Patent ID: 6761502
Filing Date: 2004-07-13
Classification: B21D,F16B,Y10T

Abstract:
A joint for joining a first ductile to a second ductile sheet comprising at least one deformable projection on an edge of the first ductile sheet, at least one aperture extending through the second ductile sheet, the at least one deformable projection on the first sheet extending through the at least one aperture in the second sheet, the deformable projection being deformed to prevent withdrawal of the deformable projection from the aperture in the second ductile sheet, the at least one deformable projection having an aperture therethrough to define two sides, a base and a head of the deformable projection, the base interconnecting the sides of the deformable projection, the head interconnecting the sides of the deformable projection, the head of the deformable projection being deformed such that the head expands at least a portion of each side of the deformable projection beyond the sides of the at least one aperture, characterized in that the base of the deformable projection extends a predetermined distance into the at least one aperture in the second ductile sheet, the deformable projection and the aperture through the deformable projection being shaped and configured such that deformation of the head fills the aperture in the deformable projection.