Self-attaching female fasteners and method of forming female fastener elements
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United States of America Patent
Stats
-
Mar 14, 2006
Grant Date -
May 6, 2004
app pub date -
Oct 23, 2003
filing date -
Oct 23, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of forming a female fastener including rolling a body portion strip having a midportion and flange portions on opposed sides of the midportion, piercing spaced openings through the midportion, cutting the strip to length between the openings, cold forming a separate generally cylindrical pilot portion having a length greater than the width of the midportion and a diameter greater than the opening through the midportion, preferably including radial splines, and press fitting the pilot portion through the opening in the midportion. The self-attaching female fastener thus includes a rectangular body portion and a generally cylindrical pilot portion having an end face spaced above a plane of the midportion and may be formed of a harder metal than the body portion.
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