US Patent 10159905 Construction toy set of connectable and positionable elements

A construction toy set with multiple construction elements, the construction elements having a generally wafer shaped element body with one or more internal receiver passages extending through the element body, the receiver passages having one or more receiver tracks extending laterally across the receiver passage, the element body having one or more element keys protruding laterally from the element body, element key dimensioning providing for insertion of an element key of a first construction element in a receiver track of a second construction element and for slidable mating of the element key of the first construction element with the receiver track of the second construction element.