Patent ID: 7625261

Claim:
A toy building set comprising toy building elements with coupling means for releasably interconnecting the toy building elements, the toy building set further comprising outer toy building elements ( 20 ) having a longitudinal direction and inner toy building elements ( 30 ) having a longitudinal direction, the inner toy building elements being receivable in the outer toy building elements with the longitudinal directions of the inner toy building elements parallel to the longitudinal directions of the outer toy building elements and the inner toy building elements slideable in the outer toy building elements along their parallel longitudinal directions, wherein the outer toy building elements can be interconnected in their longitudinal directions to form a composite outer toy building element, and the inner toy building elements can be interconnected in their longitudinal directions to form a composite inner toy building element comprising interconnections of the building elements, characterized in that the outer toy building elements ( 20 ), at opposite ends in their longitudinal direction, have flanges ( 22 ) extending transversely to the longitudinal direction, and the flanges have coupling means ( 23 ) for releasably interconnecting outer toy building elements ( 20 ).