Expandable base bearing pile and method of bearing pile installation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 11, 2000
Grant Date -
N/A
app pub date -
Dec 1, 1997
filing date -
Dec 1, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Load bearing capacity of a pile which is driven into the ground to support any of various structures is markedly increased following an initial period of pile driving. The pile includes a hollow pipe having a lower end region with longitudinal grooves which extend upward from an earth piercing shoe at the base of the pipe. An expansive force is exerted on the lower end region after the initial pile driving to rupture the pipe at the grooves and to bend strips of the pipe material outward for a first distance. Further pile driving bends the strips further outward as downward motion of the strips is resisted by the rim of the shoe and by ground which underlies the strips. This enables use of shorter piles and reduces driving time.
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Cited Art Landscape
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