Patent ID: 7070378
Filing Date: 2006-07-04
Classification: B29C,F16B

Abstract:
1. A heatstake fastener for fastening at least two workpieces, comprising: first and second concentrically disposed shaft portions, the first shaft portion having a leading end and a length greater than a length of the second shaft portion, wherein said second shaft portion is adapted to be received in a hole defined in one of the workpieces; a central passage extending through the first and second shaft portions; and a plurality of slots disposed about an outer surface of the second shaft portion having a predefined angular separation, the plurality of slots defining a plurality of fastening portions when the second shaft portion is deformed, whereby the fastening portions are adapted to conform to a surface of the one of the workpieces beyond a perimeter of the hole, wherein the first shaft portion applies pressure against the fastening portions of the second shaft portion when the first shaft portion is deformed, and wherein said fastening portions of said second shaft portion engages said one of the workpieces when said second shaft portion is deformed.