upper open position and a lower closed position covering said discharge opening, a generally flat inner door panel supported by said tracks for movement adjacent said outer door panel and positioned inwardly toward said chamber from said outer door panel for resisting the pressure of the material within said chamber, said inner door panel having a bottom edge portion with a recess defining a material flow metering passage extending upwardly from said bottom wall, and an actuator for first raising said outer door panel to permit material to flow only through said metering passage and under said outer door panel for releasing pressure of the material against said inner door panel and thereafter raising said inner door panel to permit a substantially larger flow of material through said discharge opening under both of said door panels.