Mixing tool for treating a portion of soil
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United States of America Patent
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Feb 20, 2018
Issued Date -
N/A
app pub date -
Dec 5, 2013
filing date -
Dec 11, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A device (10) for treating a portion of soil comprises a rotary shaft (20), at least one deployable mixer tool (40) secured to the rotary shaft (20), and a longitudinal pipe (22) for injecting a fluid in the proximity of the mixer tool (40). According to the invention, the treatment device (10) further includes a boring tool (24) situated at the bottom end of the shaft (20), an outer tubular element (30) extending parallel to the rotary shaft (20), the rotary shaft (20) being arranged inside said tubular element (30), and a coupling system (50) between the rotary shaft (20) and the tubular element (30). In a first configuration, the coupling system (50) is suitable for constraining the tubular element (30) and the rotary shaft (20) to move together in rotation about the main axis (X), in at least one direction of rotation, and for constraining the tubular element (30) and the rotary shaft (20) to move together in translation along the main axis (X), at least in the downstream direction. These movements in rotation and translation can be released in a second configuration of the coupling system (50).
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