A joint for a composite frame includes a first composite rod, a first shell abutting the first composite rod, a second shell abutting the first composite rod and disposed opposite the first shell relative to the first composite rod. The first and second shells are joined together such that composite rod is fixed therebetween. A method of forming joints of composite frame includes forming a composite frame by interconnecting a plurality of composite rods formed by an Automated Fiber Placement (AFP) manufacturing method around a mandrel, applying a first shell to the plurality of composite rods at a first location where composite rods are interconnected, applying a second shell at the first location opposite the first shell relative to the composite rods, and joining the first and second shells together with the composite rods at the first location disposed between the first and second shells.

An agricultural implement is configured to be advanced in a forward direction and includes an implement frame. The implement frame includes a pair of laterally extending fore-and-aft spaced frame members. The frame also includes a fore-and-aft extending interconnecting member that extends between the frame members and presents forward and aft ends. At least one of the frame members comprises a tubular beam presenting forward and aft walls. The forward and aft walls at least partly define an interior beam space, with a window opening being defined in a first one of the walls. The tubular beam receives a respective end of the interconnecting member so that the interconnecting member extends into and out of the interior beam space through the window opening. The respective end of the interconnecting member is welded to a second one of the walls.

A tube joint structure for industrial-style furniture rack includes a tube body. The tube body is assembled by two or more half-configured housings including a first housing and a second housing. The first housing and the second housing are respectively formed by stamping two metal pieces. Two recessed portions are formed on opposite sides of the first housing and the second housing, respectively. The recessed portion of the first housing and the recessed portion of the second housing enclose an accommodating space. The tube body has at least two tube openings communicating with the accommodating space.

A coupling device suitable for interconnecting two beam ends is provided, wherein the beam with the beam end has an elongate axis, where on a first beam end is arranged first interconnection units having two first parallel flange elements arranged with a mutual first distance x, wherein in each flange is designed a cut-out with a cross-section in the plane of the flange; a second beam end is arranged a second interconnection unit having a second flange, the width of the second flange across the plane of the second flange is smaller than or equal to x, and where largely perpendicular to the plane of the second flange, a connecting element protrudes on each side of the second flange, the cross-section of the connecting element in the plane of the second flange allows insertion of the connecting element into the cut-outs of the first flanges on the first beam end.

A scaffolding tube clamp having a pair of body portions defining a top and a base that are hinged together and receivable about a scaffolding tube. A rotatable bolt is received through a hole in the top a hole in the base portion. The bolt has a lower end with engagement means to releasably secure the bolt to the base. The bolt's head has a lower surface that is engageable with a surface on the top. The lower surface of the head, and the surface of the top that is engaged thereby, have complimentary ramped configurations such that when the bolt is rotated the ramps engage, resulting in the ramps moving the top toward the base. In an alternate embodiment the bolt is threaded with two sets of threads that have different diameters and different pitches and that are threadably received within the holes in the top and bottom.

A hold-down clamp for holding a cable tray on a strut channel includes a main body member extending between first and second ends, opposed side walls extending downwardly and perpendicularly from the main body member, and first and second side members extending from each of the opposed side walls. The main body member has a first end defining a clamp engagement portion and a second end defining an expansion guide portion. Each of the first and second side members includes a flange having a clamp engagement structure, a planar middle structure, and an expansion guide structure that are integrally connected to each other, and a clamping tooth, which is defined between the clamp engagement structure of the flange and the side wall such that the clamping tooth transitions into the clamp engagement structure of the flange and the side wall of the hold-down clamp.

A connector assembly and method for constructing a no-weld pipe fence, a no-weld fence end brace, or a no-weld fence corner brace. The connector assembly includes (a) a bolt, a threaded pin, or a hinge knuckle structure which is attachable to a fence post and (b) an attachment sleeve which can be slidably nested on the end of a pipe rail or brace member. The attachment sleeve is connectable to the bolt, threaded pin, or hinge knuckle structure in a manner which allows the pipe rail or brace member to be pivoted to a horizontal position or to any other desired angle on the fence post and then locked in place.

A connecting bracket is disclosed which includes a base having first and second edges aligned at an angle to one another. A first member extends up from the first edge and a second member extends up from the second edge. Each of the first and second members has an end wall. A first tongue projects outward from the end wall of the first member and a second tongue projects outward from the end wall of the second member. The first and second tongues are designed to engage two frame members. Three or more frame members can be joined together in this fashion to form a frame assembly. A pair of frame assemblies can be used to secure at least three sidewalls of a structure to form an aquarium.

A tonneau cover and a method of attachment are disclosed herein. In some embodiments, a self-energizing clamp can be used to retain a tonneau cover onto a side wall of a truck bed, or other vehicle bed. In some embodiments, the clamp can be rotated between a usage position and a storage position in order to prevent the clamp from incidental movement or harm while accessing the truck bed.

A connecting structure of a display rack includes an elbow connector, a locking member, and a transverse rod. At least one side of the elbow connector has a protruding portion. One end face of the protruding portion has a locking hole. The locking member is connected to the end face of the protruding portion. One end face of the locking member, facing the protruding portion, has a locking portion. The locking portion is rotatably connected to the locking hole. One end of the transverse rod is fitted on the locking member and is fixedly connected to the locking member. The display rack has a simple structure and is easy for installation.