Lamina-shaped borepiece for self-boring fastening elements
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United States of America Patent
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-
Sep 19, 2000
Grant Date -
N/A
app pub date -
Sep 6, 1996
filing date -
Mar 9, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lamina-shaped borepiece (4) for a self-boring fastening element (1) is provided at its front side with cutting edges (5,6) flanked by grooves (7,8) that extend approximately parallel thereto. Indents (9,10) with set-back cutting edges (11,12) are provided in the area of both front cutting edges (5,6), so that a kind of stepped borer is created. The indents (9,10) are formed in the area of the axial extension of the grooves (7,8).
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Cited Art Landscape
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