Thread rolling screw
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 18, 1992
Grant Date -
N/A
app pub date -
Jan 24, 1991
filing date -
Jan 24, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thread rolling screw has a continuous helical set of threads formed on a body. The threads have a tip section, an intermediate section, and a final section. In the tip and intermediate sections, the diameters of the crests progressively increase. In the intermediate section, relieved areas are spaced apart around the crests of the threads. In the final section, the threads are continuous and circular and of constant diameter. The crest of the last intermediate thread is the same diameter as the crests of the final thread section.
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