Improvement in a semi - Trailer unloading by the fund improvement in a semi trailer unloading by the fund

摘要

A bottom-dumping semi-trailer including a closure assembly mounted beneath a hopper having an opening in the lower end portion thereof. The closure assembly is adapted to automatically open and close along a line either parallel to or transverse to the longitudinal axis of the trailer depending upon the positioning of the closure assembly relative to the trailer. Means are disclosed for controlling the movement of the two closure members of the closure assembly relative to each other. Also disclosed is a bottom-dumping semi-trailer including a second hopper with a second closure assembly mounted therebeneath.