Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1996-01-11
1997-12-16
Graysay, Tamara L.
Hydraulic and earth engineering
Foundation
Columnar structure
172 40, 175 19, 175 21, 175 56, 366123, 405240, A01B 3500, A01B 3532, E02D 534, E21B 724, E21B 726
Patent
active
056977336
ABSTRACT:
An apparatus for use in compacting or densifying soils includes a tubular casing having a vertical longitudinal axis and an inside surface; a hollow tubular drive shaft aligned with the vertical longitudinal axis of the tubular casing and mounted for rotation therein; a drive motor for rotating the drive shaft; a carrier attached to the drive shaft for rotation therewith; and a cylindrical roller weight in rolling contact with the inside surface of the tubular casing. The carrier engages the roller weight for rotation about the vertical longitudinal axis of the tubular casing. The centrifugal force resulting from rotation of the roller weight is resisted by the tubular casing thereby causing vibration thereof.
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Graysay Tamara L.
Houser Kirk D.
Mayo Tara L.
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