Abstract:
A cellular building block including a middle beam and two legs. The cellular building block having the first leg coupled to the middle beam such that the leg is perpendicular to the middle beam and a second leg coupled to the middle beam such that the leg is perpendicular to the middle beam and spaced apart from the first leg, the first leg and the second leg having an inside edge and an outside edge. Having at least one barb located on the inside edge of the first leg and on the inside edge of the second leg and further configured to lock into a recess. The cellular building blocks connect in a two dimensional or three dimensional pattern and a produce a structured material that holds itself together and exhibits beneficial characteristics.

Description:
PRIORITY CLAIM 
       [0001]    This application claims the benefit of U.S. Provisional Application Ser. No. 60/916,927 filed on May 9, 2007, which is herein incorporated by reference in its entirety. 
     
    
     BACKGROUND OF THE INVENTION 
       [0002]    Wood is a preferred material for building structures because it has high strength, low density and it may be sawed, cut and/or have a nail driven into it. However, in some areas, there is a limited supply of wood to use as a building material. There currently exists a need for a replacement for wood that does not contain wood, glue, plastic or hydrocarbons in general. The replacement would have similar characteristics of wood. Finally, it could be manufactured using local materials, without trees and with minimal expense. 
       SUMMARY OF THE INVENTION 
       [0003]    A cellular building block including a middle beam and two legs. The cellular building block having the first leg coupled to the middle beam such that the leg is perpendicular to the middle beam and a second leg coupled to the middle beam such that the leg is perpendicular to the middle beam and spaced apart from the first leg, the first leg and the second leg having an inside edge and an outside edge. Having at least one barb located on the inside edge of the first leg and on the inside edge of the second leg and further configured to lock into a recess. 
         [0004]    A method for using a cellular building block including aligning a guide portion of each leg from a first block with guide portions of a leg from a second block and a third block. Applying pressure sufficient to urge the barb, coupled to legs of the first block, into recesses defined by the leg in the second and third block; and locking the blocks together by confirming that all of the barbs of the first block are in the recesses of the second and third block and the barbs of the second and third block are in the recesses of the first block. A continuation of this process will produce a material where cells hold each other together. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0005]    The preferred and alternative embodiments of the present invention are described in detail below with reference to the following drawings. 
           [0006]      FIG. 1  shows a two-dimensional top view of one embodiment; 
           [0007]      FIG. 2  is a top view showing the basic connection of three cells in a two-dimensional arrangement; 
           [0008]      FIGS. 3A-3D  show multiple connection methods of cells in a two-dimensional arrangement; 
           [0009]      FIGS. 4A-4E  show multiple embodiments of cell end pieces; 
           [0010]      FIGS. 5A-5B  show cells connected vertically and horizontally in one embodiment; 
           [0011]      FIGS. 6A-6B  show cells connected vertically and horizontally with end pieces attached in one embodiment; 
           [0012]      FIG. 7  shows a sample of the force applied to a series of connected cells; 
           [0013]      FIGS. 8A-8C  shows the middle beam intersection of four three dimensional cells; 
           [0014]      FIGS. 9A-9C  shows two two-dimensional cells in a three-dimensional arrangement; 
           [0015]      FIG. 10A-10B  shows cells connected in three dimensions in one embodiment; 
           [0016]      FIG. 11  shows a model 2×4 board with cells designed to present a flat surface; 
           [0017]      FIG. 12  shows a close-up view of the surface of  FIG. 11 ; 
           [0018]      FIG. 13  shows an alternate embodiment using stamped metal sub-parts; and 
           [0019]      FIG. 14  is a two dimensional exemplary embodiment showing a fence made up of cells manufactured from stone. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0020]    In one embodiment a cell uses a variety of different types of materials made separately into cells and connected mechanically using different geometries. These geometries include, but are not limited to, rectangular and prismatic geometries, which provide cohesion and strength based on the geometry of the composition. The different geometries combine materials at a cellular level to produce advantageous characteristics in the resulting composition. The advantageous properties include, but are not limited to, low density, strength, toughness, and/or fire resistance. 
         [0021]      FIG. 1  shows a two-dimensional top view of one embodiment. The cell has a middle beam  10 . The middle beam has a width, a length and a depth. The cell has two legs  12 , each leg connected along the width (X axis) of the middle beam. Each leg has a length and a width. At each end of the legs is a guide  15 . The guide allows for easy connection with another cell. The leg has a barb  35  located on the inside of the leg. The barb is configured to securely lock in the recess  30 . The cell is composed of, but not limited to, at least one of ceramics, metals, concrete, stone, clay and plastic. These cells are made with a machine or manually by a human in the manual process. In one embodiment the cells range from 1 mm to 10 cm. 
         [0022]      FIG. 1  further shows the important dimensions of a cell. The width of the cell W is measured along the cells X axis. The height of the cell H is measured along the cell&#39;s Y axis. The gap between cell middle beam intersections is represented by D. The width of each leg is represented by V. The depth of the middle beam, M, is measured along the cell&#39;s z axis. Finally, U is the width of the middle beam and is measured along its Y axis. 
         [0023]    The following dimensions are derived in one embodiment. The depth of each barb A is derived from the width of each leg V divided by four. The length of each barb B is derived from the depth of the barb multiplied by eight. The distance between the legs P is derived from the basic width of the cell divided by two. The distance between the center lines of the legs Q is derived from the distance between the legs P added to the width of a leg V. The distance between outside lines of the legs R is derived from the distance between the center lines of the legs Q added to the width of the leg V. The length of a leg G is derived from the width of the middle beam U subtracted from the height of the cell H and then divided by two. The resulting number is then multiplied by 0.95 to find the length of the leg. The length of the middle beam S is derived from the gap between adjacent cell middle beams D subtracted from the basic width of the cell W. The distance from the outside of the leg to the middle beam intersection N is derived from the distance between the outside lines of the legs R subtracted from the basic width of the cell W and then divided by two. 
         [0024]    In one embodiment, it is preferred, but not necessary, to have the following relationships. The depth of each barb is less than or equal to the width of each leg divided by two. The length of each barb is greater than two times the depth of the barb. The depth of the barb is two times the gap between adjacent cell middle beam intersections. The length of a leg is less than the width of the middle beam subtracted from the basic height of the cell and then divided by two. In a three-dimensional cell, the depth of the middle beam is less than the distance from the outside of the leg to the middle beam intersection. Further the depth of the barb is also constrained by the elasticity of the material and the length of the leg in one embodiment. As a cell is coupled to another, the legs will bend slightly to overcome the depth of the barb until the barb reaches the recess. 
         [0025]    In an alternate embodiment the barbs are removed from one end and recesses are removed from the other end resulting in a cell that is polarized. The cell would have a positive and negative side, and as long as the cells were organized with the correct polarization would form a lattice. In yet another alternate embodiment the cells may be connected without barbs or recesses using rivets, pins and/or screws. 
         [0026]      FIG. 2  is a top view showing the basic connection of three cells in a two-dimensional arrangement. As shown two-dimensional cells are connected together to form an array. The cells in two dimensions are designed such that if the two-dimensional array is subject to bending forces then the bending is distributed among all cell structures. Further damage or a crack to one cell will not propagate to others. 
         [0027]      FIGS. 3A-3D  show multiple connection methods of cells in a two-dimensional arrangement.  FIG. 3A  shows a cell with bidirectional barbs  50 , also shown in  FIG. 1 . The barbs shown are symmetrical.  FIG. 3B  shows a cell with polarized barbs. One side as protruding barbs  52 , wherein the other side has a matching indent  54 . The cells in this arrangement connect in one direction.  FIG. 3C  shows a cell with a polarized and removable connection  56 . If the cell is connected horizontally and in this configuration the cell would have a spring constant dependent on the shape and depth of the protrusions and indents.  FIG. 3D  shows cells preferably connected by a fastener  58 , such as screw, rivet, or push pin through a hole. 
         [0028]      FIGS. 4A-4E  show multiple embodiments of cell end pieces. In one embodiment cells may be modified to be end pieces. As a result a block of cells will preferably have a smoother surface. 
         [0029]      FIGS. 5A-5B  show cells connected vertically and horizontally in one embodiment.  FIG. 5A  shows cells connected vertically. When connected vertically compression and tension forces are evenly distributed. In this case there is a low shear stress put on the vertical cell leg connections.  FIG. 5B  shows cells connected horizontally. In this case more shear stress is put on the cell leg connections; however, there are many advantages to this arrangement. 
         [0030]      FIGS. 6A-6B  show cells connected vertically and horizontally with end pieces attached in one embodiment.  FIG. 6A  shows cells connected vertically with end pieces attached to provide a generally smooth surface.  FIG. 6B  shows cells connected horizontally with end pieces attached to provide a generally smooth surface. 
         [0031]      FIG. 7  shows a sample of the force applied to a series of connected cells. In one embodiment compression and tension forces are distributed evenly when force is applied. 
         [0032]      FIGS. 8A-8C  shows the middle beam intersection of four three dimensional cells in a lattice. The gap between the middle beam intersections D is represented both along the X and the Z axis. The depth of the middle beam is represented by M.  FIG. 8C  shows a top view of four three dimensional cells, the legs are grey in this top view. 
         [0033]      FIGS. 9A-9C  show two cells in a three-dimensional arrangement. The three-dimensional cells consist of two two-dimensional cells connected together at ninety degrees in the center of the middle beam. In a preferred embodiment a large number of three-dimensional cells would form a lattice. The lattice when subjected to bending forces distributes the bending forces across all cells. In a small celled three-dimensional lattice, in one example, a nail is driven into the material, and while it may break a cell initially, the cell lattice will provide resistance in a distributed fashion on the nail. 
         [0034]      FIGS. 10A-10B  show example cell connections in three dimensions in one embodiment.  FIG. 10A  shows an example of cells connected vertically.  FIG. 10B  shows an example of cells connected horizontally. 
         [0035]      FIG. 11  shows a model 2×4 board with cells designed to present a flat surface. The 2×4 is made up of a lattice of three-dimensional cells.  FIG. 12  shows a close up view of the surface of  FIG. 11 . 
         [0036]      FIG. 13  shows an alternate embodiment using stamped metal sub-parts. The cell would consist of stamped metal parts. The parts are braze welded together to make a cell. The cells are polarized to attach to other cells. 
         [0037]      FIG. 14  is a two dimensional exemplary embodiment showing a fence made up of cells manufactured from stone. 
         [0038]    While the preferred embodiment of the invention has been illustrated and described, as noted above, many changes can be made without departing from the spirit and scope of the invention. Accordingly, the scope of the invention is not limited by the disclosure of the preferred embodiment.