Screw
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 29, 2011
Grant Date -
Feb 19, 2009
app pub date -
Oct 16, 2008
filing date -
Jul 13, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention pertains to a screw with a first thread section comprised of a trailing and a leading thread segments respectively spiraled on a shank and a tip section. Distinctly, the leading thread segment defines a plane surface thereon to convergently engage with an adjacently thread peak on the trailing thread segment and further constructs a thread width greater than that of the trailing thread segment while aligning the two thread segments with a correspondent profile thread height. Such configuration of the plane surface accompanies its larger thread width to enlarge a drilling channel and accordingly renders an easy entry of the trailing thread segment into an object with less friction and higher screwing speed. Additionally, the debris is partially removed through the void between the enlarged channel and the trailing thread segment to avoid cracking the object, decrease drilling torque, and enhance the fastening capability.
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