Patent ID: 8898989

Claim:
A set of building blocks useful for constructing toys or structures comprised of: a first block, which is a cube; and on each face of said cube a square with the sides of the said square equidistant from the edges of each face; and square serving as the base of a pyramid shaped void projecting into each face of said cube; and, a second block, which is an elongated cube that has a width and height equal to said first block's and a length that is twice as long; each end face has a square on it, the sides of which are the same distance from the edges of said face as on said first block; said square serving as the base of a pyramid shaped void which is the same as that on said part; and further each longer face of this second block has a rectangle on it whose sides are the same distance from the edges of the face as the sides of said square's to the edges of the face on the square ends, said rectangles serving as the base of an elongated pyramid shaped void with base angles the same as those on the pyramid shaped voids on said end faces; and further a third part, a block insert having an octahedral shape defined by the shape of the void between one first block stacked on another first block with edges in alignment; and further; when one cube shaped block is on top of another with a block insert in between, said cubes will be aligned on their six external faces; and further a first group of three of said second blocks are laid end to end on a level surface; and at one end of this first group, a second group of three of said second blocks are laid end to end in a direction that is perpendicular to the first group to form the first level of an L-shaped wall; and twelve inserts are positioned in the voids on the tops of the blocks of this first level; and a second L-shaped level with two cube shaped blocks and five second blocks are positioned on top of the first level, forming and L-shaped wall that is two levels high; where gravity holds the blocks together in an assembly and in alignment with the planes perpendicular and, horizontal to earth and should they part a distance, which is less than the height of the block insert projecting from the block beneath, due to an external force, the assembly is adapted to return to the original position.