Screw method for forming a screw thread
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United States of America Patent
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Dec 2, 2014
Issued Date -
N/A
app pub date -
Jun 26, 2012
filing date -
Jun 29, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
In the case of a screw having at least one thread (26) that is formed by a rolling process, especially a flat-die rolling process, whereby the thread (26) consists of two ridges of material (28a, 28b) which are shaped from a blank (12) by means of cold-forming during the rolling process in such a way that the thread has a closing crease (32) where the ridges of material (28a, 28b) meet each other, it is provided that the closing crease (32) is situated in the area of a flank (30a, 30b) of the thread (26).
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