Method of attaching a fastener to a panel
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United States of America Patent
Stats
-
Oct 1, 1985
Issued Date -
N/A
app pub date -
Jun 14, 1983
filing date -
Feb 2, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of attaching a metal fastener, such as a stud-bolt, to a panel. The fastener includes a self-piercing annular projecting wall defining a recess having a bottom wall and an inner side wall defined by the annular wall. The method includes locating the fastener adjacent a panel with the self-piercing end portion facing the panel opposite a die member. The fastener is then forced toward the die member, such that the annular wall pierces a slug from the panel into the central recess and against the bottom wall. The die member simultaneously deforms the distal end of the annular wall outwardly and the pierced panel edge is deformed from the plane of the panel against the external surface of the annular wall, interlocking the panel and fastener.
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