Machine for making bored piles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 12, 2002
Grant Date -
Oct 25, 2001
app pub date -
Apr 10, 2001
filing date -
Apr 11, 2000
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A machine for making bored piles. The machine includes a vertical guide mast; a rotary drive head that is movable relative to the mast; and an auger having a hollow core and at least one helical blade. An extender tube has a bottom end that is secured to the top end of the auger, the drive head co-operating with the extender tube to rotate both the extender tube and the auger. A dip tube is slidably mounted in the hollow core of the auger and the extender tube, the dip tube having a top end connected to a concrete feed pipe. An annular actuator has a first end secured to the top end of the extender tube and a second end secured to the top end of the dip tube.
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