A container used for transporting dry bulk product which can be loaded and unloaded using a pneumatic mechanism and without need for tipping the container, comprising a plurality of hoppers, an external frame, a unique method of connecting the hoppers to the frame using skirt rings at the ends of the...http://www.google.fr/patents/US5647514?utm_source=gb-gplus-shareBrevet US5647514 - Dry bulk pressure differential container with external frame support
Dry bulk pressure differential container with external frame support
