Patent ID: 7731454
Filing Date: 2010-06-08
Classification: E02D

Abstract:
1. Apparatus, comprising: an anchor assembly embedded in the ground that comprises a helical screw anchor having one or more helices coupled to an extension shaft, and a reducer section coupled to the extension shaft; one or more pipe sections attached end-to-end to one another; a coupler pipe section coupled to a proximal pipe section and that comprises removable coupler apparatus that releasably couples the coupler pipe section to the reducer section and anchor assembly to allow rotation of the reducer section and anchor assembly in clockwise and counterclockwise directions and that selectively decouples the coupler apparatus and coupler pipe section from the reducer section and anchor assembly to allow the coupler apparatus to be removed after decoupling to create a hollow cylindrical chamber from the surface of the ground to the anchor assembly and to allow the one or more pipe sections and coupler section to be extracted from the ground; reinforcing rods extending from at least the coupler pipe section to the top of the ground after removal of the coupler apparatus from within the pipe sections; and concrete that fills the coupler pipe section and the top of the reducer section and that substantially extends to the top of the ground to encase the reinforcing rods.