Patent ID: 6962490

Claim:
A concrete extruder attachment for a vehicle, comprising: a hopper adapted to hold flowable concrete, the hopper having an upper concrete inlet and a lower concrete outlet; a slip form connected to the lower concrete outlet; means for causing concrete to flow from the hopper through the lower concrete outlet to the slip form; a mounting adapted to rigidly mount to one of a front or a back of a motor vehicle; a hopper support arm secured to the hopper, the hopper support arm being pivotally mounted to the mounting for pivotal movement about a substantially vertical pivot axis between a first position with the hopper extending toward a first side of the vehicle and a second position with the hopper extending toward a second side of the vehicle; means for selectively locking the hopper support arm in a selected one of the first position or the second position, such that upon release of the locking means the hopper support arm is free to pivot about the pivot axis and swing in an arc to an other of the first position or the second position.