V-Blade Snow Plow With Improved Cutting Edge

Abstract

A snow plow assembly comprises an A-frame assembly, a V-blade assembly pivoted to one end of the A-frame assembly, and a lift frame assembly pivoted to the other end of the A-frame assembly, the lift frame assembly adapted to be removably attached to a vehicle. The V-blade assembly comprises a pair of blades hinged together along inboard ends thereof, each blade of the pair of blades including first and second cutting edge plates removably secured to the blade, the first cutting edge plate fabricated of a first material, the second cutting edge plate fabricated of a second material, the first material having a greater resistance to abrasion wear than the second material.

1 . A snow plow assembly comprising:
 an A-frame assembly,   a V-blade assembly pivoted to one end of said A-frame assembly, and   a lift frame assembly pivoted to the other end of said A-frame assembly, said lift frame assembly adapted to be removably attached to a vehicle,   said V-blade assembly comprising:   a pair of blades hinged together along inboard ends thereof,   each blade of said pair of blades including first and second cutting edge plates removably secured to said blade,   said first cutting edge plate fabricated of a first material,   said second cutting edge plate fabricated of a second material,   said first material having a greater resistance to abrasion wear than said second material.   
     
     
         2 . The snow plow assembly of  claim 1  wherein said first cutting edge plate is mounted to said blade outboard of said second cutting edge plate. 
     
     
         3 . The snow plow assembly of  claim 2  wherein said first and second materials are carbon steel, and wherein said first material has a higher carbon content than said second material. 
     
     
         4 . The snow plow assembly of  claim 3  wherein said second material is carbon steel in a range of about 1020 carbon steel to about 1045 carbon steel, and said first material is carbon steel above about 1050 carbon steel. 
     
     
         5 . The snow plow assembly of  claim 4  wherein said second material is 1044 carbon steel and said first material is 1080 carbon steel. 
     
     
         6 . The snow plow assembly of  claim 4  wherein said second material is 1044 carbon steel and said first material is 1090 carbon steel. 
     
     
         7 . The snow plow assembly of  claim 2  wherein said second cutting edge plate has a first outboard planar portion and a second inboard planar portion, said first planar portion mounted to said blade, said second planar portion extending rearwardly from said first planar portion. 
     
     
         8 . The snow plow assembly of  claim 7  wherein said second planar portion intersects said first planar portion along a line which forms an angle of about 102 degrees relative to a lower edge of said first planar portion. 
     
     
         9 . The snow plow assembly of  claim 8  wherein said second planar portion forms an angle of about 62 degrees relative to said first planar portion when viewed from a plane that is perpendicular to said line. 
     
     
         10 . The snow plow assembly of  claim 9  wherein said first planar portion is about 8 inches long and about 6 inches high, a lower trailing edge of said second planar portion is about 3 inches from a rear surface of said first planar portion, and an upper trailing edge of said second planar portion is about 1 inch from a rear surface of said first planar portion. 
     
     
         11 . The snow plow assembly of  claim 10  wherein said first and second planar portions are about 0.5 inch thick. 
     
     
         12 . A cutting edge plate assembly adapted to be removably secured to a V-blade assembly of a snow plow, said cutting edge plate assembly comprising:
 first and second cutting edge plates adapted to be removably secured to each blade of the V-blade assembly,   said first cutting edge plate fabricated of a first material,   said second cutting edge plate fabricated of a second material,   said first material having a greater resistance to abrasion wear than said second material.   
     
     
         13 . The cutting edge plate assembly of  claim 12  wherein said first cutting edge plate is mounted to said blade outboard of said second cutting edge plate. 
     
     
         14 . The cutting edge plate assembly of  claim 13  wherein said first and second materials are carbon steel, and wherein said first material has a higher carbon content than said second material. 
     
     
         15 . The cutting edge plate assembly of  claim 14  wherein said second material is carbon steel in a range of about 1020 carbon steel to about 1045 carbon steel, and said first material is carbon steel above about 1050 carbon steel. 
     
     
         16 . The cutting edge plate assembly of  claim 15  wherein said second material is 1044 carbon steel and said first material is 1080 carbon steel. 
     
     
         17 . The cutting edge plate assembly of  claim 15  wherein said second material is 1044 carbon steel and said first material is 1090 carbon steel. 
     
     
         18 . The cutting edge plate assembly of  claim 13  wherein said second cutting edge plate has a first outboard planar portion and a second inboard planar portion, said first planar portion mounted to said blade, said second planar portion extending rearwardly from said first planar portion. 
     
     
         19 . The cutting edge plate assembly of  claim 18  wherein said second planar portion intersects said first planar portion along a line which forms an angle of about 102 degrees relative to a lower edge of said first planar portion. 
     
     
         20 . The cutting edge plate assembly of  claim 19  wherein said second planar portion forms an angle of about 62 degrees relative to said first planar portion when viewed from a plane that is perpendicular to said line. 
     
     
         21 . The cutting edge plate assembly of  claim 20  wherein said first planar portion is about 8 inches long and about 6 inches high, a lower trailing edge of said second planar portion is about 3 inches from a rear surface of said first planar portion, and an upper trailing edge of said second planar portion is about 1 inch from a rear surface of said first planar portion. 
     
     
         22 . The cutting edge plate assembly of  claim 21  wherein said first and second planar portions are about 0.5 inch thick. 
     
     
         23 . The snow plow assembly of  claim 2  wherein said second cutting edge plate has a first outboard portion and a second inboard planar portion, said first portion mounted to said blade, said second portion extending rearwardly from said first portion. 
     
     
         24 . The cutting edge plate assembly of  claim 12  wherein said second cutting edge plate has a first outboard portion and a second inboard planar portion, said first portion mounted to said blade, said second portion extending rearwardly from said first portion. 
     
     
         25 . The assembly of  claim 23  or  claim 24  wherein said first portion is mounted to a rear side of said blade. 
     
     
         26 . The assembly of  claim 25  wherein said first portion comprises a bracket having a pair of legs, a first one of said legs being secured to said blade, a second one of said legs being secured to said second portion. 
     
     
         27 . The assembly of  claim 26  wherein said first one of said legs is secured to said blade with bolts and nuts, and said second one of said legs is secured to said second portion by welding. 
     
     
         28 . The assembly of  claim 27  wherein said bracket includes a pair of gussets, one of which is located at each edge of said bracket, and each of which is secured to said first and second legs of said bracket. 
     
     
         29 . The assembly of  claim 28  wherein said gussets are secured to said first and second legs of said bracket by welding. 
     
     
         30 . The assembly of  claim 28  wherein said gussets are generally triangularly shaped. 
     
     
         31 . The assembly of  claim 30  wherein said bracket has a vertical extent which is less than a vertical extent of said second portion. 
     
     
         32 . The assembly of  claim 1  wherein said first and second cutting edge plates are removably secured to a trip cutting edge mounting structure, said trip cutting edge mounting structure being pivoted to said blade. 
     
     
         33 . The assembly of  claim 1  wherein said first cutting edge plate is removably secured to a trip cutting edge mounting structure, said trip cutting edge mounting structure being pivoted to said blade, and wherein said second cutting edge plate is removably secured to said first cutting edge plate. 
     
     
         34 . The assembly of  claim 12  wherein said first and second cutting edge plates are adapted to be removably secured to a trip cutting edge mounting structure that is pivoted to the blade. 
     
     
         35 . The assembly of  claim 12  wherein said first cutting edge plate is adapted to be removably secured to a trip cutting edge mounting structure that is pivoted to the blade, and wherein said second cutting edge plate is removably secured to said first cutting edge plate.