Abstract: Truck-transportable manually positionable apparatus for blending and dispensing a mixture of liquid asphalt emulsion and sand to fill cracks in pavement includes a support on which a sand hopper and blending/dispensing device are mounted. The device includes a housing having a rotatable sand impeller therein driven by a pneumatic motor and having a valved sand inlet port above the impeller, a pressurized air inlet port between the sand port and impeller (supplied from the same source as the motor), a mixture outlet port below the impeller, and a valved emulsion inlet port between the impeller and mixture outlet port. Gravity fed sand from the hopper is forcably propelled through the housing of the device toward the mixture outlet by the impeller and compressed air, and is mixed with emulsion just prior to exiting the mixture outlet port.

Abstract: Dump-truck mounted apparatus for repairing asphalt comprises a truck engine which drives first and second hydraulic pumps located on the truck chassis. One pump supplies pressurized hydraulic fluid to operate a lift cylinder which raises and lowers the dump truck box, to operate hydraulic tools and to drive a hydraulic motor which drives an emulsion pump for expelling liquid emulsion from an emulsion storage tank which are located on a cabinet detachably mounted on the dump truck box. The other pump supplies pressurized hydraulic fluid to operate a hydraulic motor on the cabinet which, in turn, drives an air compressor on the cabinet to charge a compressed air tank on the cabinet for supplying pneumatic tools. Reeled hoses are provided for supplying hydraulic fluid and compressed air to their respective tools and for supplying emulsion from the storage tank. Engine heat is supplied via a liquid coolant to heaters in the emulsion storage tank and emulsion pump to liquify the emulsion.