Interlocking block

Abstract

An interlocking block for interacting with other like blocks including a body having at least a front face, a rear face, a top face, a bottom face and a pair of side faces. The bottom face can have a plurality of substantially identical parallel transverse indentations but only in the bottom face. The grooves can have a constant cross-section and are spaced apart evenly between the front face and the rear face. There may be at least two substantially identical protrusions only on the top face, each protrusion being parallel with and in vertical alignment with one of the indentations, and receivable within a indentation of a like block. There are fewer protrusions than indentations.

1 . An interlocking block for interacting with other like blocks comprising: 
 (a) a body having at least a front face, a rear face, a top face, a bottom face and a pair of side faces;    (b) a plurality of substantially identical parallel transverse indentations only in the bottom face;    (c) the indentations being of constant cross-section and being spaced apart evenly between the front face and the rear face; and    (d) at least two substantially identical protrusions only on the top face, each protrusion being parallel with and in vertical alignment with one of the indentations, and adapted to engage an indentation of the like block, there being fewer protrusions than indentations.    
   
   
       2 . An interlocking block as claimed in  claim 1  wherein the body in cross section is substantially in the shape of a trapezoid.  
   
   
       3 . An interlocking block as claimed in  claim 2  wherein the side faces are substantially tapered from the front face to the rear face.  
   
   
       4 . An interlocking block as claimed in  claim 3  wherein the interlocking block further comprises a splitting grove extending from the rear face to a point before the front face.  
   
   
       5 . An interlocking block as claimed in  claim 3  wherein the interlocking block further comprises at least one splitting slot extending there across from one side face to the other.  
   
   
       6 . An interlocking block as claimed in  claim 3  wherein the protrusions engage the indentations of other like blocks to position the interlocking block relative to the like block in a forward, backward or flush position.  
   
   
       7 . An interlocking block as claimed in  claim 3  wherein the body has two front faces.  
   
   
       8 . An interlocking block as claimed in  claim 3  wherein the protrusions are oval shaped.  
   
   
       9 . An interlocking block as claimed in  claim 3  wherein the protrusions are circular shaped.  
   
   
       10 . An interlocking block as claimed in  claim 3  wherein the indentations are circular shaped.  
   
   
       11 . An interlocking block as claimed in  claim 3  wherein the indentations are oval shaped.  
   
   
       12 . An interlocking block as claimed in  claim 3  wherein the indentations are groove-like extending from one side face across to the other.  
   
   
       13 . An interlocking block as claimed in  claim 3  wherein indentations extend across from one side face to the other.  
   
   
       14 . An interlocking block as claimed in  claim 3  wherein the front and rear faces have upper and lower edges that are chamfered.  
   
   
       15 . An interlocking block as claimed in  claim 3  wherein the front face and the rear face have different surface characteristics from the side faces and the top and bottom faces.  
   
   
       16 . An interlocking block as claimed in  claim 3  wherein the front face and at least one side face have the same surface characteristics.  
   
   
       17 . An interlocking block as claimed in  claim 3  wherein the interlocking block interacts with like blocks to form a circle with a minimum outside radius of 600 millimetres.