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Title: Method of making a fastener strip

Abstract: A strip of fasteners such as pierce nuts is formed from a metal blank with no scrap resulting from the provision of a spacing between adjacent nut bodies, and without the difficulty and expense incident to attaching nut bodies to connecting elements. The body portion of a laterally flanged blank is severed in the transverse direction to separate nut bodies from the blank without fracturing the flanges. The flanges are severed in the longitudinal direction to form severed longitudinally extending flange segments integral at both ends with unsevered flange segments. When the flanges are straightened, the stretching of the severed flange segments resulting from shearing provides a spacing between adjacent nut bodies in the strip. The strip includes spaced apart nut bodies interconnected by continuous lateral flanges. The flanges include unsevered lateral flange segments integral with both sides of each nut body, and severed flange segments integral at both ends with the unsevered flange segments. Elongation of the severed flange segments provides spacing between adjacent nut bodies.


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Inventors: Grube, William L. (Lake Bluff, IL, US)

Application Number: 855138
Filing Date: 1977-11-28
Publication_date: 1980-12-09
Assignee: MacLean-Fogg Company (Mundelein, IL)
Primary Class(es): 470/25 29/417, 29/432, 411/179
Other Classes:
US Patent Ref:
1400244Dec, 1921Sleffel10/76.
1664480Apr, 1928Murphy10/76.
2206740Jul, 1940Burke10/86.
2254644Sep, 1941Cousino10/86.
2279574Apr, 1942Langmaid10/86.
3704507Dec, 1972Grube151/41.
3775791Dec, 1973Grube10/86.
3786528Jan, 1974Sol10/86.
3877133Apr, 1975Grube29/432.
4119827Oct, 1978Lenox29/509.

Other Refs: 46236050-6428
Nov, 1913FR
Mar, 1975JP

Primary Examiner: McCall, James T.
Assistant Examiner:
Attorney: Mason, Kolehmainen, Rathburn & Wyss