Abstract: A container (1), such as a yoghurt or cream pot, is of tube-like form with a side wall of circular cross-section tapering towards the base (2) from an open mouth (3). The base and mouth comprise opposite ends of the container. A flange plate (4) surrounds the open mouth (3) and is provided with sockets in the form through holes (5) punched through each of the four corners. The base (2) of the container has a central cruciform projection (6) and in the angles between each pair of arms of the cruciform a projecting plug or stud (7) is formed. The holes (5) and studs (7) comprise mutually interchangeable connection parts. A plurality of like containers (1) can, when empty, be assembled in a desired spatial relationship by interengaging a stud (7) in a hole (5). The building system so formed thus forms a knock-down constructional toy.

Abstract: This animal containment structure is so designed, as to be easily put together by a multiple number of cubical connectors and plugs, and panels are so designed for being readily received in rail members that receive the cubical connectors and plugs.

Abstract: A toy construction kit has an angled profiled member with two arms arranged at a an angle relative to one another and each provided with a plurality of apertures for engaging with the locking pegs of adjoining components, a substantially block-shaped adapter arranged inside the angled profiled member between the arms and fixable to the angled profiled member, the adapter having free external sides provided with connecting elements for connecting further components thereto, and elements for fixing the adapter to the angled profiled member and including a locking peg engages through a respective one of the apertures of the angled profiled member.

Abstract: A building pad of rectangular construction having a pair of pockets extending through the longitudinal sides thereof. The ends are closed and an identical pad is attached thereto having a pair of pockets extending through the sides thereof. Tabs are insertable in any of the pockets for attaching a similar pad edge-to-edge or side-to-side thereto. Photographs are insertable in the outermost pockets.

Abstract: A landscape timber building module is constructed preferably from a solid piece of wood with a predetermined length and width. At least two flat opposed, substantially parallel surfaces, have a plurality of uniformly spaced holes extending therethrough. Each end of the module is curved with a radius extending from approximately the centerline of the second hole inwardly from the end. The individual modules are then used, preferably after being treated with a preservative compound, as building elements to form composite landscaping structures. Individual modules are interconnected by the use of pin connectors inserted through aligned holes in the modules.

Abstract: A constructive assembly is provided comprising separate assembly parts with side-projections and corresponding side-recesses. Moreover the assembly parts comprise cooperating recesses at their top for accommodating coupling elements for holding together assembled assembly parts.

Abstract: A pivot structure comprises a one-piece plastic support including a parallelepiped rectangular body having a sidewall and a pivot bracket projecting from this sidewall. It comprises also a one-piece plastic bar section which includes a base plate, a columnar connector having an essentially constant cross-section and projecting from one face of the base plate; an L-shaped connector with a first leg upstanding at one end from one edge of the base plate, spacedly of the columnar connector, and a second leg projecting outwardly from the other end of the first leg, away from the columnar connector. The support section and the bar section are interconnected by a pivot arrangement on both the bracket of the support section and on the free end of the second leg of the L-shaped connector to allow for relative pivotal movement of the support section and bar section about an axis which is parallel to the sidewall of the support section.

Abstract: A generally rectangular building element has projections on the top surface and matching recesses on the bottom surface. Apertures are provided in the projections so that coupling pins can be used to lock together building elements that are assembled together.

Abstract: A toy building block includes a rectangular parallelpipedic body with a pair of dovetail-shaped slots extending transversely across the center of four adjacent sides thereof, and a lug extending outwardly from the center of the slots on two of the sides, the portion of the lug projecting outwardly beyond the plane of the side of the block also having a dovetail cross section for sliding engagement with the slots, and the central portion of each lug being bifurcated, the sides of the central portion flexing inwardly to permit insertion of the lug into a slot and bearing against the sides of the slot to releasably lock the lug in the slot.

Abstract: A tubular structural system utilizes a plurality of graduated tubes, each having a plurality of apertures formed therein for receiving smaller tubes in a selectively locking configuration such that the tubes may be interlocked to form a structural framework.

Abstract: Elastomeric foam blocks are provided for constructing toys and models with a means of attachment of one block to another block in the form of flexible protuberances and cellular receptacles present on all surfaces, so that when one or more blocks are engaged, a clinging force is generated. Furthermore, either independently of, or in collaboration with the above, another means of connecting said blocks is provided by inserting simple pins into the matrix of said foam in any direction and without preformed perforations. The pins are held in place in the perforations created by the insertion of the pins into the foam by the elastomeric forces inherent in the polymeric structure of the foam, and the perforations snap shut upon the removal of the pins, thus allowing the building units to be reused again to construct more toys and models.

Abstract: A modular "full bleed" panel system with interchangeable interconnecting elements for creating display booths, room dividers and the like. The system comprises a series of modular panels of different shape, construction and function, together with a series of modular connector elements adapted to interconnect with each of said panels to form any of a variety of highly stable structures which present a visually unitary appearance and in which the connector elements are not significantly visible.

Abstract: A three-dimensional model of molecular structure comprises plastic modules and their connecting elements which are made as cylindrical rods whose entire surface, as well as the mating surface of sockets of the modules, is provided with easily curved projections alternating with depressions of the same shape. To assemble or disassemble said three-dimensional model use is made of a device, whose jaws each have a wider portion to hold the module and are bent, and the inner surface of the jaws being provided with wedge-like projections to facilitate disassembly of the modules.

Abstract: The toy building block kit includes a variety of buildingblock pieces with a first building block piece (e.g., piece 10, 100, 110, etc.) having on at least one side thereof, a longitudinal slot (20, 102, 112, etc.) and a transverse slot (30, 104, 114, etc.), and a second building block piece (e.g., piece 12, 140, 150, etc.) having on at least one side thereof a rib (60, 130, 142, 152, etc.) extending therefrom sized, configured and dimensioned to be received in one of the slots (20, 102, 112 etc. or 30, 104, 114, etc.) in said first piece.The pieces can be elongate, rectangular or triangular and each piece has crossing slots (e.g., slots 20, 30) therein forming a waffle or matrix pattern on the various sides thereof.Also each piece, (e.g., piece 10) may have one or more ribs (e.g., ribs 60) extending from a side thereof for interconnecting with another piece (e.g., piece 12).Furthermore, a variety of specialty pieces, e.g.

Abstract: The disclosure relates to a construction panel system for the erection of doll and play houses, mazes, etc., and comprises a series of connected rectangular panels of approximately the same size connected together so that each panel can be rotated with respect to an adjacent panel but at least two of said panels are connected to adjacent panels by double hinges of the Jacobs ladder type so that they can be rotated in two directions with respect to adjacent panels and at least one additional panel is connected to the Jacobs ladder type so that it can be rotated in two directions with respect to said adjacent panel and at least one additional panel as connected to the Jacobs ladder panels by a hinge having its axis at right angles to the Jacobs ladder hinge. The panels are provided with holes adjacent the corners thereof and a fastening and reinforcing means is provided for holding non-connected panels together.

Abstract: A construction kit consisting of rigid or telescoping elongate strut members which may be attached together by flexible tendons to form a variety of designs and model structures. The invention places no limits on the number of struts which can be attached at one vertex or their relative angles, and the length of each strut may be varied within broad limits. Furthermore, the end of one strut may be attached not only to the end of another, but to any point along its length. Accordingly, an almost unlimited variety of constructions is possible.

Abstract: A toy building block is disclosed which is in the approximate shape of an "A" formed by two legs fixed to an apex portion which includes a square socket opening. Building blocks of this shape are joinable by an axle inserted into the apex opening the axle having either a square or circular cross section, all of the dimensions of the building blocks and axle being based on a basic unit of length a.

Abstract: In articles formed from at least two boards in each of two planes and joined by plugs fitted into spaced holes formed in the faces of the boards in one plane and aligned holes in the ends of the boards of the other plane, the boards in each plane are of different width and arranged so that the adjacent edges of the boards in one plane are covered by a board in the other plane. The narrower boards are provided with at least two holes and the wider boards with at least three holes across their width, the spacing of all the holes being equal.

Abstract: A hollow ball-like construction is disclosed as including a plurality of hollow wedges having a variety of different shapes and angles, which wedges are mounted on a central disc to form a unitary assembly. Cylindrical and spherical wedges of different configurations are utilized to complete the constructions into a plurality of outlines, such as a trapezoid, a rhombus, a square, a triangle, a pentagon, a hexagon and other irregular outlines.

Abstract: The toy construction set includes a plurality of blocks and at least one base plate. Each of the blocks has one or more axially shiftable and rotatable coupling cams mounted therein which can be projected from the bottom of the block to effect vertical attachment with another block or with the base plate, using a suitable hand tool to do so. The preferred base plate contains a number of appropriately located coupling cams so that it can be attached either above or below a number of blocks.

Abstract: The problem of providing a greater tolerance in the hole diameters of toy blocks held together by frictionally fitting resiliently deformable connector elements is resolved by connector structural features. Thus, the connector element has a hollow cylindrical body of resiliently deformable plastic with separate slots extending axially along the cylindrical circumferential walls on diametrically opposite sides of the cylindrical body and at opposite ends. This provides independent conformation to mating block holes for each end so that entry of one end into a smaller hole will not deform the connector to decrease friction at the opposite end, and thus a tight fit will result in a larger hole.

Abstract: A constructional toy kit consisting of an L-shaped block and a U-shaped block, both provided with series of bores located and extending in directions as specified in the disclosure. The kit further includes pins, strips, bevelled blocks assembling blocks, discs and washers to enable the assembly of many different models.