Hole-boring method and system for making cast-in-situ piles

Details Hole-boring method and system for making cast-in-situ piles Hole-boring method and system for making cast-in-situ piles

2005-12-27

2005-12-27

Thompson, Kenn (Department: 3672)

Boring or penetrating the earth

Processes

C175S019000, C175S323000

Reexamination Certificate

active

06978849

ABSTRACT:
The invention relates to a method of boring a hole using a boring system constituted by a simple auger and a dip tube slidably mounted in said auger, said dip tube being provided at its bottom end with a tool. The method comprises the following steps:causing said auger and said dip tube to descend and to rotate simultaneously, said tool on the dip tube being substantially level with the bottom end of the auger;interrupting the descent and rotation of said auger so that the auger constitutes anchor means for anchoring the boring system in the ground; andcausing the dip tube to descend and rotate on its own, whereby the tool of the dip tube performs boring by displacing ground at the bottom end of the borehole, thereby compacting the ground.

REFERENCES:
patent: 3470701 (1969-10-01), Turzillo
patent: 3690109 (1972-09-01), Lee
patent: 5919005 (1999-07-01), Rupiper
patent: 6641332 (2003-11-01), Alvarado
patent: 0 853 162 (1998-07-01), None
patent: 1 132 525 (2001-09-01), None
patent: 2 566 813 (1986-01-01), None
patent: 1 391 109 (1975-04-01), None

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