Unit based building block ball run system

Abstract

A system of toy building block ball run components each having an integrally formed, recessed surface disposed in a portion thereof which defines a flat-bottomed or U-shaped passageway or ball run channel between sides of the block. Each component is made using a specific set of relationships in the dimensions of the building block and the ball run channels formed therein to allow broad combination of many components with one another and with other building blocks during creative play.

1 . A unit based building block ball run system component comprising a building block including an integrally formed ball channel with a flat-bottom or U-shaped cross section and the following dimensional relationships using a given unit of length:
 the depth of the ball channel is one unit,   the width of the ball channel is two units and is centered relative to the width of the building block,   the height of the building block is two units,   the width of the building block is four units,   the length of the building block is any integer multiple of units, and   which when stacked properly, two such components together create a tube whose opening has an approximately square cross-section with sides two units in length.