Apparatus for withdrawing a tube or pile which has been driven into the soil
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United States of America Patent
Stats
-
Oct 20, 1987
Grant Date -
N/A
app pub date -
May 27, 1986
filing date -
Jun 3, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Device for withdrawing a pile or the like which has been driven into the soil by a ram device which can perform blows downwardly and upwardly and which in upward direction has a lost-motion connection with the pile, which lost motion for efficient withdrawal is removed by the extension of hydraulic cylinders.
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Cited Art Landscape
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