Abstract: A structural building system includes a plurality of pultruded fiberglass reinforced structure components configured to be used as a structural frame member of a building and a plurality of connectors.

Abstract: A connection made with a multi-purpose connector that can act as a holdown or tension tie and transfer tension, uplift, or lateral load, between a minimum nominal 2×4? wood framing member and a ½? diameter anchor. The anchor may be tied to a concrete foundation, another connector of the same type, a wood framing member, or other supporting members.

Abstract: A dual-use ladder and bridge modular system preferably includes tubes, gussets, flanges, and/or joints. In a preferred embodiment, the tubes, gussets, flanges, and/or joints are made of carbon fiber. A method connects and disconnects modular carbon fiber ladder segments. Another method creates a lightweight carbon-fiber beam with exceptionally high stiffness and strength using a combination of carbon-fiber braid material, uni-directional cloth, and pultruded carbon-fiber strips. A carbon fiber ladder segment and tube connectors are also disclosed.

Abstract: Connection plates for constructing buildings are disclosed herein. In one embodiment, a connection plate includes a generally planar insert member and a support member. Insert member has a first side configured for receipt in a slot defined by a structural member and a second side configured for receipt in a slot defined by another structural member. First and second sides collectively define inner and outer edges. Support member is coupled to first and second sides is generally perpendicular to insert member in two directions. Either (1) a portion of inner edge corresponding to first side is angled relative to a portion of inner edge corresponding to second side and support member is coupled to inner edge; or (2) a portion of outer edge corresponding to first side is angled relative to a portion of outer edge corresponding to second side and support member is coupled to outer edge.

Abstract: An assemblable enclosure includes sidewalls 111, which are made of corrugated plastic sheets and surround a predetermined space, and a ceiling 15, which is detachably mounted on the upper part of the sidewalls 111 and made of a corrugated plastic sheet. The detachable ceiling 15 is attached to the upper part of the sidewalls 111 with hook-and-loop fasteners.

Abstract: A device for braced frame assembly and method of using same in connecting brace members to a beam of a braced frame is presented. The braced frame connectors of the invention have a preferred application in cold formed steel frames in light-framed construction but can also be used effectively in braced frames of heavy-frame construction and can provide sufficient rigidity while adequately resisting lateral loads.

Abstract: The invention relates to a mounting system, in particular for solar modules (1), consisting of supports (2) with a closed hollow box profile (3), with connectors (4) for solar module fastening means, and connectors (5) for roof fastening means. At least the connectors (4) for the solar module fastening means are formed from longitudinal groove pairs—or longitudinal flange pairs in or on the hollow box profile (3) that are arranged at a distance from each other. The fastening means for the solar module (1) or solar modules (1) in the area of the support consist of a clamping piece with a shaped part (8), with each shaped part (8) having at least two webs (9.1, 9.2), arranged opposite each other on the shaped part (8) whereby at least one positive click connection with one of the groove pair—or flange pairs can be made by means of the ends remote from the shaped part (8), and the shaped part (8) has at least one bore hole (11) for the insertion of a fastening bolt (14).

Abstract: The invention relates to a corner accessory for placing at the junction between at least two ducts that extend in different directions, the accessory comprising two distinct flaps, one of which includes a projecting element and the other of which includes a circular opening receiving said projecting element to allow said flaps to pivot about a pivot axis, the circular edge of said opening opening out locally to a straight slot that extends radially relative to the circular edge of said opening and that opens out into a free edge of said flap. According to the invention, said projecting element is a cylindrical wall presenting firstly an outside diameter equal, ignoring clearance, to the inside diameter of said circular opening so that during pivoting of one flap relative to the other, the outside face of said cylindrical wall slides over the edge face of the circular edge of said opening, and presenting secondly a height that varies around its circumference.

Abstract: The invention relates to a corner connector for glass pane spacers comprising a first and a second connecting element, on each of which a spacer can be mounted, and a corner element, which joins the two connecting elements at an angle, wherein the corner element has two lateral surfaces facing the glass panes, two end surfaces facing the respective spacer and an outer surface. The corner connector is characterized in that a metal foil is applied to the outer surface and at least partially to the lateral surfaces and the end surfaces, and butyl is provided in the area of the end surfaces, which creates a seal between the metal foil and the inserted spacer.

Abstract: A three-dimensional joint structure of a support frame for vehicles can include two hollow profiles, of which the first hollow profile has at least one planar side and is cut through around its circumference except for a web lying in this planar side and is bent around this web. The second hollow profile has at least two planar sides that press against the ends of the first hollow profile resulting from the cutting and bending. The two hollow profiles are integrally joined to one another at the edge region of the ends.

Abstract: The present invention is a modular construction method for enclosures and counter assemblies. The counter assembly has a series of modules, which can be added or removed at will. The counter assembly comprises an innovative metal framework having modules connected by angled splices to enhance customization into variable shapes and sizes. Cross-supporting framework and perimeter rails may be added to incorporate customized components for drawers, shelving, appliances, storage, access doors, vents, and the like. The framework is capable of supporting countertops formed in a shape corresponding to the shape of the modular assembly. Side panels may be supported on the framework for purposes of enclosing the assembly, said panels being attached by a plurality of metal clips designed to fit into the metal framework with extensions designed to secure the side panels. The framework and components of the counter assembly are moveable, rearrangeable, and replaceable.

Abstract: A corner bracket apparatus for a slidable frame includes a body having first and second arm portions depending therefrom, the first and second arm portions being oriented generally orthogonally relative to each other and adapted for insertion into respective first and second hollow framing members of said slidable frame, the first arm defining an outboard side edge and an inboard side edge generally opposite the outboard side edge, and an internal pocket positioned interiorly of the outboard side edge.

Abstract: In order to arrest a first profile, which has a groove provided with an undercut, a second profile, which has a location opening, whereby preventing these profiles from rotating, there is provided the invention provides a tilting connector in the form of a body extending along a longitudinal extension for fastening in a groove, which is provided with an undercut, of the first profile. This body comprises: a base; a web, which projects from the base, extends along the longitudinal extension and which serves to laterally fasten the tilting connector in the groove, a base area projecting above the web forming a stop surface for interlocking with the undercut; a first hole for an anchor bolt for inserting into a second profile, and; a second hole for a lever bolt.

Abstract: A holder for a support arm system having a fastening section with a receptacle into which a profiled support element is inserted and fastened on the holder. The holder contains one or several compensating elements for aligning the profiled support element and the receptacle has a support section, at least some portions of which are matched to an exterior circumference of the profiled support element. For making possible a simple and continuous adjustment of the profiled support element for compensating deformation under load, the receptacle has, directly or indirectly adjoining the support section, a regulating area which is wider in cross section than the support section and into which the profiled support element extends. The support section together with the regulating area forms a pivot seating for the profiled support element.

Abstract: A method of joining two components of a vinyl frame provides first and second components each having an end and having surfaces defining at least one channel open at the end and extending into the associated component. A coupling structure is provided and has at least a first member and a second member and includes energy receiving structure. The first member is inserted to extend at least partially into the channel of the first component and the second member is inserted so as to extend at least partially into the channel of the second component so that the energy receiving structure is generally adjacent to certain surfaces defining the associated channel. Energy is directed to the coupling structure to cause the energy receiving structure to fuse with the certain surfaces, thereby joining the first and second components together. Improved component sealing and water pathways are also provided.

Abstract: A bracket system for forming gate assemblies comprises at least two brace members that are rigidly attached to hinge assemblies. The brace members are adapted to be attached to support members to form two corners of a gate box functioning as the structural portion of the gate assembly. The hinge assemblies are adapted to be rigidly attached to a fence post to allow the gate assembly to pivot relative to the fence post. Gate assemblies of arbitrary height and width can be formed using the bracket system.

Abstract: A frame member miter guide or brace has first and second legs configured for insertion and engagement with adjoining frame members at a mitered joint, the miter guide having a stop with stop edges which accurately position intersecting walls of the frame members for precise alignment of the mitered joint. Stop edges of the stop correspond with the correct positions of the frame members, so that the members are held in place for final attachment and installation. Positive engagement of edges of the frame member walls with the stop edges insures highly accurate orientation of the mitered joint. A fracture line for welded installation of the frame members, and a leg profile which minimizes damage in handling and installation is also described.

Abstract: A bracket system for forming gate assemblies. Four separate brace members are provided, and two of the brace members are rigidly attached to hinge assemblies. The brace members are adapted to be attached to support members to form the corners of a gate box functioning as the structural portion of the gate assembly. The hinge assemblies are adapted to be rigidly attached to a fence post to allow the gate assembly to pivot relative to the fence post. Gate assemblies of arbitrary height and width can be formed using the bracket system of the present invention.

Abstract: A frame joining structure for electrical and electronic equipment housing cabinets, in which ends of frames are simplified in shape to dispense with complex cutting and which possesses excellent strength and waterproof property. Ends of outer side surfaces (4) of three mutually orthogonal frames (1a, 1b, 1c), which constitute a framework of a cabinet, are cut at two planes of ±45° relative to a plane defined by other two frames to be point-shaped. These ends are joined together directly or through a corner member (20) having the same configuration as that of the ends to constitute a firm corner portion.

Abstract: A guide rail clamp comprises a first clamp half and a second clamp half, which when fastened together form a slot therethrough adapted to fit a cylindrical support rod or a flat rectangular support bar. The two halves of the clamp may be held together by a pair of bolts extending through a pair of threaded sleeved nuts, which securely grip the bolts when the two clamp halves are spaced slightly apart. In a preferred embodiment, two pegs extending from one clamp half into holes located in the second half help align and secure the grip of the clamp and minimize motion of the rail. To securely fasten the support rod or support bar inserted within the slot, a bolt may be used to bias the support bar or rod against the edges of the slot.

Abstract: A connector for a modular safety rail comprises a unitary combination of a body portion and two socket formations. The body portion comprises first and second flange formations which each define a substantially planar support surface, the support surfaces lying substantially perpendicular relative to one another in an ‘L’ shape configuration as viewed along the line of intersection of the support surfaces. The support surfaces facing outwardly, and opposite inwardly facing surfaces of the flange formations each have integral therewith a respective one of the socket formations. Each socket formation has an outer end for receiving a tube or rod and an inner end region which is integral with the inner end region of the other socket formation of the pair, the longitudinal axis of each socket formation extending substantially perpendicular to the line of intersection of the support surfaces.

Abstract: A cardan joint is provided with a centering disk that is moveable relative to the intermediate coupling member. The invention also provides a centering disk including a plurality of tabs to support movement of the centering disk relative to the intermediate coupling member. The invention also provides a spring positioned in the centering disk to outwardly bias the ends of the shaft to maintain the contact between the shaft and the centering disk. The invention also provides means for biasing the centering disk relative to the intermediate coupling member.

Abstract: A connector for an enclosure comprises: a main panel having inner and outer surfaces and a front end; a toe kick support panel extending generally perpendicularly from an intermediate portion of the inner surface of the main panel; a toe kick retaining flange extending generally perpendicularly from the front end of the inner surface of the main panel, the toe kick retaining flange, the toe kick support panel, and the main panel inner surface defining an open toe kick channel; and a side edge retaining flange extending generally perpendicularly from the front end of the outer surface of the main panel. In certain embodiments, the toe kick retaining flange and the side edge retaining flange are directly opposite each other across the main panel.

Abstract: A plastic corner device for installing drywall to form an inside corner. The corner device has a large corner with a smaller corner facing it to form a right parallelepiped, whose sides equal in length the thickness of the drywall panels. The corner device and/or the panels have adhesive applied to them, and the edges of the panels abut the smaller corner to form the inside corner. Adhesive is then applied to the rearward surfaces, and the assembly of the corner device and the panels is adhered to a building structure.

Abstract: A connector for providing a load supporting connection between a first “supporting” structural member and a second structural member supported thereby comprises a flange and an integral web formed with one or an array of two or more spaced slots. The flange may also be formed with an array of spaced slots. In a preferred embodiment, the slots of the flange have a lower portion dimensioned to receive a head of a stud which projects from a surface of the supporting member and a coextensive upper portion dimensioned to receive the shank of the stud. The slots of the web have an upper portion dimensioned to receive a head of a stud which projects from a surface of the supported member and a coextensive lower portion dimensioned to receive the shank of the stud. In a preferred embodiment, the width of each shank receiving slot portion is less than the width of the respective stud head.

Abstract: Components of and method for making a frame member framework having panel recesses accepting structural panels in a plane tangent to the exterior of the frame member. The tubes and fittings allow easy assembly of large structures. The panels secured within the panel recesses bear loads imposed on the structure and minimize torque at the fittings. The finished structure is streamlined, with flush junctions of all components. Alternative embodiments include panel recesses in angular or channeled shapes which act to secure the panels to the framework, and other panel securing attachment which are externally invisible on the completed structure. Panel securing means include screws, bolts, studs, pins, adhesives, welding and equivalents. End fittings are secured to frame members by any common and known ways. Frame members, fittings and panels may be made of any of a wide range of materials including metals, alloys, plastics, rubbers, wood, and composites.

Abstract: A bed frame section comprising a pair of telescoping members adapted to be connected or utilized within a bed frame structure. At least one adjustable leg connector is mounted on one of the members. The leg connector includes a generally inverted U-shaped strap that extends over the member and an extension that extends downwardly from the U-shaped strap and includes an opening for receiving an upper portion of a leg. The upper portion of a leg is inserted into the opening of the extension, and the leg and extension are secured together by a bolt and nut assembly. By tightening the bolt the inverted U-shaped strap is closed around the member. When the bolt assembly assumes a loosened state, the inverted U-shaped strap along with the attached leg can be moved along the length of the member.

Abstract: A unitary connector made from thin sheet metal is provided that forms a substantially concealed connection between a held member (especially a joist) at the end face thereof to a holding member (especially a header). The connector has a first flange to be applied against the end face of the held member to be connected and a second flange extending away therefrom and which is applied against the holding member, wherein these flanges or fastening flanges cam each be provided with fastener openings (generally round), through which fasteners, such as nails, dowel pins, screws or bolts, can be driven into the members to be joined to one another. The second flange is folded over itself to give it strength. A third flange can extend from the second flange over the held member to strengthen the connection.

Abstract: A fastener for use in forming a joint of a framework for a patio enclosure. The joint includes an end of an elongated first frame member fastened to a side of an elongated second frame member. The fastener includes a body having a first end and a second end defining an outer surface therebetween. The second end is adapted to fit in a hollow portion of the first frame member. The fastener further includes a plate extending outwardly from the body. The plate is adapted to be fastened to the side portion of the second frame member. A stop extends outwardly from the outer surface of the body. The stop provides for positioning of the fastener relative to the first frame member when the second end is positioned within the hollow portion of the first frame member.

Abstract: A connector device assembly of the add-on type and suitable for securing a second member, such as a metal tube, as a branch extending from a position between the ends of a first member, such as another metal tube, without the need to slide components along the first member includes two connector devices each having a first body region which defines a recess formation to accommodate a first member of a structural assembly, and at least one of the connector devices including a second body region for securing relative to a second member which is required to be connected to the structural assembly, the two connector devices each having at least one edge formation provided with an aperture which extends substantially parallel with the longitudinal direction of the first member and respective edge formations of the two connector devices being aligned in the assembly to receive a locking member extending therethrough, the locking member being arranged in the assembly to be loaded substantially only in shear to hold

Abstract: A corner mold is provided for use in a seal system which protects the corner of a structure from damage and deterioration and creates a barrier covering the gap between adjacent structures. The corner mold includes two external members distanced apart by an interconnecting spacer sized to match the width of the structure. In addition to the corner mold, the seal system includes two moldings and an adhesive which is placed in joints between the corner mold and moldings.

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: An apparatus for internally framing a vinyl gate suitable for use with vinyl fencing provides completely hidden structures formed of sheet metal and assembled for greater strength and rigidity. Beams may be formed as channels from sheet metal, which may be placed together, with open edges of the channel juxtaposed and positioned within each other, in order to provide fully closed perimeters for beams. Various types of corner ties are provided to support loads and squareness required between vertical and horizontal members of the frame. In various embodiments, vinyl sleeves may be placed over various beams before or after the beams have been fully assembled, as appropriate, possible, or required. In certain embodiments, the entire systems of gate framing may be shipped in a long format appearing primarily as linearly-extending, channel-shaped stock. Likewise sheathing can ship as long stock.

Abstract: Components of and method for making a tube and fitting framework having panel recesses accepting structural panels in a plane tangent to the tubes. The tubes and fittings allow easy assembly of large structures. The panels secured within the panel recesses bear loads imposed on the structure and minimize torque at the fittings. The finished structure is streamlined, with flush junctions of all components. Alternative embodiments include panel recesses in angular or channeled shapes which act to secure the panels to the framework, and other panel securing devices which are externally invisible on the completed structure. Panel securing devices include screws, bolts, studs, pins, adhesives, welding and equivalents. Fittings are secured to tubes by connectors which may engage the interior of the tube in known ways, or by use of O-rings or rubber flanges. Tubes, fittings and panels may be made of any of a wide range of materials including metals, alloys, plastics, rubbers, wood, and composites.

Abstract: A mounting element (12, 12a, 12b) for securing components, in particular profile bars, and a cap (14, 14a, 14b) for covering the mounting element (12, 12a, 12b) are provided. Indentations (31, 39) are provided in lateral ribs (22, 36) of the mounting element (12, 12a, 12b) and/or of the cap (14, 14a, 14b). This makes the grip better and/or facilitates aligning the mounting element (12, 12a, 12b) and/or the cap (14, 14a, 14b).

Abstract: The present invention is directed to a joint of a supporting frame, which includes a basic unit to connecting with one to six connecting units at a related side plate. The connecting unit can connect with related crossbeams to assembling a supporting frame; wherein each connecting unit has provided with a folded elastic plate at both ends with a related groove therebetween to engage with an end of the crossbeam. The basic unit is cubic and has one side opening, which can be sealed by a door to form a complete cubic hollow unit. By use of the basic unit engaging with desired connecting units, it provides the joints with various configurations, which can be used at any position in a supporting frame.

Abstract: A coupler structure for steel pipe conjoinment that provides for user DIY assembly having a coupling block overlapping inner sides of two horizontal sections of steel piping, a bolt inserted through the coupling block to fasten together the two horizontal sections of steel piping, a locating hole formed in the ends of each inner side of the two horizontal sections of steel piping, and a threaded hold tapped at a suitable position in the front corner of a straight section of steel pipe. A junction contact element extends from each of the two ends of the coupling block with insertion tabs fitted into the locating hole in each of the two horizontal sections of the steel piping. A semi-circular opening is formed at the mutually facing ends of the two horizontal sections of the steel piping such that after the semi-circular openings are brought together, their position is in a state of alignment with the threaded hole of the straight section of steel pipe.

Abstract: The present invention is a corner molding particularly useful in the construction of juvenile furniture. The corner molding has an elongate body with an interior, a first rounded side, and a second side opposite the rounded side, with a pair of acutely V-shaped channels extending along the length of the body. The first rounded side and each of the V-shaped channels preferably form a pair of rounded outer edges therebetween. Each V-shaped channel receives a substantially rectangular edge of a planar member to form a rounded corner such that the planar members are held substantially perpendicular relative to each other, with smooth joints between the outer edges and planar members. The present invention further provides a method of attaching a pair of planar members within acutely V-shaped channels of a corner molding to thereby provide a rounded corner having smooth joints between the planar members and the corner molding.

Abstract: A structural joint assembly is provided and comprises a pair of quadrilateral elongated hollow elements with one end of one of the elements being swaged, the swaged end of one element and the unswaged end of the other element being disposed in a telescoping relation, and the two elements being interconnected.

Abstract: A tubing connector adapted to receive portions of a plurality of elongate substantially rigid tubes and to hold them in a defined angular relationship relative to each other. The connector has a body with a plurality of tube-receiving and holding apertures formed therein. Stop elements in the apertures spaced inwardly from the mouths of the apertures limit the extent to which end portions of tubes may be inserted longitudinally into the body.

Abstract: The invention relates to a wheelchair having side frames including tube sections having a tube-bend at the front bottom end of each in an area proximate to where a bearing housing is mounted. The bearing housing has an approximately vertical bearing bore for accommodating an upwardly directed axle pin of a steering fork for holding a caster. The bearing housing also has an adjustment device, which is integrated in the screw mounting, for adjusting the bearing housing with respect to the side frame in order to align the bearing bore perpendicular to the ground. The bearing housing is mounted to the tube-bend via a guide passage of a clamping shell, which is correspondingly curved and is open on one side. The clamping shell is fitted laterally to the tube-bend and, is displaceably guided and is fixable in the desired position by tightening at least one clamping screw.

Abstract: The present invention is a corner molding particularly useful in the construction of juvenile furniture. The corner molding has an elongate body with an interior, a first rounded side, and a second side opposite the rounded side, with a pair of acutely V-shaped channels extending along the length of the body. The first rounded side and each of the V-shaped channels preferably form a pair of rounded outer edges therebetween. Each V-shaped channel receives a substantially rectangular edge of a planar member to form a rounded corner such that the planar members are held substantially perpendicular relative to each other, with smooth joints between the outer edges and planar members. The present invention further provides a method of attaching a pair of planar members within acutely V-shaped channels of a corner molding to thereby provide a rounded corner having smooth joints between the planar members and the corner molding.

Abstract: A device comprising a corner strut (1) which has folding planes (2) and (2′) therein, a connecting plane (3) and bolt holes (4, 5, and 5′), solid coupling stands (6 and 6′) having a bearing face (7) therewith, and lateral struts (11 and 11′) having supporting projections (14 and 14′) therein. The coupling stands (6 and 6′) are connected with the lateral struts (11 and 11′) by inserting bolts (15 and 15′) into bolt holes (9 and 9′) and tightening them to flutes (12, 12′, 13, and 13′) of the lateral struts. Then, the coupling stands having the lateral struts connected therewith are combined with the corner strut by connecting the bearing face (7) of the coupling stands with the connecting plane (3) of the corner strut (1) by tightening bolts (10) wherein the coupling stands are facing the folding planes (2 and 2′) of the corner strut (1).

Abstract: A frame construction includes at least one nodal connection element and several tube-shaped frame elements connected thereto. The frame elements and the nodal connection elements are manufactured by hydraulic internal high pressure forming and are joined via plug-type connections. Each nodal connection element has at least two connections for adjoining frame elements. The nodal connection element consists of at least two internal-high-pressure-formed tube-shaped hollow bodies in a nested configuration. The hollow bodies are made of different materials, and have different cuts in the area of the connections--viewed in the longitudinal direction of the respective connection, allowing connection with frame elements made of corresponding different materials. In the area of each connection, one of the two hollow bodies, in addition to being connected in a plug-type connection with the adjoining frame elements made of the same material, is connected by an additional connection.

Abstract: The present invention is a clip used in the construction of suspended ceiling grid systems for the hanging of drywall or other panels. The clip provides a versatile means of joining two suspended grid beams at various points of transition between two grid beams, such as a transition in the ceiling surface, thus eliminating the need for a different means of joining in each situation.

Abstract: In combination with a bicycle handlebar having a crossbar portion connected to a bicycle stem, a handle and torso support assembly, including: (1) a pair of handle extensions having a handle clamp affixed at one end of each handle extension, and (2) clamping means for securing the handle clamps to the crossbar portion, the handle extensions extending rearwardly and upwardly to a region rearward from the crossbar portion to define a rider position whereby the rider's hands are located under the rider's upper torso when steering a bicycle using the handle extensions. The handle and torso assembly further includes a torso support extension that is secured to the crossbar portion with a torso clamp. Thus, the handle and torso support extensions provide for a bicycle rider to assume an aerodynamic forward leaning rest position in which his silhouette is minimized while conserving energy.

Abstract: The present invention relates to engagemnent devices and coupling members for forming a structural frame work for hollow tubes. One form of engagement device comprises a hollow sleeve (1) through which a tube (31) may be passed. The hollow sleeve has a deformable flared portion (2). A further hollow sleeve member (12) is immovable on the outside of the first sleeve and has a surface (13) arranged to co-operate the flared portion to cause it to deform to grip the tube (31). A further engagement device comprises a hollow sleeve portion (100) which is distendable to grip a tube mounted on its surface. A trustoconical wedge (101) is movable within the hollow sleeve potion (100) to cause to distend. A number of engagement devices may be connected together to form coupling members for connecting tubes to form a structural frame work.

Abstract: A kit for assembling modular support structures is described. The kit comprises structural members and joining means. The joining means further comprise straight members, angle members and "T"-shaped members. A variety of different support structures of different shapes and sizes can be assembled by inserting the ends of the structural members into the ends of the various joining means. Furthermore, angle members may be arranged to include wheeled means, allowing for the construction of mobile support structures.

Abstract: A playpen includes a looped lower frame, a looped upper frame, a plurality of couplers, and a plurality of posts. The lower looped frame includes a plurality of interconnected lower frame sections having adjoining ends. The looped upper frame is disposed above the looped lower frame, and includes a plurality of interconnected upper frame sections having adjoining ends. The couplers interconnect the adjoining ends of the upper and lower frame sections. Each of the couplers includes a tubular portion which has two opposite open ends for insertion of a pair of the adjoining ends of the upper and lower frame sections, and a socket portion which projects from the tubular portion between the open ends and which has a socket hole. The posts bridge the upper and lower frames and are connected to the couplers.

Abstract: The invention relates to a device for fitting a control panel to the lower front edge of a control device. To provide the connection there are specially shaped corner pieces provided with screw sleeves which are inserted into screw apertures in the frame and secured therein by screws.