Patent ID: 8096742
Filing Date: 2012-01-17
Classification: F16B

Abstract:
1. A rivet assembly comprising: (a) at least one workpiece having a first outer surface and an opposite second outer surface, a countersink located in each outer surface connected by a hole; (b) a blind rivet comprising a body and a tool-side flange, and a surface of the flange tapering outwardly from the outside surface of the body; and (c) a mandrel comprising an elongated stem and a head, the stem extending through the rivet prior to setting, the head being laterally larger than the stem prior to rivet setting, the head including a lip of axial thickness prior to rivet setting, and an outwardly tapering shoulder spanning between the lip and the stem, the shoulder further comprising first and second different and circumferentially continuous surfaces prior to rivet setting; the head being completely pulled through the rivet during rivet setting without severing the head from the stem of the mandrel; the pulling through of the head during setting causing the blind end of the rivet body to outwardly expand into the adjacent countersink; and the flange of the rivet being located in the adjacent countersink after rivet setting.