Patent ID: 6817079
Filing Date: 2004-11-16
Classification: B23P,F16B,Y10T

Abstract:
A method of flaring a fastener, including the steps of:a) providing a fastener having a flange and an elongated hollow shaft extending from a surface of said flange, said shaft having a passageway extending therethrough and opening at an end of said shaft; b) providing a flaring pin having a protrusion sized to be received in said passageway and, below said protrusion, at least one rib extending about a fraction of a circumference of said protrusion, and an open area adjacent said rib; c) inserting said flaring pin into a hole through a workpiece; d) reciprocating said shaft so that said end of said shaft overlies said protrusion; e) further reciprocating said shaft so that said shaft end engages said rib and said rib flares a portion of said shaft engaged by said rib radially outwardly to form a tang partially embedded in said workpiece, other portions of said shaft remote from said rib remaining unflared; f) said tang precluding said fastener from being pushed out of said hole or spinning with respect to said workpiece.