Method of manufacturing of fastening elements
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United States of America Patent
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May 22, 2001
Issued Date -
N/A
app pub date -
May 5, 2000
filing date -
May 31, 1999
priority date (Note) -
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Abstract
A method for manufacturing of fastening elements (5, 6) and including producing a blank (1) having a length exceeding a combined length of two fastening elements, upsetting a head (2, 3) at each of opposite ends of the blank (1), heating a section of the blank (1) located between the opposite heads (2, 3) formed at the opposite ends of the blank, and, thereafter, pulling apart the heated section (4) until the heated section (4) is separated.
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