Abstract: A front rail is formed by bending a steel sheet. The front rail has a front part having a hole, the hole allowing insertion of a dowel pin arranged on a printed circuit board, a top part mounting a guide rail for guiding the printed circuit board thereon, a rear part extending from the top part via a hem formed by folding back the steel sheet, for supporting a lower portion of the top part, and a bottom part extending from the rear part.

Abstract: A telescoping cable trough section is provided including first and second U-shaped trough sections which are slideably received with each other. One trough section includes slots, and the other includes flanges received in the slots for mating the two trough sections together to form the telescoping cable trough section.

Abstract: A telescoping cable trough section is provided including first and second U-shaped trough sections which are slideably received with each other. One trough section includes slots, and the other includes flanges received in the slots for mating the two trough sections together to form the telescoping cable trough section.

Abstract: Couplers for a cable trough system including a terminal end sized to receive a terminal end of a trough member along a longitudinal direction of the body. A spring may be coupled to the body for securing the terminal end of the trough member to the coupler, the spring including first and second spring arms extending generally in opposition to one another in a plane generally parallel to the longitudinal direction. The spring may be received in a slot formed by the trough member. Also included may be a spring release mechanism coupled to the body, the spring release mechanism sliding in the longitudinal direction between a locked position, such that the first and second spring arms engage the terminal end of the trough, and an unlocked position, such that the first and second fingers release the first and second arms of the spring.

Abstract: A profile-connecting device for connecting two profile bars. The first profile bar has an end side which abuts a longitudinal side of a second profile bar. At least the outer longitudinal side of the second profile bar which is directed toward the end side of the first profile bar and at least one outer longitudinal side of the first profile bar has an undercut groove.

Abstract: A stiffening rail support is provided for attaching a stiffening rail to an outer frame for a lower blanking tool of a carton die cutting machine to discourage the flexing thereof. The stiffening rail support includes a clamping piece defining a vertically extending inner face, an opposite vertically extending outer face, and a bore extending between the inner face and the outer face along an axis at an acute angle to the outer face. A jaw element is operatively connected to the clamp piece so as to define a clamp cavity therebetween. The jaw element is movable between a clamping position for retaining a portion of the stiffening rail in the clamp cavity and a release position.

Abstract: A cable duct coupler for coupling a first cable duct section to a second cable duct section without the need for tools, the cable duct coupler comprising a channel portion, a first outer guide element and a second outer guide element, a barb mount extending from at least one of the channel portion and the outer guide elements, and a barb having a body and first and second arms extending from the body, the barb being mounted on the barb mount, wherein at least a portion of the first arm extends at an angle between the first portion of the channel portion and the barb body and at least a portion of the second arm extends at an angle between the second portion of the channel portion and the barb body.

Abstract: A joining assembly for mounting a fastening element to an external surface of a structural member of deformable material. The structural member is provided at its external surface with one or a plurality of joining projections engaging into respective recesses of a joining flange of said fastening element. The joining projections are provided at their free ends with upset beads obtained by material deformation of the joining projections and positively fixing the associated joining projection to the joining flange.

Abstract: A cable duct coupler for coupling a first cable duct section to a second cable duct section without the need for tools, the cable duct coupler comprising a channel portion, a first outer guide element and a second outer guide element, a barb mount extending from at least one of the channel portion and the outer guide elements, and a barb having a body and first and second arms extending from the body, the barb being mounted on the barb mount, wherein at least a portion of the first arm extends at an angle between the first portion of the channel portion and the barb body and at least a portion of the second arm extends at an angle between the second portion of the channel portion and the barb body.

Abstract: A cable duct coupler for coupling a first cable duct section to a second cable duct section without the need for tools, the cable duct coupler comprising a channel portion, a first outer guide element and a second outer guide element, a barb mount extending from at least one of the channel portion and the outer guide elements, and a barb having a body and first and second arms extending from the body, the barb being mounted on the barb mount, wherein at least a portion of the first arm extends at an angle between the first portion of the channel portion and the barb body and at least a portion of the second arm extends at an angle between the second portion of the channel portion and the barb body.

Abstract: A primary connector useful for attaching a pre-cast element to a structure includes a receiver member and an attachment member. The receiver member includes a base plate and an acceptor disposed in substantially normal relation to the base plate. The attachment member is a separate plate having a front surface and a back surface with a plurality of anchors extending outwardly from the back surface and a plurality of keyhole slots formed through the plate with each of the slots be accessible from the plate's front surface so that the attachment member may be joined to the receiver member.

Abstract: A cable duct coupler includes an inner wall shaped to define a cable-receiving channel therebetween, a support rib extending from the inner wall and including at least one mount clip, an axially extending outer wall outwardly spaced from the inner wall to define a duct section receiving space therebetween, and at least one removable retention clip. The retention clip has arms that extend into the duct section receiving space, such that upon insertion of cable duct sections, such as a cable trough or fitting, into the duct section receiving space, the retention clip biases the duct sections against the inner wall to retain the duct sections together. The removable retention clip is movable between an insert position in which the arms extend into the duct section receiving space to allow coupling and a detach position in which the arms no longer extend into the duct section receiving space to allow disassembly of the discrete duct sections.

Abstract: There is disclosed a flooring panel which comprises a supporting plate made of wood material and provided on at least one face with a covering. The supporting plate is provided at its edges with tongues and grooves which fit into and onto corresponding grooves and tongues on further similar panels. Each edge of the supporting plate has both a groove and a tongue to provide a firm connection.

Abstract: A guide apparatus having a dustproof structure comprises: a linear guide device; an outer cover mounted to the linear guide device so as to cover the linear guide device and provided with an opening, the linear guide device including a movable member having a side lug portions projecting outward through the opening formed to the outer cover and the movable member being movable along the opening; and a sealing structure having a plurality of seal members each in shape of belt and having flexibility. The seal members are applied to edge portions of the opening of the outer cover so as to be overlapped to each other thereby to substantially keep a sealed state inside the linear guide device. The sealed seal members are separated and pushed aside by a guide structure formed to the movable member at a time of the advancing motion thereof with the sealed state inside the linear guide device being substantially maintained.

Abstract: The profiled beam 111 is provided with a circular inner tubular part and comprises eight long slots, three of which are covered with each a clamping profile 112, 113, 114. At the supporting side, a supporting element 115 and two flat bars 116, 117 are fixed, which are provided with slots for further clamping profiles. The edges of the clamping profiles serve for the supporting of plates. A supporting surface 118 is attached laterally to the supporting element 115. The supporting element 115, which is oriented parallel to the flat bar 116, can also be mounted at the place of or additionally to this flat bar in parallel orientation to the flat bar 117, which shows the versatile applicability of the profiled beam.

Abstract: A modular tent platform system for elevating a tent structure from a ground surface to enhance comfort within the tent structure and prevent saturation of the tent structure due to ground moisture, runoff, or precipitation includes substantially planar support panels, support braces, support legs for interlocking adjacent support panels, and attachment assemblies for securing a tent to the platform. In a preferred embodiment, the support legs and adjacent panels are coupled together using channeled connecting members.

Abstract: An inserted tongue adapted to slip into a T-shaped, undercut groove of a profiled bar has an essentially wedge-shaped cross section, the wedge apex line of which intersects the bottom center of the groove at a clamping point when the inserted tongue is in the groove. A threaded bore is provided in the inserted tongue perpendicular to the wedge apex line. In order that the inserted tongue can be manufactured more easily and cheaply, it is designed so that a portion of the wedge cross section is formed into a plastic spring clip, which extends longitudinally in the region of its wedge apex line, the free, spring-elastic end of which leg has a clamping point making contact with the floor of the contoured groove to stablize the inserted tongue within the groove of the profiled bar.

Abstract: Apparatus for coupling an elongate support and a fence, such as a partition between cubicles in a stall. Cubicle partitions are first hung from couplings which have been fixed to a horizontal member of an elongate support. The partitions are hung on the support one end at a time, allowing for a single person to perform this operation even with relatively heavy partitions. After hanging the ends of the partition, the partition can be adjusted prior to finally securing the ends of the partition to the support.

Abstract: A junction member (1), has an external form (2) that is polygonal in cross section and has external faces (4) of a polygon; adjacent corners (3) of the polygon defining respective external adjacent corners of each external face, each of those corners constituting a respective tunnel (5) so that each corner is a respective corner box section; and an internal form (6) that is polygonal in cross section and constitutes an internal box section, each corner box section intersecting a respective corner (7) of the internal box section. The external face has one slot (8) between respective external adjacent corners, the base of the slot being comprised by a respective face (9) of the internal form, said slot being a subtantially T-shape so that a suitable tenon may be inserted into the said slot, optionally thereby permanently or releasably to interlock with the junction member.

Abstract: In order to couple and fix a first chassis and a second chassis, the first chassis is positioned relative to the second chassis. Then, coupling members are inserted into pairs of first and second coupling grooves, respectively. The first chassis has the first coupling grooves provided in upper portions of the first chassis and extending from a front wall along side walls, respectively, and the second chassis having second coupling grooves provided in lower portions of the second chassis and extending from a front wall along side walls, respectively. Finally, the coupling members are fixed to both of the first chassis and the second chassis.

Abstract: A partition framework for dividing a space into small compartments is composed of a plurality of frame parts having an upright support, a plurality of connection heads, and at least one connect in column. The upright support is provided with a plurality of fastening holes and through holes. The connection heads have a base, a hollow projection and a stepped hollow projection. The connection column is provided with at least two slide slots extending along the direction of the longitudinal axis of the connection column.

Abstract: A robotic arm utilizing two pulleys connected by two metallic drive bands wound in opposite directions and rotatably attached to the pulleys. The metallic drive bands may include multiple metal strips separated by a visco-elastic material. One end of one drive band is attached to the pulley by a pin. A positioning mechanism is provided to adjust the tension of the band. The positioning mechanism includes a retaining piece, a wedge piece and an adjustment piece. The retaining piece is laterally movable and has an attachment point to the metal band and a slanted face. The wedge piece is vertically-movable and has a face abutting the slanted face of the retaining piece. The adjustment piece attaches the wedge piece to the pulley and moves the wedge piece vertically.

Abstract: A modular cable protection system which is intended to protect electrical cables, fluid hoses and data cables from externally caused physical or mechanical damage. The modular protective components may be detachably interlocked with other structural components so as to form a suitably sized cable protection system. The components may be constituted of molded plastic material of high rigidity and strength, and are adapted to be selectively joined to other components as required to provide the necessary protective array in a simply assembled and decorative manner which not only fulfills the desired protective tasks but which is also authentically pleasing in appearance.

Abstract: A method for assembling floor boards includes the steps of: (a) providing a supporting joist fixedly mounted on a floor; (b) providing a plurality of floor boards on the supporting joist; (c) providing a plurality of fastener members each mounted on the supporting joist for securing each of the floor boards on the supporting joist; and (d) combining each of the floor boards consecutively.

Abstract: A coupling for a cable routing system includes wall guides spaced apart by a thickness equal to a thickness of the walls of fiber troughs to be joined by the coupling. The wall guides carry a fastener system including a bracket disposed to oppose an external surface of a trough or fitting attached to the coupling. A fastener is carried on the bracket and is axially drivable to pierce and penetrate into the wall thickness of a coupled trough.

Abstract: An apparatus and method for rigidly joining construction elements to one another based on providing construction elements each having a connecting bore formed therethrough, positioning elements each having a connecting bore formed therethrough for aligning the connecting bores of adjacent construction elements, and partially expandable locking means dimensioned to extend through the aligned connecting bores of at least two construction elements and one positioning element. The construction elements and positioning elements are further equipped with engagement grooves and engagement ribs, respectively, for positioning adjacent construction elements in any number of predetermined angles. The locking mechanism has a radially expanding portion capable of locking the previously positioned construction elements in a rigid fashion.

Abstract: A robotic arm utilizing two pulleys connected by two metal drive bands wound in opposite directions and rotatably attached to the pulleys. The metal drive bands may include multiple metal strips separated by a visco-elastic material. One end of one drive band is attached to the pulley by a pin. The pin has a laterally movable retaining piece with a slanted face having an attachment point connected to one end of the metal band, a vertically movable wedge piece with a face abutting the slanted face, and an adjustment piece which attaches the wedge piece to the pulley and moves the wedge piece vertically.

Abstract: Support connections. Support connection are provided between two rolls, with the roll covering of at least one roll being journalled on a carrier via a plurality of support elements as well as being displaceable relative to the carrier along the pressure plane, with support portions that receive the carrier being connected via elongated connection parts, having thickened portions on both ends thereof, with the thickened portions being connected in a form-locking manner with respective recesses of the support parts in a removable manner, with the connection parts, between the thickened portions, in a direction parallel with the pressure plane, being substantially longer than laterally extending with respect thereto and, between the thickened portions, at least one elongated opening being provided therein, with the opening dividing the connection parts in the direction of the roll axis.

Abstract: The device for connecting bearing rings with ring-shaped grooves is machined into the peripheral surfaces. An essentially sleeve-shaped connecting element engages in these grooves, where flange-shaped retaining projections on the connecting element cooperate with conical clamping surfaces of the ring-shaped grooves, which are characterized by ring-shaped grooves formed in the ring-shaped undercut. These grooves have positive-locking surfaces oriented toward its interior and snap-lock elements are arranged in a ring on the retaining projections to grip behind the positive-locking surfaces.

Abstract: A connector assembly for joining two structural members arranged in longitudinal direction sequentially or side-by-side, includes at least one structural member which has a hollow space enclosed all-round by an outer wall and which has a receptacle adjoining the outer wall for receiving a rim of a flat object. At least one single-piece connector is lockingly fitted in the structural members through deformation of the structural members for securely joining the latter. Suitably, the structural elements have opposing receptacles when arranged parallel side-by-side for receiving a connector in form of a massive, preferably parallelepiped metal block. Each receptacle is of U-shaped configuration, with opposing longitudinal sides and a base extending between the longitudinal sides, with the base and one longitudinal side being formed by a wall section and with the other longitudinal side being formed by a cantilevered shank connected to the base.

Abstract: A sheet metal construction system is provided with a support strut having an elongated channel. A piece of sheet metal having an aperture is positioned on the strut with the aperture positioned over a portion of the channel. A rivet is received within the aperture and extends into the channel where it grips the strut. In this way, the aperture in the sheet metal can be positioned anywhere along the length of the channel and there is much greater freedom in the placement of rivets. The strut is also provided with channels for receiving braces and hangers for suspending a finished sheet metal product, such as a plenum for a clean room.

Abstract: A connector or connecting together elongated frame bars having T-shaped grooves on side surfaces is a single elongated structure having a longitudinally uniform cross-sectional shape. The connector has a central wall and is symmetric with respect to the plane of this central wall. Pairs of wings protrude from the central wall to be inserted into the grooves in the frame bars to be connected. The wings of one of the pairs protrude perpendicularly to the central wall. The wings of the other pair are cross-sectionally Z-shaped so as to be able to elastically engage in and with the grooves of the frame bars. Each wing has a mutually outwardly protruding part with a slope for being pressed against edges of the grooves such that the connector can be correctly positioned.

Abstract: A joint structure for connecting framing components such as sash members for a window is disclosed having separate functional and decorative junctions between adjacent framing components. The functional junction between components may be formed between opposing and abutting mitered mating surfaces defined at adjacent ends of the component, and a separate squared flange and cooperative recess may be formed on interior surfaces of the components for overlapping the mating surfaces and providing a decorative junction, for example, having the appearance of a mortise and tenon joint. The joint structure is particularly suited for use in custom or replacement applications whereby lineal extruded members formed of a heat weldable material may be cut to size having the aforementioned surfaces, and then heat welded together to form a custom sized framing structures such as a sash or frame for a window or door.

Abstract: A fastener assembly for engaging a lattice-like structure. The fastener assembly includes a main body having individual portions which interact with a vertical component of the lattice. An object of interest, having a plate upon which an emblem or decorative ornament may be mounted, is borne by the main body and operable to be releasably secured on it. The object of interest may be fastened or otherwise fixed to the main body by a fastener which is operable to engage the main body and the object of interest thus securing the main body and the object of interest on the lattice-like structure.

Abstract: In general, in one aspect, the invention features a fastener having two mating pieces. One of the mating has a rigid surface of thickness q, and a hole in the surface, the hole including a slot defined by two generally parallel edges separated by a distance r. The other mating piece has a base and a pair of wings held above the base to define two generally parallel channels spaced to accommodate the two parallel edges of the slot, the channels having a thickness greater than q, the span of the wings being greater than r.

Abstract: A fastening element for adjustably fastening a sheet to a frame is disclosed. The fastening element includes an anchor for providing the frame with studs and providing for a holder which engaging the sheet with a contact surface. The holder can be assembled with the anchor in a limited number of angular positions relative to an adjustment axis of the anchor, an inner surface of the holder engages with a peripheral surface of the anchor at each position, such that the contact surface assumes a plurality of different, non-congruent positions relative to said adjustment axis, the studs protrude beyond the holder in the direction of the adjustment axis. The invention also discloses a wall element.

Abstract: A modular play structure for children's games includes a plurality of corner components and a plurality of side components in which the assembly thereof are integrated. The corner components are formed by oblique extensions of material having an alternate slope with the free edges thereof curved inwards in opposite directions to form longitudinal guideways in said corner components for sliding and retaining edges of the side components which extend along the vertical sides of the side components, with which they are connected by thinner portions (20). The structure is applicable to the assembly and dismantling of constructions for children's games, without the need of auxiliary tooling or independent connecting means for the components integrating the structure.

Abstract: In a heat shield on a load-bearing structure, the heat shield has a multiplicity of tiles which are in contact with the load-bearing structure, are adjacent one another for substantially covering an area and are fastened by means of approximately L-shaped metallic restraints that are anchored in grooves of the load-bearing structure. The restraints may be completely screened by hot sides of the tiles facing towards a hot fluid. It is also possible to avoid the use of expensive fastening devices for the restraints. The configuration of the heat shield on the load-bearing structure is very highly thermally load-resistant, simple to manufacture and does not expose the tiles to any stresses which could be critical with respect to the brittleness of the ceramic.

Abstract: Truck tractors are connected to their trailers by fifth wheels and several companies manufacture fifth wheel assemblies. The tractors consist of a pair of longitudinally extending beams or rails to which the fifth wheel assemblies mount. Each fifth wheel manufacturer provides several types of fifth wheels, depending upon the type of trucking service being provided. Complicating the situation is the fact that the lateral spacing between the beams will differ. As a result of these variations, different types of mounting brackets have been developed to secure the fifth wheels to the trailer frames. The drop-over bracket fifth wheel mounting assembly consists of an L-shaped angle brace which complements and is slipped over the beam of the tractor; a bracket on its top connects to the fifth wheel. The flat plate method utilizes a thick, flat plate to span across and rest upon each of the beams; it also has a top side bracket.

Abstract: A storage or cargo system clamping assembly is utilized in a freight area of a motorized vehicle and semi-permanently attaches a storage system to the horizontal wooden slats found in the interior of a motorized vehicle. This storage system has vertically disposed struts for readily accepting a threaded screw-type member, which extends, non-restrictively, through the strut member whether a shelf leg or an iron frame and engages an L-shaped member having a threaded hole corresponding to the screw. Such a storage system and clamping assembly provides great versatility to freight and cargo vehicles, allowing for easy installation, adjustment, or removal of the storage system, without damaging the vehicle or leaving any telltale markings on the vehicle that would indicate that a storage system was utilized within the vehicle.

Abstract: A device (1) serves for connecting accessory parts (2) to formwork panels, compensating members or suchlike formwork members having stiffening webs or stiffening profiles (3) on their side averted form the forming surface. The device (1) has an essentially U-shaped cross section, the U-arms (4) having fastening locations (5), preferably bores, for the accessory parts (2) such as booms, adjustable props, platform brackets or the like, and in the position of use the U-crosspiece (6) butting and being drawn fast against a stiffening profile (3) and above all against a cross web (3b) provided on this profile (3).

Abstract: Supporting metal fittings for double beams comprising, double beams which are composed of two angles disposed in parallel with each other at a given interval, an upper metal fitting having notched portions in which the upper portions of the double beams are engaged, said upper metal fitting also having a tongue portion which engages between the double beams, a lower metal fitting having retainers by which the lower portion of the double beams is retained, said lower metal fitting also having a tongue portion which engages between the double beams, and a fixing member coupled to both the upper and lower metal fittings and inserted between the double beams for fixing them together, enabling the easy manufacturing of the supporting metal fittings for double beams for installing ducts, etc., using non-machined angles.

Abstract: A component carrier for accommodating circuit boards includes two front module rails and two rear module rails which connect two parallel side walls with one another. Between the side walls, guide rails for insertion of the circuit boards are provided at the module rails. The frontal faces of the rear module rails are provided with threaded holes for screwing on backplanes. Insulating strips which are equipped with fastening elements and are clamped to the module rails by means of these fastening elements serve to insulate these backplanes against the module rails. The insulating strips are provided with holes which correspond to the threaded holes in the module rails.

Abstract: The guide rails for the circuit boards of a component carrier are provided with centering pins on their undersides and with a spring elastic holding clamp at one end as fastening element whose base is attached to the underside and whose holding tongue is bent in the direction toward the centering pin, with the distance of the front edge of the holding tongue from the centering pin being slightly greater than the distance of the front edge of the long holes of the module rails from the front edge of the longitudinal web of the module rails. At the other end of the guide rails a resilient clamping web projects as a second fastening element parallel to the centering pin. The free end of the clamping web is provided with a clamping shoulder oriented toward the centering pin for gripping around the front edge of the longitudinal web of the module rails.

Abstract: A two-part clamping assembly and method for applying the clamping assembly to intersecting I-beams is disclosed. The clamping assembly is particularly beneficial at uniting the undercarriage I-beams of a mobile dwelling to intersectingly smaller I-beams of an auxiliary support system, during moderate and/or severe seismic disturbances. The clamping assembly includes a two-part connector designed to tightly engage the upper flange of the lower and smaller I-beam in such a manner that a clamp-lip horizontally protrudes over and is parallel to the bottom flange of the upper undercarriage I-beam. The clamp-lip is engaged at the bottom flange to the undercarriage I-beam, in the event of an earthquake, enabling the undercarriage I-beams to pickup the auxiliary support system. At the cessation of quake conditions, the undercarriage I-beams are reposited to the I-beam of the auxiliary and emergency support system.

Abstract: A grating fastener which can be used to connect grating to structural members, grating sheets to other grating sheets, or to mount a projection means above the grating for connection of other structural or mechanical devices. The grating fastener in one embodiment includes a jaw assembly which has teeth that provide extra strength and holding power for the grating fastener. The top cover or recess clip mounts on top of the grating and includes a square recess area which provides additional strength and durability. The grating fastener can be installed from above the grating by one person with no power tools required and without any holes required to be formed into the structure. The grating fastener is easily retrievable and thus can be reused as many times as desired.

Abstract: In a supporting clamp for mounting constructional components, in particular pipe conduits, a fixing means is formed by a bar extending transversal to the beam and being arranged at the lower surface of the beam flange. On both sides of the beam flanges (2a) of the beam (2) longitudinally extending supporting sheet members (3,4) are arranged suspended on rounded bearing bars (5,6). The supporting sheet members (3,4) have longitudinal slots (9, 10). A web plate (8) is arranged in these slots which is secured against vertical displacement.

Abstract: The scaffold fitting, which is for securing a scaffold tube to a steel plate or beam comprises a body (10) having a concave arcuate surface (20), a pivotal jaw (12) having a concave arcuate surface (18) arranged to face the arcuate surface (20). The jaw is pivotally mounted adjacent one end to the body and is provided with a clamping bolt (24) at the other end, the bolt being arranged to draw the jaw to the body to permit a scaffold tube to be gripped between said facing arcuate surfaces. A channel member (16) is secured to or integral with the obverse of the body, the channel member having opposed sidewalls arranged substantially perpendicular to the axis of the scaffold tube, the free ends of these sidewalls being remote from the body and having clamping bolts (38, 40) for clampingly engaging the steel plate or beam to one of the sidewalls.

Abstract: An attachment system joining the side edges of adjacent display panels. Each panel has first and second side edges, the first side edge of one panel joinable with the second side edge of an adjacent panel. The first and second side edges comprise first and second frame members affixed to the panel body. The first and second frame members are substantially identical, being coextensive and having outer faces with corresponding abutment surfaces thereon. Each first and second frame member has a longitudinal opening extending from its upper end through its lower end. Each first frame member has in its outer face a slot at its lower end communicating with its longitudinal opening and at least one bore. Each second frame member has, extending from its forward face, a headed stud near its bottom end, and at least one alignment stud. A U-shaped latch member has a handle position, a short leg and a long leg.

Abstract: A hingeless assembly for a modular display panel system is disclosed. The hingeless assembly includes a first portion which allows for attachment thereto of a flat plate wall panel and a second section for attaching an adjacent hingeless assembly thereto. The hingeless assembly of the present invention may be joined to another hingeless assembly with an angle of from zero to ninety degrees therebetween so as to form a display panel system of virtually any shape conceivable. The hingeless assembly attachment portion comprises an extending circular member and an extending parallel arranged cup-like member. The attachment portion of the hingeless assembly allows for connection thereto of another hingeless assembly with the cup-like and circular members of one of the assemblies respectively fitting with the circular member and the cup-like member of the other assembly so as to form a rotatable angle therebetween.