Asphalt Cutting Attachment

Abstract

The present invention is directed to a new and improved asphalt cutter attachment for cutting asphalt surface of a roadway or the like, for example, for facilitating cutting an edge of a roadway or driveway for repairing and installing new asphalt. The attachment includes an elongated baseplate having a top and bottom surface, a plurality of angularly disposed cutting teeth positioned along said bottom surface, and an engagement plate including an engagement channel for receiving the lower edge of an earth moving bucket.

I claim: 
     
         1 . An asphalt cutter attachment adapted to be mounted to the blade or bucket of a conventional earth moving vehicle, the bucket having a lower edge, a top surface and a bottom surface, the bucket angularly adjustable, comprising:
 an elongated baseplate having a top and bottom surface, and a front and rear end;   a plurality of angularly disposed cutting teeth positioned along said bottom surface of said elongated baseplate;   an engagement plate disposed on said top surface of said elongated baseplate, said engagement plate oriented   transversely along said elongated baseplate, said engagement plate further including an engagement channel for receiving the lower edge of the earth moving bucket.   
     
     
         2 . An asphalt cutter attachment as in  claim 1  wherein said engagement channel includes a push bar, said push bar in contact with the lower edge of the earth moving bucket when said earth moving bucket fully engages said engagement channel. 
     
     
         3 . An asphalt cutter attachment as in  claim 2 , wherein said engagement plate extends a width greater than said baseplate, and said push bar extends a width greater than said engagement plate. 
     
     
         4 . An asphalt cutter attachment as in  claim 1 , wherein said engagement plate is angularly disposed on said front end of said elongated baseplate, said engagement channel defined by the angle between said baseplate top surface and said engagement plate. 
     
     
         5 . An asphalt cutter attachment as in  claim 1 , wherein said plurality of angularly disposed cutting teeth comprise a removeable cutting tip. 
     
     
         6 . An asphalt cutter attachment as in  claim 1 , wherein said plurality of angularly disposed cutting teeth rotate 360 degrees. 
     
     
         7 . An asphalt cutter attachment as in  claim 1 , wherein said plurality of angularly disposed cutting teeth includes an “F” positioned cutting tooth and an “A” positioned cutting tooth, said A positioned cutting tooth having a pitch angle of about 75 to about 90 degrees, and said “F” and said “A” positioned cutting teeth having a yaw angle of about 0 degrees. 
     
     
         8 . An asphalt cutter attachment as in  claim 7 , wherein said plurality of angularly disposed cutting teeth include a “B”, “C”, “D”, and “F” positioned cutting teeth, said “B”, “C”, “D”, and “F” positioned cutting teeth having a pitch angle of about 25 to about 75 degrees. 
     
     
         9 . An asphalt cutter attachment as in  claim 8 , wherein said “B”, “C”, “D”, and “F” positioned cutting teeth, have a yaw angle of about 22 degrees, wherein said B″, “C”, “D”, and “F” positioned cutting teeth are staggered. 
     
     
         10 . An asphalt cutter attachment as in  claim 8 , wherein said B″, “C”, “D”, and “F” positioned cutting teeth are staggered, and are angularly offset to dictate the width of the resultant cut path. 
     
     
         11 . An asphalt cutter attachment as in  claim 2 , wherein said elongated baseplate top surface engages said bucket bottom surface  25 B when said earth moving bucket fully engages said engagement channel. 
     
     
         12 . An asphalt cutter attachment as in  claim 11 , wherein at least two of said angularly disposed cutting teeth extend beyond said lower edge of the earth moving bucket when said earth moving bucket fully engages said engagement channel. 
     
     
         13 . An asphalt cutter attachment as in  claim 2 , wherein said push bar pivots about said lower edge of said earth moving device bucket, said angular orientation of said cutter attachment adjustable when said bucket is angularly positioned, said baseplate top surface moving from a position between full and semi engagement with said bucket bottom surface.