Mortised Blocks Patents (Class 273/160)
  • Puzzle
    Patent number: 4148489
    Abstract: A three-dimensional geometric puzzle is provided and comprises six elongated members, each having a rectangular cross-sectional shape. The members are arranged in three pairs so that both members in each pair are in a side-by-side abutting relationship. In addition, each pair of members intersects the other two pairs perpendicularly and substantially at its midpoint thus forming a star-shaped configuration. The members can be assembled to and disassembled from the star-shape configuration in a predetermined order.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: April 10, 1979
    Inventor: Joseph F. Pidgeon
  • Geometrical constructions
    Patent number: 4121831
    Abstract: A construction in the shape of an octahedron assembles from a plurality of three dimensional U-shaped or V-shaped constructional elements or "pieces." Six identical U-shaped or V-shaped pieces form a single octahedron. Two V-shaped pieces may also form a smaller octahedron. The U-shaped and V-shaped pieces, each having trapezoidal surfaces, can also be used to assemble a variety of non-octahedral constructions. Preferably, the triangular faces of six-piece octahedral constructions are each composed of three trapezoidal surfaces.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: October 24, 1978
    Inventor: E. Colton Greene
  • Dual nature puzzle pieces
    Patent number: 4113256
    Abstract: Two three-dimensional shapes are described. The shapes may be used together both for the working of space-relational puzzles and for the working of many and various tile-like designs.
    Type: Grant
    Filed: May 31, 1977
    Date of Patent: September 12, 1978
    Inventor: David Roy Hutchings
  • Interengaging rings puzzle
    Patent number: 3970314
    Abstract: A plurality of rings of identical width and diameter, having a rectangular cross-section, include one solid ring and several split rings adapted to be assembled into a coplanar array. Each split ring is provided on each of its opposite faces with one or more generally radial grooves, each matingly engageable with a similar groove on one of the other rings, and also has a throughgoing slot accommodating the solid ring, the latter having a face formed with a groove for each of the remaining rings.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: July 20, 1976
    Assignee: Hermann Hansmann
    Inventors: Gert Michael Mayr, Wolfgang Schofl
  • Three dimensional interlocking puzzles
    Patent number: 3949994
    Abstract: A puzzle is described in the form of a three dimensional body, the exterior of which is preferably a cube and composed of eight elements, having their exterior surfaces forming the body, such as a cube, the constituent parts of which do not form the exterior appear to be readily separable, the elements being in pairs diagonally and slidably separable, the pairs when in extended positions permitting complete disassembly, assembly being achieved by a reversal of the disassembly.
    Type: Grant
    Filed: April 11, 1975
    Date of Patent: April 13, 1976
    Inventor: Raymond L. Knarr