# US 10,480,144 B2 · Auger grouted displacement pile

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- Number: US 10,480,144 B2
- Document ID: US10480144B2
- Status: Granted
- Kind: B2
- Application number: 14/577,363
- Filed: 2014-12-19
- Published: 2015-06-25
- Granted: 2019-11-19
- Earliest claimed: 2006-09-08
- Applicants: Benjamin G. Stroyer
- Inventors: Benjamin G. Stroyer
- Web page: https://patentgrep.com/patent/US10480144B2

## CPC

- E02D 5/34: Concrete or concrete-like piles cast in position {; Apparatus for making same (E02D5/50 takes precedence; moulds E02D5/665; placing, removing moulds E02D7/00 - E02D11/00; placing the concrete E02D15/04)}
- E02D 5/36: making without use of mouldpipes or other moulds
- E02D 5/52: Piles composed of separable parts, e.g. telescopic tubes {; Piles composed of segments}
- E02D 5/56: Screw piles {(placing piles by screwing down E02D7/22)}
- E02D 11/00: Methods or apparatus {specially adapted} for both placing and removing sheet pile bulkheads, piles, or mould-pipes (features relating to placing only E02D7/00, to removing only E02D9/00 {; placing apparatus which without special provisions, can be operated to remove, e.g. vibrating drivers E02D7/00})
- E02D 27/12: Pile foundations
- E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)}

## Abstract

Disclosed in this specification is a method and apparatus for placing an auger grouted displacement pile or helical pile in soil. The pile has an elongated shaft with at least one lateral compaction protrusion which establishes a regular circumference in the supporting medium. The pile also has a helical blade configured to move the pile into the supporting medium. The bottom of the shaft includes means for forming irregularities in the circumference after compaction by the lateral compaction protrusion. The bore is filled with grout while leaving the pile in the soil.

## Claims

### Claim 1

An auger grouted displacement pile for being placed in a supporting medium comprising:
an elongated pile shaft;
extending from the pile shaft, at least one lateral compaction protrusion which establishes a bore with a regular circumference in the supporting medium, the established bore having a diameter that is larger than the diameter of the elongated pile shaft;
a helical blade having a first handedness configured to move the pile into the supporting medium;
means for forming irregularities in the regular circumference, the irregularities extending over a length of the bore; and
a helical auger configured to move material, wherein the means for forming irregularities laterally extends from the at least one lateral compaction protrusion, the means for forming irregularities being elongated and wrapping about the shaft by at least forty-five degrees.

### Claim 2 (depends on 1)

The pile as recited in claim 1, wherein the elongated pile shaft is hollow and terminates in a hole in a bottom section of the elongated pile shaft configured to permit a drill to be passed through the elongated pile shaft and through the hole to drill into bedrock.

### Claim 3 (depends on 1)

The pile as recited according to claim 1, wherein the at least one helical auger has a handedness which is the same as the first handedness of the helical blade.

### Claim 4

A displacement pile for being placed in a supporting medium, the pile comprising:
an elongated pile shaft;
extending from the elongated pile shaft, at least one lateral compaction protrusion which, upon rotating the elongated pile shaft, establishes a bore with a regular circumference in the supporting medium, the established bore having a diameter which is greater than the diameter of the elongated pile shaft;
a helical blade that moves the pile into the supporting medium; and
means for forming irregularities in the bore of regular circumference, the irregularities extending over a length of the bore, wherein the means for forming irregularities laterally extends from the at least one lateral compaction protrusion, the means for forming irregularities being elongated and wrapping about the shaft by at least forty-five degrees.

### Claim 5 (depends on 4)

The displacement pile as recited in claim 4, further comprising a helical auger for moving a solidifying substance relative to the bore.

### Claim 6 (depends on 5)

The displacement pile as recited in claim 5, in which the solidifying substance is grout.

### Claim 7 (depends on 5)

The displacement pile as recited in claim 5, in which the helical blade has a first handedness and the helical auger has an opposite second handedness.

### Claim 8 (depends on 5)

The displacement pile as recited in claim 5, wherein the helical auger and helical blade have the same first handedness.

### Claim 9 (depends on 4)

The displacement pile as recited in claim 4, wherein the means for forming irregularities creates a helical pattern in the bore of regular circumference.