Helical ground anchor and method of its use

Abstract

A ground anchor system for anchoring a post comprises a base plate, a housing extending above the base plate, an anchor extending below the base plate, the anchor comprising a tapered helix having a thread encircling a tube which tapers inwardly towards the lower end of the anchor, and a boring tip at the lower end of the anchor. The tapered helical thread of the anchor firmly engages with the ground into which it is threaded to provide a solid support to a post inserted in the housing. Helix taper and length, and thread taper and pitch may be selected to optimize retention and lateral support of a post in a particular ground type.

Description

TECHNICAL FIELD OF THE INVENTION [0001] The present invention relates generally to ground anchors. In particular, the invention relates to a ground anchor for securing and installing posts for use in fencing or other construction. BACKGROUND OF THE INVENTION [0002] Several problems arise when securing posts for construction, such as are used for fences, greenhouses, sheds, etc. in loose, wet, inaccessible or otherwise difficult ground. Firstly, the retention of a post in the ground is lessened by variable soil conditions such as soil compactness, water saturation, and variable water levels which may reduce the amount of force required to dislodge a post. Secondly, traditional wooden posts remaining in wet soils have a limited life span, usually no more than ten years, as they are susceptible to rot and decay when immersed in a moist soil environment. Thirdly, installed posts, whether pounded or reinforced by a concrete pour, are difficult to maintain, extract or adapt, and are gener...

AI Technical Summary

Benefits of technology

"The invention is a ground anchor system for anchoring a post. It includes a base plate, a housing, an anchor, and a boring tip. The anchor has a tapered helix with a thread that tapers inwardly towards the lower end of the anchor. The system also includes a boring tip at the lower end of the anchor. The helix begins at the base plate and ends above the end of the boring tip. The system can be manufactured using injection molding, extrusion, or casting. The technical effects of the invention include improved stability and secure anchoring of the post, as well as reduced horizontal cross-sectional area of the housing."

Problems solved by technology

Several problems arise when securing posts for construction, such as are used for fences, greenhouses, sheds, etc. in loose, wet, inaccessible or otherwise difficult ground.

Secondly, traditional wooden posts remaining in wet soils have a limited life span, usually no more than ten years, as they are susceptible to rot and decay when immersed in a moist soil environment.

Thirdly, installed posts, whether pounded or reinforced by a concrete pour, are difficult to maintain, extract or adapt, and are generally non-reusable.

Such a helix is sufficient for temporary installations designed for easy removal, but would be insufficient for long term post installations.

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