Pier tool and method of use
First Claim
Patent Images
1. A pier tool, comprising:
- a tubular body having a threaded uphole end and a threaded downhole end and defining a flow path therethrough; and
a tamping head disposed within the flow path of the tubular body and defining a tamping surface on a downhole side thereof and an off-center aperture therethrough.
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Accused Products
Abstract
A pier tool, includes: a tubular body having an uphole end and a downhole end and defining a flow path therethrough and a tamping head disposed within the flow path of the tubular body and defines tamping surface on a downhole side of the tamping head A method for forming a pier includes assembling a pier tool mandrel, a pier tool mandrel including the pier tool and forming a rammed aggregate pier using the pier tool mandrel.
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Citations
24 Claims
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1. A pier tool, comprising:
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a tubular body having a threaded uphole end and a threaded downhole end and defining a flow path therethrough; and a tamping head disposed within the flow path of the tubular body and defining a tamping surface on a downhole side thereof and an off-center aperture therethrough. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A pier tool mandrel for forming a rammed aggregate pier, comprising:
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a tubular body having an uphole and a downhole end and defining a flow path therethrough; and a tamping head disposed within the flow path of the tubular body and defining a tamping surface on a downhole side thereof and an off-center aperture therethrough; and a driving shoe disposed on the downhole end of the most downhole pipe piece. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for forming a pier, comprising:
assembling a pier tool mandrel, the pier tool mandrel comprising; at least a pair of pipe pieces; a pier tool disposed between the pair of pipe pieces, the pier tool further comprising; a tubular body threaded at the uphole and downhole ends thereof and defining a flow path therethrough; and a tamping head disposed within the flow path of the tubular body and defining a tamping surface on a downhole side thereof and an off-center aperture therethrough; and a driving shoe disposed on the downhole end of the most downhole pipe piece; forming a bore in the earth; depositing aggregate into the bore through the pier tool mandrel; ramming the aggregate, the driving force of the ramming being delivered by the pier tool; lifting the pier tool mandrel a predetermined distance; and repeating depositing, ramming, and lifting until the surface is reached. - View Dependent Claims (19, 20, 21, 22, 23, 24)
Specification