PILE-DRIVING AND EXTRACTION APPARATUS
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United States of America Patent
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N/A
Issued Date -
Dec 5, 2013
app pub date -
May 8, 2013
filing date -
May 30, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An apparatus for introduction of a vibro replacement column into a construction soil, having a tubular lance that is connected with a coupling part, on which at least two exciter cells are attached, distributed radially about the center axis of the lance. The cells each have a housing in which at least one shaft with at least one eccentric weight is disposed. The shaft is connected with a rotary drive. The exciter cells are oriented in such a manner that the eccentric weights of the exciter cells synchronize automatically during operation.
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