Connecting structure for frames, scaffolds, lattice structure or the like

Claim 1

Joint and connecting structure for section elements in a frame, scaffold or lattice arrangement or the like, wherein section elements with plane axial end faces converge from different directions towards the structure, comprising: a support element having studs extending in the different directions from the support element, and having a radially outwardly extending flange at their respective outer end with a plane, axial end face; a plurality of sleeves each with threading at one end and having an overhung ridge or collar, and being rotatably seated respectively on the studs, so that the ridge of a sleeve of the plurality extends behind the flange of the respective stud preventing removal of the sleeves from the studs, each sleeve being axially retained on the respective stud by the flange of the stud and by said support element from which the stud extends, the spacing between said flange and said support element being sufficient to retract the sleeve, so that its threaded front end clears said end face of the flange; and a threaded end piece of a section being welded to the section proper, the end piece having a cylindrical portion of the same outer diameter as the section element, the sleeve having for at least a portion of its axial extension also the same outer diameter, the threaded end piece of the section having a reduced diameter for threaded insertion into the threaded portion of the respective sleeve, the threading of each sleeve adapted for secure connection with the said end piece of the section element, so that an end face of the end piece abuts said end face of the respective flange in a common plane, said flange and said section clear said common plane for lateral placement of said section without axial displacement upon unthreading of the sleeve from the section or prior to threading onto the section.