Self-tapping screw
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United States of America Patent
Stats
-
Jul 9, 1985
Grant Date -
N/A
app pub date -
Mar 3, 1983
filing date -
Mar 5, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For the purpose of assuring, during insertion in plastic, a highly stressable connection between screw and plastic with relatively small driving torques, a self-tapping screw is provided with a symmetrical thread profile whose thread angle (8) changes steadily from the crest (5) of the flank to the root (3) of the thread.
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