Abstract: A portable tank apparatus has a yoke pivotal on a transverse member between a service towing position and a raised position, and a pair of hingedly connected brace members at the rear of the apparatus and operable by an actuator to retract the wheels or lower the wheels to the ground.

Abstract: Trailer suspension apparatus for increasing the cargo capacity of the trailer. The apparatus includes a U-shaped frame having a transverse structure and upright structures at the ends of the transverse structure. The trailer wheels are disposed in the upright structures with the upright structures being at least in part over the tracks of the wheels. The wheels are resiliently suspended from the upright structures. The transverse structure is positioned beneath the rolling axes of the wheels to permit the trailer body to provide cargo space between the wheels and over the transverse structure.

Abstract: A wheelchair elevator system for installation on the inner side of a passenger vehicle door including a docking member for lockingly receiving a docking prong fixed to the wheelchair to permit lifting of the wheelchair to a position wherein it is securely carried on the door.