Patent ID: 7398981

Claim:
A concrete pumping truck having a forward end and a rear end with a hopper carried at the rear end of the concrete pumping truck, the concrete pumping truck comprising an auxiliary axle system pivotally attached to the rear end of the truck adjacent the hopper, the auxiliary axle system comprising a pair of pivotable wheels and a pair of spaced wheel mounts, each wheel mount being pivotally connected to a respective one of the pair of pivotable wheels, the pivotable wheels being movable between a first position in contact with a ground surface and a second position elevated above the ground surface, the first and second positions and any positions in transition between the first and second positions always maintaining the auxiliary axle system to remain forward of a farthest rearward point of the concrete pumping truck hopper carried at the rear end, excluding any point a boom on the concrete pumping truck is able to reach, as well as remain under any obstruction above the auxiliary axle system that is created by the concrete pumping truck.