Building component

Abstract

An interlocking building component which comprises a generally rectangular hollow main body having operatively top and bottom surfaces and in which the operatively top surface has one or more upwardly extending projections and the operatively bottom surface includes recesses adapted and positioned to receive the projections of a like component in an operatively stacked arrangement.

What is claimed is: 
     
         1 . A building component, comprising:
 a hollow generally rectangular main body having a pair of opposing lateral walls and a pair of opposing end walls defining an operatively top surface and an operatively bottom surface;   a dividing central wall having said top surface and extending between said lateral walls in substantially parallel relation to said end walls to define two hollow half portions of said main body;   a generally rectangular first projection extending upwardly from said top surface at the midportion of said lateral walls in each of said half portions so that there are two spaced apart first projections on each of said lateral walls, said first projections on said opposing lateral walls being co-linear;   a generally rectangular second projection extending upwardly from said top surface at the midportion of each of said end walls, said second projections on said opposing end walls being co-linear;   a generally rectangular third projection extending upwardly from the midportion of said top surface of said central wall, said third projection being co-linear with said second projections;   a generally rectangular first recess extending upwardly from said bottom surface at the mid portion of said lateral walls in each of said half portions so that there are two spaced apart first recesses on each of said lateral walls, said first recesses on said opposing lateral walls being co-linear, each first recess being of the same size as said first projection so that said first projection can be slidably received therein;   a generally rectangular second recess extending upwardly from said bottom surface at the mid portion of each of said end walls, said second recesses on said opposing end walls being co-linear, each second recess being of the same size as said second projection so that said second projection can be slidably received therein;   the bottom of said central wall being recessed upwardly from said bottom surface to define an elongate opening between said lateral walls that is at least as long as said third projection;   whereby a second building component the same as said building component can be inverted and positioned on and in interlocking relation with said building component so that said first projections are received in the first recesses of the second building component, said second projections are received in the second recesses of the second building component, and said third projection is received in the elongate opening of the second building component.   
     
     
         2 . The building component of  claim 1  wherein it is made of concrete. 
     
     
         3 . The building component of  claim 1  wherein said first projections, said second projections and said third projection are of the same size so that a half portion of the inverted second building component can be positioned on either of said half portions of said building component in lateral alignment therewith or in perpendicular relation thereto. 
     
     
         4 . The building component of  claim 3  wherein it is made of concrete. 
     
     
         5 . The building component of  claim 3  wherein said lateral walls, said end walls and said central wall are of substantially the same thickness.