Boring unit for pile foundations
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United States of America Patent
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Mar 25, 2003
Grant Date -
Jul 18, 2002
app pub date -
Apr 17, 2001
filing date -
Jan 17, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Boring unit for pile foundations presenting a tracked vehicle facing the mouth of a hole, a mast (5) which is supported by the tracked vehicle, a rotary table (6) which is slidingly mounted along the mast (5), and at least one excavation element (7) which is connected to the table (6) and which presents a boring tool (8) at its own lower end. The boring unit may also include a handling device (11) which provides for moving the excavation element (7) and for moving further auxiliary excavation elements (19, 20) and which is also provided with a head (12) mounted on a top end of the mast (5) that is equipped with a hoist (13) and a central cable (14) which can be alternatively connected to the excavation element (7) via a drive unit (40) which is suitable for co-operating with the hoist (13) in order to rapidly move the auxiliary excavation elements.
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