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US 4,392,323 AGranted
Toy with turnable elements for forming geometric shapes
AssigneePolitoys Ipari Szovetkezet
InventorErno Rubik
Life of this patent
Estimating the term…
Abstract
A toy for constructing different geometric shapes has a plurality of hollow prismatic identical toy elements having a triangular base and quadratic faces. The elements are connected at two faces to adjoining elements by spring biased headed pins passing through aligned throughbores in the centers of the two faces to permit relative rotation about axis normal to the two faces. The elements are maintained in any one of a plurality of angular orientations by projections on one of the two faces of each element and depressions in the other face of each toy element.
Claims4
A toy for constructing different geometric shapes comprising:
- a plurality of identical toy elements each comprising an isoceles right triangular prism having two square side faces and a quadratic hypotenuse face;
- means connecting the elements in a row with side faces of each intermediate identical element abutting side faces of other identical elements for rotation of each element about the axis normal to each abutting side face and relative to the remaining elements;
- and means for positively maintaining each element in any one of four equally spaced discrete angular orientations relative to the adjacent elements.
Dependencies are inferred from the claim text.