Method and Apparatus for Making an Expanded Base Pier
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United States of America Patent
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Issued Date -
Mar 3, 2011
app pub date -
Sep 3, 2010
filing date -
Sep 3, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system for constructing a support column includes a mandrel with an upper portion and a tamper head. A feed tube extends through the mandrel for feeding flowable material to the head. The tamper head includes a lower enlarged chamber with a reducing surface at an upper portion for compacting material and restricting upward flow of aggregate. The tamper head is of a size providing an enclosed region for allowing cementitious materials to be placed therein. The system allows a support column including a cementitious inclusion on top of an expanded base to be built.
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