Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1997-07-25
2000-03-21
Bagnell, David
Hydraulic and earth engineering
Foundation
Columnar structure
405 50, 254 95, 175 55, 175 56, E02D 700, E02D 726
Patent
active
060395087
ABSTRACT:
A system for inserting elongate members into and removing elongate members from the ground. The system is a bottom drive system that is capable of applying crowding or extraction forces to the elongate member while at the same time vibrating the elongate member along its axis. A vibratory assembly is mounted by a shock absorbing assembly to a support base. A gear or other type of drive assembly is mounted on the vibratory assembly. Vibratory forces generated by the vibratory assembly are applied to the elongate member through the drive assembly, causing the drive assembly to vibrate with the elongate member. The elongate member extends through the center of the vibratory assembly such that the vibratory forces have a vibratory axis that is aligned with the lengthwise axis of the elongate member to prevent torsional or twisting forces from being applied to the elongate member.
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American Piledriving Equipment, Inc.
Bagnell David
Lee Jong-Suk
Schacht Michael R.
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