Patent ID: 6162108
Filing Date: 2000-12-19
Classification: A63H

Abstract:
A stacking block system comprising:a plurality of blocks, each of said blocks having a top face and a plurality of side walls extending downwardly therefrom, said blocks including a single-knobbed block having a single coupling knob extending upwardly from said top face, said blocks including a multiple-knobbed block having a plurality of coupling knobs extending upwardly from said top face; each coupling knob having a upper part substantially spherical in shape and a lower part substantially cylindrical in shape; and said single-knobbed blocks each having at least one complementary tubular coupling means for coupling with a coupling knob on another block, said at least one complementary tubular coupling means extending downwardly from said top face and extending beyond said side walls;and wherein said coupling knobs and said blocks are dimensioned and arranged such that when a single-knobbed block is coupled with a coupling knob on a multiple-knobbed block said single-knobbed block is free to rotate fully about an axis through said coupling knob;and wherein said coupling knobs are arranged in a uniform pattern on multiple-knobbed blocks.