Abstract: An apparatus for remotely locking and unlocking a door on a transportable container, the container sized and configured to ride atop a vehicle, includes latch means mountable to the container for locking shut and unlocking the container door relative the container, linkage means mountable to the container, connected with the latch means and being for actuating the latch means, and drive means mountable to the vehicle and being for driving the linkage means, the drive means being operable remotely by a driver of the vehicle.

Abstract: A self dumping hopper includes a base; a container having a pair of runners sized and configured to enable the container to rock upon the base, along a path and between a non-dumping rest position and a rearwardly angled dumping position; a guide assembly connected to either the base or the container, the guide assembly defining at least one guide path opening and being for engaging with a guide pin to restrain the container to rock within a desired path; at least one guide pin connected to the other of the base and the container and positioned to extend into and follow the at least one guide path opening; and, a latch mechanism connected to the base and container for releasable holding the container in the rest position, the latch mechanism having latched and unlatched positions and having a biasing assembly for urging the latch mechanism to the unlatched position when in the unlatched position.