Detachable articulated grading implement for backhoe interchange

Abstract

A grading implement for detachable affixation to a dipper of heavy equipment, the grading implement rotatable axially about a rotary point on a mounting bracket by an eccentric hydraulic piston, the grading implement adapted to allow operator control of blade orientation relative to a ground surface.

What is claimed is: 
     
         1 . A releasable grading implement detachably affixable to a dipper of a backhoe, the grading implement comprising:
 a concave blade more than twice as wide laterally than the concave blade is tall, the concave blade having two blade sides protruding laterally beyond a width of the mounting bracket;   a ground-engaging blade detachably affixed to a lower surface of the concave blade;   two flanges disposed at lateral terminal ends of the concave blade;   a mounting bracket adapted to releasably affix the concave blade to a dipper of a backhoe;   an hydraulic piston affixed between the mounting bracket and the blade, the hydraulic piston affixed at a proximal end to the mounting bracket and affixed at a distal end to a blade side protruding laterally from the mounting bracket;   wherein the hydraulic piston adapted to rotate the concave blade axially around about the mounting bracket such that orientation of the concave blade to a ground surface may be adjusted by an operator to keep the blade parallel to the ground surface.   
     
     
         2 . The grading implement of  claim 1 , further comprising a plurality of proximity sensors affixed to a rearward face of the concave blade. 
     
     
         3 . The grading implement of  claim 1 , further comprising a second hydraulic piston adapted to adjust a pitch angle of the concave blade relative to the ground surface. 
     
     
         4 . The grading implement of  claim 1 , wherein the blade is hingedly connected to the mounting bracket. 
     
     
         5 . The grading implement of  claim 1 , wherein the blade is hingedly connected to the mounting bracket at a rotary point below the proximal end of the hydraulic piston. 
     
     
         6 . The grading implement of  claim 1 , wherein the hydraulic piston extends laterally from the mounting bracket substantially coplanarially with the concave blade. 
     
     
         7 . A releasable grading implement detachably affixable to a backhoe, the grading implement comprising:
 a concave blade wider laterally than the concave blade is tall, the concave blade having two blade sides protruding laterally beyond a width of the mounting bracket;   a ground-engaging blade detachably affixed to a lower surface of the concave blade;   a mounting bracket adapted to releasably affix the concave blade to a dipper of a backhoe;   one or more hydraulic pistons affixed between the mounting bracket and the blade, the hydraulic pistons affixed at a proximal end to the mounting bracket and affixed at a distal end to a blade side protruding laterally from the mounting bracket;   wherein the hydraulic pistons are adapted to pitch and roll the concave blade axially around about the mounting bracket such that orientation of the concave blade to a ground surface may be adjusted by an operator to keep the blade parallel to the ground surface.   
     
     
         8 . The grading implement of  claim 7 , further comprising a plurality of proximity sensors affixed to a rearward face of the concave blade. 
     
     
         9 . The grading implement of  claim 7 , further comprising a second hydraulic piston adapted to adjust a pitch angle of the concave blade relative to the ground surface. 
     
     
         10 . The grading implement of  claim 7 , wherein the blade is hingedly connected to the mounting bracket. 
     
     
         11 . The grading implement of  claim 7 , wherein the blade is hingedly connected to the mounting bracket below the proximal end of the hydraulic piston. 
     
     
         12 . The grading implement of  claim 7 , wherein the hydraulic piston extends laterally from the mounting bracket substantially coplanarially with the concave blade.