Ripper boot including a male carrier and a replaceable female tooth

Abstract

The present invention relates to an improved ripper boot. In particular, the invention relates to a ripper boot having a male carrier portion for engaging a replaceable female tooth or cap having a high tensile tip. The taper lock formed between the cap and carrier ensures that the replaceable ripping cap does not rotate and particulate matter is prevented from entering between walls of the cap and carrier. The ripper boot of the present invention is suitable for use in a range of applications involving the ripping or cleaving of extremely hard material.

1 . A ripper boot comprising:
 a carrier adapted for connection to a shank of a vehicle;   a locking tapered male projection associated with a tip of said carrier;   a replaceable ripping cap including a substantially conical outer shape terminating in a tip of high tensile material, said cap further including a locking tapered bore to mate with said locking tapered male projection such that said cap is non-rotatably secured on said ripper boot carrier by way of locking interference fit such that during use said replaceable ripping cap does not rotate and said locking interference fit prevents particulate matter from entering between walls of said cap and said male projection.   
     
     
         2 . The ripper boot as defined in  claim 1  wherein said locking tapered male projection is inwardly tapered such that its cross sectional dimension is less at the tip of the carrier, said locking tapered bore having a corresponding inward taper. 
     
     
         3 . The ripper boot as defined in  claim 1  wherein said cap is removable from the male projection when said taper lock is broken. 
     
     
         4 . The ripper boot as defined in  claim 1  wherein the cross section of the male projection and the cap bore is square. 
     
     
         5 . The ripper boot as defined in  claim 1  wherein the cross section of the male projection and the cap bore is circular. 
     
     
         6 . The ripper boot as defined in  claim 1  wherein the carrier includes a central longitudinal axis. 
     
     
         7 . The ripper boot as defined in  claim 6  wherein said male projection and engaged cap extend along said longitudinal axis such that the angle of attack is greater than the angle of the surface being worked. 
     
     
         8 . The ripper boot as defined in  claim 6  wherein said male projection is constructed to extend at an angle upwards from said carrier longitudinal axis such that the angle of attack of the engaged cap is substantially parallel with the angle of the surface being worked. 
     
     
         9 . The ripper boot as defined in  claim 8  wherein said angle of attack is between zero and ninety degrees upwards from the longitudinal axis of the carrier. 
     
     
         10 . The ripper boot as defined in  claim 8  wherein said angle of attack is between zero and ten degrees upwards from the longitudinal axis of the carrier. 
     
     
         11 . The ripper boot as defined in  claim 8  wherein said angle of attack is six degrees upwards from the longitudinal axis of the carrier. 
     
     
         12 . The ripper boot as defined in  claim 1  wherein the male projection and the cap include transverse channels extending there through which become co-axially aligned when the projection is engaged within said cap bore, to allow for insertion of a retaining pin. 
     
     
         13 . The ripper boot as defined in  claim 1  wherein said high tensile tip is constructed at least partially of tungsten metal. 
     
     
         14 . The ripper boot as defined in  claim 1  wherein said carrier includes two or more male projections adapted to engage two or more removeable caps. 
     
     
         15 . A ripper boot comprising:
 a carrier including a male projection at a working end thereof;   a replaceable ripping cap including an associated socket;   said replaceable ripping cap being secured to said carrier by way of an interference fit so that during use said replaceable ripping cap does not rotate;   said interference fit prevents particulate matter from entering between walls of said cap and said associated socket;   said male projection has a tapered wall;   said cap has a tapered socket to mate with said tapered wall; and wherein:   said cap has a substantially conical outer shape and terminates in a tip constructed at least partially of high tensile material;   said cap and said carrier engage by a mating relationship between said socket and said correspondingly shaped male projection, said socket and male projection being inwardly tapered to thereby establish a taper lock between the carrier and cap, said cap being removable from the carrier when said taper lock is broken.   
     
     
         16 . The ripper boot as defined in  claim 15  further including retaining means for retaining said cap on said carrier. 
     
     
         17 . The ripper boot as defined in  claim 16  wherein said retaining means is in the form of a retaining pin, the carrier projection and cap including transverse channels extending there through which become co-axially aligned when the cap is fully engaged on said male projection, to allow for insertion of said retaining pin.