Road Repair Tractor

Abstract

A road repair tractor adapted for smoothing asphalt that has been laid into a work-trench, dug in a roadway. The tractor includes a body supporting an engine and defining a cockpit. Also, laterally spaced first and second support and motive force assemblies are operatively driven by the engine and support the body. A smoothing device is supported by the body and has a width that is adjustable from a most narrow width of between 40 cm and 80 cm to a widest width of between 1 meter and 2.5 meters. The smoothing device also includes a smoothing blade assembly, having a bottom edge, deployed between a pair of asphalt side-spill guards. Finally, a power actuating system includes controls located in the cockpit that permit a user seated in the cockpit to change the adjustable width of the smoothing device and to raise and lower the smoothing device relative to the body.

1 . A road repair tractor adapted for smoothing asphalt that has been laid into a work-trench, dug in a roadway and comprising:
 (a) a body supporting an engine and defining a cockpit adapted to accommodate a person;   (b) laterally spaced first and second support and motive force assemblies, operatively driven by said engine and supporting said body;   (c) a smoothing device, supported by said body and having a width that is adjustable from a most narrow width of between 40 cm and 80 cm to a widest width of between 1 meter and 2.5 meters and including a smoothing blade assembly, having a bottom edge, deployed between a pair asphalt side-spill guards; and   (d) a power actuating system including controls located in said cockpit and permitting a user seated in said cockpit to change said adjustable width of said smoothing device and to raise and lower said smoothing device relative to said body.   
     
     
         2 . The tractor of  claim 1 , wherein said support and motive force assemblies are tread assemblies comprising a tread belt driven by drive-wheels. 
     
     
         3 . The tractor  claim 1 , wherein said support and motive force assembly are wheels adapted to contact ground. 
     
     
         4 . The tractor of  claim 1 , wherein said power actuating system is hydraulic. 
     
     
         5 . The tractor of  claim 1 , wherein said smoothing blade assembly is made of three abutting sheets moveable laterally relative to each other, to expand or contract said smoothing device. 
     
     
         6 . The tractor of  claim 1 , wherein said three abutting sheets comprise two outer sheets and an inner sheet, and wherein said two outer sheets each have an attached side guard.