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US 6,217,023 B1Granted
Spatial logic puzzle
AssigneeSeven Towns Limited
InventorThomas Kremer
Life of this patent
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AssigneeSeven Towns Limited
InventorThomas Kremer
Estimating the term…
A spatial logic or manipulative puzzle in the form of a 2×2×2 cube is provided comprising a body made of interconnected pieces, groups of which are relatively rotatable about three axes to exchange positions of the pieces, wherein exposed faces of the pieces are sculptured to define an image. Each piece has means for establishing a pivotal connection to other pieces of the puzzle, at least three planar faces for slideable abutment with adjoining faces of other pieces, and at least one exposed face which is sculptured to define part of an image. The internal mechanism is preferably controlled by a castellated spider fixed in relationship to one of the pieces. A mechanism of this type enables the pieces and components to be interengaged and secured together by pushing the last piece home and does not require internal screws or springs or gluing as in some other known cube mechanisms.
A manipulative puzzle comprising a body made of mechanically interconnected pieces in a 2×2×2 cube arrangement, groups of which are relatively rotatable about three axes to exchange positions of the pieces, wherein at least the height and width of the puzzle differ, and wherein the pieces have abutting planar faces which slide past one another, each of said pieces having three such planar faces arranged in a mutually orthogonal relationship and have exposed faces which are sculptured to define an image, said planar faces and exposed faces defining a closed, hollow body for said pieces, wherein each piece is of molded thermoplastics material whose thickness is small compared to the dimensions of said piece and wherein each piece comprises a first portion which provides the exposed face and two of the three planar faces, and a second portion attached to the first portion which provides the third planar face.
Dependencies are inferred from the claim text.