Shielded tamper and method of use for making aggregate columns
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 22, 2013
Grant Date -
Jun 28, 2012
app pub date -
Mar 5, 2012
filing date -
Jul 29, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tamper device including a shaft for driving a tamper head, and a shield. A tamper head is attached to the end of the shaft for tamping a lift of aggregate in a cavity formed in a ground surface. A shield attached to the tamper device and spaced a predetermined distance above a top surface of the tamper head, the shield having a predetermined length extending upwardly above the tamper head sufficient to prevent sidewalls of a cavity in soft soil in which the tamper device is used from failing and collapsing into the cavity. Methods of constructing aggregate columns with thicker lifts are also disclosed.
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
- 2 Citation Count
- E02D Class
- 5.92 % this patent is cited more than
- 12 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 | Apr 22, 2025 |
