Abstract: A connecting device joins a first workpiece that is provided with an interior space, particularly a bar-type hollow profiled member, to another such workpiece by a screw or similar element, the shank of which penetrates an opening of the workpiece and can be inserted into an opposite element within the interior space. The shank of the clamping screw penetrates a sleeve of the connecting device, which is fixed within a longitudinal groove of one workpiece such that a threaded area of the clamping screw protrudes beyond the face of the workpiece and is provided with a screw head at a distance therefrom. The screw head is able to be inserted into an undercut longitudinal groove of the other workpiece. The sleeve is removably fastened within the longitudinal groove of the workpiece and is connected thereto by a groove/spring system that runs perpendicular to the longitudinal axis (A) thereof.

Abstract: A nut-type element (30) which is to be fixed in an interior (16) of a profiled workpiece (10) or similar and is provided with a longitudinal extension (a) that exceeds the width (n) of an insertion cross-section (14), particularly a joining device for connecting a first workpiece encompassing the interior to another workpiece by a screw or similar member whose shaft penetrates a hole of the workpiece and can be inserted into a recess of the metallic nut-type element located in the interior of the workpiece. The nut-type element (30) is embodied as a rectangularly expanded member which is penetrated approximately in the center by a threaded bore (42) in the direction of the longitudinal axis (Q). The threaded bore (42) extends into an annular molded edge (44) on the surface (40) of the element. The annular molded edge (44) protrudes from the surface.

Abstract: A method for manufacturing a screw element (1) with a first external thread section (3) and with a second external thread section (5), wherein the screw element (1) to be manufactured is characterized in that the second external thread section (5) is positioned relative to the first external thread section (3) in such a way as to yield a braking torque when tightening the two external thread sections (3, 5) with an internal thread element (13), with the following procedural steps: the first and second external thread section (3, 5) are positioned relative to each other in such a way as to yield the braking torque while tightening the two external thread sections (3, 5) with an internal thread element (13), wherein the external thread sections (3, 5) are positioned via a defined, relative adjustment of the external thread sections (3, 5) in an axial direction and/or circumferential direction, wherein the first external thread (3) is fabricated at a compression molded first axial section (17), and the second ex

Abstract: In a connecting device for connecting a first extruded hollow profile (10), having a profile channel and at least one undercut groove space on a longitudinal groove (20), to another such workpiece by a screw element or other member which passes through an opening (20) in the workpiece and can be inserted into the interior (22) of the other workpiece, there is fixed to the end face (14) of the hollow profile (10) a strip-like socket profile (34) which runs radially with respect to the profile channel (12) and has at least at one end a stepped face (35) for receiving the screw element, which screw element in the rest position lies inside the side contours of the socket profile (34) and in the connecting position projects beyond the socket profile at least on one side and engages in a retaining manner in the undercut space of the other hollow profile (10).

Abstract: A nut-type element (30) which is to be fixed in an interior (16) of a profiled workpiece (10) or similar and is provided with a longitudinal extension (a) that exceeds the width (n) of an insertion cross-section (14), particularly a joining device for connecting a first workpiece encompassing the interior to another workpiece by a screw or similar member whose shaft penetrates a hole of the workpiece and can be inserted into a recess of the metallic nut-type element located in the interior of the workpiece. The nut-type element (30) is embodied as a rectangularly expanded member which is penetrated approximately in the center by a threaded bore (42) in the direction of the longitudinal axis (Q). The threaded bore (42) extends into an annular molded edge (44) on the surface (40) of the element. The annular molded edge (44) protrudes from the surface.

Abstract: A connecting device for the connection of a first workpiece provided with at least one undercut longitudinal groove to a second workpiece which in turn is provided with a longitudinal groove or grooves has at least one extent which exceeds the width of the narrow cross-section of the longitudinal groove or grooves and at least one main body which can be partially fitted into the narrow cross-section of the longitudinal groove and which has longitudinal lateral shoulder surfaces extending on both sides of a ridge bar or the like central portion. At least one pin-like connection member which is adapted to be connected to the workpiece or the profile bar passes through the main body in the region of the ridge bar; outside the main body the connecting device is provided with a connection element for the other workpiece.