Grout propeller for helical pile
AssigneeMagnum Piering, Inc.
InventorsHoward A. Perko, Bernard Brian Dwyer, Matthew Houliston
Life of this patent
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Abstract
Provided is a helical pile having an elongated shaft, at least one helical blade on the shaft having a leading edge and a trailing edge, and a displacement paddle extending outward from the shaft longitudinally positioned between the leading and trailing edges of the blade to push away soil to create a grout channel surrounding the shaft. At least one grout propeller may be provided on the shaft, having at least one blade pitched an opposite direction from the helical blade to propel grout downward in the grout channel as the pile rotates.
Claims16
In combination with a helical pile having an elongated shaft and a longitudinal axis, at least one helical blade on the shaft for rotatably cutting into soil as the shaft is rotated, the pitch of which determines the rate of axial advancement, and a displacement device extending outward from the shaft to create a grout channel surrounding the shaft, a grout propeller attachable to the shaft above the helical blade, comprising:
- A plurality of separate blades attached to the shaft at substantially the same longitudinal axial position with respect to the longitudinal axis, extending radially therefrom and pitched opposite of the helical blade to propel grout downward in the grout channel as the pile rotates.
Dependencies are inferred from the claim text.