Patent ID: 6387533
Filing Date: 2002-05-14
Classification: B21C,Y10T

Abstract:
A hollow extruded profile with at least one laterally protruding flange, the hollow profile comprising a flangeless hollow-profile blank and a separate sheet-metal strip which subsequently forms the flange, joining elements which intermesh in a joining position being formed on the hollow-profile blank and on the sheet-metal strip, the joining element of the sheet-metal strip having undercut surfaces which are gripped from behind in an interlocking manner by the joining element of the hollow-profile blank in a non-releasable clamping action,wherein the sheet-metal strip is designed as a T-profile, and the joining element of the sheet-metal strip is formed by a transverse web, and wherein the joining element of the hollow-profile blank is designed as a groove which is formed in a hollow-profile blank wall and is covered by wall sections of the hollow-profile blank except for an approximately centrally situated slot which is at least the size of the wall thickness of the sheet-metal strip, in said groove the transverse web being mounted in a press fit, a rear side of the transverse web forming the undercut surfaces of the joining element of the sheet-metal strip, the wall sections which cover the groove bearing against said surfaces upon the groove being deformed by internal pressure.