Helical screw pile
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 25, 2015
Grant Date -
Sep 25, 2014
app pub date -
Oct 24, 2012
filing date -
Oct 25, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A helical screw pile includes a longitudinal shaft having a top end and a bottom end with a plurality of helical plates arranged on the shaft in increasing diameter from the top to the bottom. The largest diameter helical plate is located toward the bottom of the shaft. A second helical plate having a diameter smaller than that of the first plate is located above the first helical plate. A smaller third helical plate is located above the second helical plate so that the smallest is located toward the top of the shaft. The helical plates can be spaced apart along the shaft or coupled together in an end-to-end manner to form a continuous helix.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- E02D Class
- 275 Applications Filed
- 214 Patents Issued To-Date
- 77.82 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 3 Citation Count
- E02D Class
- 14.45 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 25, 2027 |
