Screw with two types of threads
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jun 7, 2007
app pub date -
Dec 7, 2005
filing date -
Dec 7, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A screw includes two types of threads which the first threads located close to the point of the shank and the second threads extend from the head of the screw, the two threads spiral in opposite direction. Said first threads have the outside diameter larger than the outside diameter of the second threads having a greater flank angle than the first threads so that the first threads can easily cut the fibers of the object and quickly merge into the object and the debris of fibers is heaped on the second threads which firmly fasten the screw in the object.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully