Block unit for making three-dimensional blocks composed of geometric points, lines and planes

Claim 1

A construction set for making three dimensional structures of the type having geometric points or vertexes and lines composed of circular disk means serving as the geometric points or vertexes and ladder-shaped link means serving as the lines, the improvement comprises: at least one circular disk means comprising a central disk portion having two sides and a female socked formed on one side and at a center thereof, a male screw extending from the other side and at the center thereof and is secured to said central disk portion by a neck portion, said screw is adapted to be removably engageable with the female socket of another identical circular disk means, an inner ring extending on said two sides of said central disk portion and being concentric to the center thereof, a middle ring extending on said two sides of said central disk portion and being concentric to and equally spaced from said inner ring, and an outer ring concentric to and equally spaced from said middle ring by an annular slot through opening and is secured to said middle ring by a pair of radial connectors across said opening; and at least one ladder-shaped link means comprising a pair of spaced parallel longitudinal bars transversely connected by a central bar perpendicular to said longitudinal bars, a pair of side bars transversely connected to said longitudinal bars and being equally spaced one on each side of said central bar forming respective intermediate windows defined by said longitudinal bars, said central bar and said side bars, a pair of side clamps disposed one on each opposite end of said link means, each of said clamps having a slit open at one end thereof, and an outer notch, a middle notch and an inner notch sequentially formed along said slit, said slit adapted to be removably engageable with said outer ring, middle ring, inner ring, neck portion, and radial connector of said circular disk means, and adapted to be removably engageable with a central bar, a side bar, and a longitudinal bar of another identical ladder-shaped link means, and said outer notch adapted to be removably engageable with said outer ring for a pivotal and a sliding movement along said outer ring of said circular disk means.