Abstract: Six physically interchangeable pieces, each corresponding to a pair of adjacent cube edges, have surfaces that allow them to be assembled into subassemblies which, in turn, slide together to create a substantially symmetrical shape. Three fundamentally distinct arrangements of the pieces are possible, each having many possible sequences of assembly. In the final assemblies, the pieces are held together by mutually generated friction, but subassemblies of pieces slide along any of three orthogonal axes. Many external shapes are possible. Varied surface treatments, creating recognizable patterns on the final assemblies, add another significantly higher level of difficulty in these puzzles. One embodiment has holes that make it useful as an organizer on a desk.

Abstract: A puzzle is provided and consists of a pair of open end horseshoes, a pair of chains connected between the open end horseshoes and a closed end horseshoe placed around the pair of chains. The closed end horseshoe may be removed from the pair of chains thus solving the puzzle. Each chain has sleeves connected to end links thereof. The sleeves are slidably engaged over the respective ends of the open end horseshoes so that the chains can be removed and replaced as needed.

Abstract: Three Dimensional Combination Assembly is a game in which the player has to disassemble parts and reassemble them back to the starting position. The parts are interchangeable and therefore many false assembly combinations are available, hence, the objective is to reassemble the game back to the starting position.

Abstract: A cube puzzle is provided utilizing a group of 27 smaller cubes which are adapted to be assembled into a larger cube having a 3 by 3 by 3 configuration. The 27 cubes have at least first and second different sets of identifying indicia on each face thereof. The first set of identifying indicia include up to nine different numbers, some of which may be duplicated on different faces of any one cube and which are also oriented differently on different faces. A preferred embodiment of the assembled cube utilizes the numbers one to nine for the first set of indicia. The second set of identifying indicia include up to six different colors which also may be duplicated on different faces of the same cube. The cube puzzle also includes a transparent case having at least one removable face which may be used not only to package the puzzle but also for its assembly.

Abstract: An educational and recreational toy particularly for young children is provided for associating common subjects or shapes with related fragrances. The toy includes a series of uniquely shaped game pieces bearing familiar pictorial subject matter for seated reception within complementary-shaped recesses in a game board. Removal of a game piece from its associated board recess exposes a fragrance sticker adhered to the board and having a chemically coated front surface which, when lightly scratched, emits a familiar fragrance correlated with the shape and/or pictorial subject matter of the removed piece.

Abstract: A board game wherein the playing board has color-coded sides and color chips having each side color-coded are placed by opposing players on the playing board adjacent to other color chips and the color-coded sides of the board so that the colors of each adjacent chip match one another and so that the color of each chip which is adjacent to a color-coded side of the board also matches the color-coded side.

Abstract: A puzzle toy is provided comprising a plurality of pieces which can be easily gripped and manipulated by a young child and which can be assembled and disassembled into various structural combinations. The puzzle comprises pieces of various sizes having an aperture therein for fitting around a post upstanding from the base. The pieces are so designed so as to allow them to be placed randomly on the post and by manipulating and jogging the pieces, the puzzle solver may order the pieces in size order about the post.

Abstract: A number of square pieces having matching corner patterns and are arranged in sets so that each set may be assembled with the preceding sets to form a square in which the patterns on all mutually adjacent sides of the pieces match.

Abstract: A manipulative disk puzzle comprised of three identically shaped pieces which interfit to form a geometric solid which appears to have the form of a plurality of stacked disks. Each piece has a plurality of disk tri-sections which are integrally fastened to one another and offset from each other approximately 60 degrees. The pieces are also provided with a plurality of holes in which manipulative pegs are inserted having a depth equal to two layers. Thus, when the pegs are between two separable surfaces the interfitted pieces are locked together.

Abstract: A plural-loop Mobius strip loop puzzle having multiple twist component loops which are linked with each other and which have mating continuous edges with associated edge fasteners to permit assembling and disassembling a single composite Mobius strip loop.

Abstract: A sheet interfitting section puzzle includes incongruent pieces with complementary indicia which are physically separated by the puzzle piece internal edges and complementally abuttable internal edges which may be arranged in only one combination with all internal edges in complementary abutting relationship. When so arranged the complementary indicia are adjacent. Internal edges may be identical and therefore pieces may fit in an incorrect location while the puzzle is being constructed, in which location indicia adjacent to complementally abutting sides would not be complementary, but all the pieces must be located in their correct locations for the puzzle to be solved.

Abstract: A manipulation puzzle consisting of rigid or semi-rigid components is disclosed. The puzzle is solved by manipulating the components through a specific sequence of movements, in predetermined order, in accordance with a code employed in the construction of the puzzle. Various interacting components are interchangeable, thereby providing for the construction of "families" of puzzles. The puzzle comprises a plurality of ring members disposed to form a cylinder about a plurality of longitudinal slide members forming an interior cylinder on a common axis with the ring members. The solution is programmed into the elements by a series of pegs on one set of members, and a cooperative set of grooves on the other set of members.

Abstract: A puzzle includes a plurality of elongated blocks (22-37) of square cross section. Each block has a first end (22a-37a) rabbeted along one of the diagonals of the square cross section to form two turning treads separated by a riser and a second end (22b-37b) opposite the first end rabbeted to form two straight treads separated by a riser. A base container (38) having a bottom (40) and walls (42) extending therefrom receives the blocks therein with either the first or second end of each block engaging the bottom of the base container. The opposite end of each block is positioned upwardly to form a desired configuration of the blocks extending from the base container.

Abstract: An educational toy comprising an open top rectangular box having a plurality of like bottom sockets in a spaced apart relationship in its bottom and a truncated corner post at each interior corner, a plurality of rectilinear platform blocks of different heights each of which is provided with a mounting post that extends from and perpendicular to the bottom thereof and which post is adapted to be removably inserted into any bottom socket, a color board adapted to be removably placed in the top of the box and to sit on the truncated corner posts and having a plurality of distinctively colored figures equal in number to the number of bottom sockets painted or otherwise provided on one surface thereof in a spaced apart relationship, and a grate adapted to be removably placed in the top of the box and to sit on the truncated corner posts and having a plurality of spaced apart openings therein equal in number to the number of bottom sockets and adapted to receive a plurality of game blocks slidably inserted lengthw

Abstract: A number problem game which comprises a playing board having a planar surface thereon, with an odd number of squares arranged in an equal number of horizontal and vertical rows intersecting each other on the playing board, as well as a plurality of playing elements with each element having a different numbered indicia thereon. The elements being arrangeable on the squares of the board to satisfy a predetermined value which is satisfied by the arithmetical equation: ##EQU1## such that when the plurality of elements are properly positioned on the squares, the sum of the numbered indicia on the elements on each of the horizontal and vertical rows is equal to X, and a plurality of borders on the playing board in surrounding relationship to respective groups of odd numbers of the squares are provided. Each one of the borders having indicium thereon equivalent to one of the predetermined values of X.

Abstract: An educational cube puzzle game comprising sixteen cubes, eight of one color combination and eight of a second color combination. The first set of cubes has a first arrangement of colors having six different colors, one on each face. The second set of eight cubes also has a different color on each face and also contains the same six colors but the arrangement of the colors is different from the first set of cubes.

Abstract: A puzzle for teaching coagulation theory including three separable units representing the intrinsic, extrinsic and common coagulation pathways. Each of said units further including separable members representing the coagulation factors, said members, when assembled correctly, representing the order in which the factors interact.

Abstract: What is disclosed is a novel game which depends on both memory and skill. The game consists of a spinner apparatus for determining play and a series of perforated, patterned discs and colored pegs which gives both a chance selection and chance peg insertion which gives the game ever-changing characteristics.

Abstract: A number problem game which comprises a playing board having a planar surface thereon, with an odd number of squares arranged in an equal number of horizontal and vertical rows intersecting each other on the playing board, as well as a plurality of playing elements with each element having a different numbered indicia thereon. The elements being arrangeable on the squares of the board to satisfy a predetermined value which is satisfied by the arithmetical equation:[.sqroot.n (a + N)[/2 = Xsuch that when the plurality of elements are properly positioned on the squares, the sum of the numbered indicia on the elements on each of the horizontal and vertical rows is equal to X, and a plurality of borders on the playing board in surrounding relationship to respective groups of odd numbers of the squares are provided. Each one of the borders having indicium thereon equivalent to one of the predetermined values of X.

Abstract: A set of tiles for covering a surface is composed of two types of tile. Each type is basically quadrilateral in shape and the respective shapes are such that if a multiplicity of tiles are juxtaposed in a matching configuration, which may be prescribed by matching markings or shapings, the pattern which they form is necessarily non-repetitive, giving a considerable esthetic appeal to the eye. The tiles of the invention may be used to form an instructive game or as a visually attractive floor or wall covering or the like.

Abstract: A magic square puzzle including a main piece which is square in plan view and four auxiliary rectangular pieces each having a square cross section. The top surface of the main piece is divided into four equal square shaped quadrante each provided with a numerical indicium. Three longitudinal surfaces of each rectangular piece is divided into three square shaped segments each having a numerical indicium therein. The object of the puzzle is to arrange the rectangular pieces around the periphery of the main piece in a effort to achieve a magic square solution.

Abstract: An alarm plug tube of electrically insulative material in a box has electrical contacts in spaced relation. An alarm circuit in the box is electrically connected to the electrical contacts for indicating when the electrical contacts are in electrical connection. The alarm circuit has a battery, lamps and an audible alarm connected to the electrical contacts. An alarm plug of electrically insulative material has raised electrically conductive contact plates extending from the surface thereof in spaced random relation whereby a player attempts to withdraw the alarm plug from the alarm plug tube without electrically connecting the electrical contacts of the alarm plug tube via the contact plates of the alarm plug. A timer and a switch in the box are electrically connected in circuit with the audible alarm and the battery for determining a period of time during which a player attempts to remove the alarm plug from the alarm plug tube. The switch neutralizes the timer and the audible alarm when opened.

Abstract: An educational and entertaining device comprising a set of geometrically identical or proportional elements, each of which includes a plurality of coded indicia bearing surface portions with at least one numeral on each surface portion, the number of elements in said set and the number of said surface portions being identical and at least four in number, said numerals being so related to said coding indicia that if the elements are arrayed such that a differently coded surface portion of each of the elements is disposed for viewing, regardless of which coded surface portion of which element is so disposed, the sum of the numerals on the so disposed surface portions is a constant.

Abstract: An instructional balancing toy set for use, for instance, by preschool children to amuse and entertain the children while at the same time conveying concepts of object size and object weight. The device includes a base and a plurality of vertically stackable balancing members. The base is upwardly converging and frusto-conical in shape and rests on a support surface, and has a circular top lip which receives a generally spherical intermediate second balancing member to hold the spherical member in a predetermined upright proper orientation. The spherical member when properly oriented, includes an upwardly projecting lug at the top thereof which is received in a lug receiver on the bottom of a figurine to support the figurine in upright position on top of the spherical member as a third member of the assembly. The figurine member includes a generally concave depression on the top surface thereof.

Abstract: A toy or game is provided which comprises a block which may have cubical or other shape, and which is provided with a multiplicity of tapped holes therein of different diameters. A plurality of split bolts are also provided of different colors, sizes and head shapes, and the object of the game is to fit the proper halves together for each such bolt, to select the proper hole in the block into which the bolt may be fitted, and to screw each of the bolts into the proper hole.

Abstract: A three-dimensional word game apparatus which includes a cubical solid defining six playing surfaces. Paper pieces or covers having game diagrams and indicia formed thereon are adapted to be positioned upon and to cover the six faces of the cubical solid. The paper pieces or covers may take any of a variety of different shapes and embodiments. One such preferred embodiment has three each of the playing surfaces or areas formed on two substantially rectangular pieces of paper. The three playing surfaces are arranged in an end-to-end fashion, and each piece of paper includes tabs and marking indicia for facilitating attachment of the pieces of paper to one another and to the cubical solid. This embodiment of paper cover facilitates provision of same in a pad-like form. The individual pieces of paper may be mounted to the cubical solid with the aid of an adhesive or retainer clips, and have playing areas and squares adapted to be written or otherwise marked in by the game players.

Abstract: A puzzle comprising a game board and pieces in which the side surfaces of a regular polyhedron are depicted in spaced relationship on the game board, the vertexes adjoining at a corner of the polyhedron being identified by non-crossing lines from said vertexes to a common point, and in which the pieces are congruent with the depicted side surfaces and have at each vertex an indicium selected from as many different indicia as there are adjoining vertexes at a corner of the polyhedron, said vertex marking being permuted in such a way that none of the pieces are identical. The number of said pieces correspond to the number of side surfaces of the polyhedron in question, and in solving the puzzle the pieces are to be placed covering the depicted polygons of the board, so that none of the markings of the vertexes adjoining at any of said center points are identical.

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.

Abstract: A three-dimensional word game comprising a 3.times.3.times.3 cube for receiving letter pieces, there being 26 letter-receiving spaces disposed on the surface of the cube. One letter of the alphabet may be associated with each of 26 letter pieces. In playing the game, players take turns placing one or more letter pieces onto the cube. Words are spelled out by tracing a path between consecutively adjacent letter pieces.