Shielded tamper and method of use for making aggregate columns
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United States of America Patent
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-
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.
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