Abstract: A system for heating the contents of a supply hopper mounted to a pavement patching vehicle. The vehicle has a remotely controlled distribution hopper mounted at the end of an articulated arm. The vehicle exhaust gas is directed to the supply hopper to keep the asphalt therein warm and to the distribution hopper to heat the underlying pavement. The supply hopper is of double wall construction with the heated exhaust gas directed in a circuitous path along the sidewall and the top before passing into the atmosphere.

Abstract: An improved pavement patching vehicle includes a movable distribution hopper and a supply hopper having an opening for discharging patching material into an underlying distribution hopper. The supply hopper, heated by catalytic radiant panels, includes a bottom, sidewalls and a pivotal hood. The supply hopper is mounted to the vehicle by a pair of lift arms and a pair of support arms. The lift arms are secured to a common lift shaft mounted to the vehicle parallel to the vehicle axis. The lift shaft is driven by a single piston and cylinder combination mounted generally parallel to the vehicle axis through a gear drive. This drive is compact due to positioning of the piston and cylinder combination.

Abstract: A pavement patching vehicle includes an asphalt supply hopper and a distribution hopper mounted to the front of the vehicle at the end of a remotely controlled articulated arm. Asphalt is deposited into a pothole from the distribution hopper for compaction by a tamper, which is mounted to the distribution hopper by a combination tamper positioner and vibration isolator. The combination uses a specially adapted gas over hydraulic liquid in a piston and cylinder arrangement for this purpose. The articulated segments are moved through piston and cylinder drives mounted within the hollow arm segments and coupled to pivot shafts at the joints. The distribution hopper can be secured to the front of the vehicle by a support bracket on the vehicle and a pivotal support latch on the distribution hopper. An actuator bar extends from the tamper and engages a latch actuator, which extends from the support latch, when the tamper is raised.