主权项 |
1. A stackable block comprising:
a body having six sides including parallel opposing front and back sides, parallel opposing left and right sides, and parallel opposing top and bottom sides; first and second projections projecting from one of said sides, said first and second projections each having a face and four sidewalls so that said first and second projections have a square cross-section, each of said first and second projections' faces include an edge which extends uniformly beyond all four of the projections' four sidewalls to form a recess between each of said projections' edge and said adjacent block side so that recess is formed into all four sidewalls; first and second slots each having a length and a width and wherein said first and second slots are formed into one of said body's front, back, left or right sides, each said first and second slots' lengths extending the entirety of said body's side to form parallel first and second cavities that extend from one side of said body to an opposing side of said body, each of said first and second slots also including opposed flanges that extend over their respective cavity with the distance between a slot's flanges defining said slot's width, said first and second slots being rectangular wherein said each of said slot's length is greater than said slot's width; a third slot having a length and a width and wherein said slot is formed into said bottom side which is adjacent to said side with said first and second parallel slots, said third slot's length extending the entirety of said body's bottom side to form a third cavity that extends from one side of said body to an opposing side of said body, said third slot also including opposed flanges that extend over said third cavity with the distance between said flanges defines said third slot's width, said third slot being rectangular wherein said slot's third length is greater than said third slot's width; and said first, second and third slots' widths sized to receive either said first or second projection of other like stackable blocks in two different press-fit attachment positions wherein said first and second projections and said slots are sized and configured so that either said first or second projections can affix to a slot of other like stackable blocks in a first attachment position and so that either said first or second projections can affix to a slot of other like stackable blocks in a second attachment position wherein said first or second projections are rotated 90° as compared to the first position. |