| 主权项 |
1. A concrete block system for building a wall, the concrete block system comprising a standard block, a bond beam block, a right out corner block, a left out corner block, a right flush corner block, a left flush corner block, a right half flush block, a left half flush block, a left in corner block, and a right in corner block;
wherein each of the blocks having a substantially trapezoidal shape, being wider at bottom than at top, having a front shell and a rear shell, the rear shell being planar having a top edge, a bottom edge, a right edge, a left edge and a uniform width from the top to the bottom, the front shell being trapezoidal in shape having a top edge, a bottom edge, a right edge, a left edge, and being wider near the bottom than near the top; wherein each of the blocks further having a left shell end and a right shell end which transversely connect the front and rear shells near their right and left edges, the end shells having top and bottom edges; wherein the rear shell has its top edge lower than the top of the end shells to receive the bottom of the rear shell of a block stacked above and has its bottom edge extending downwardly beyond the bottom of the end shells to fit over the rear top corner of a block stacked beneath; wherein the front shell has its top edge leveled with the top of the end shells and its bottom edge extending downwardly beyond the bottom of the end shells and has a cutout near the bottom to fit over the front top corner of the block stacked beneath and has its top edge leveled with the top of the end shells to engage the cutoff of the block stacked above; wherein each of the blocks further having edges of both of the front and rear shells protruding out of an end shell creating protrusions to engage receiving corners of another block and having the edges of both of the front and rear shells caved in creating receiving corners from the other end shell to accommodate protrusions of another block. |
