Patent ID: 8721226

Claim:
A helical pier rock tip for rotational insertion into soil/rock and anchoring a structure thereto, comprising: an elongated shaft having a longitudinal axis, a penetrating end, a trailing end, and a peripheral surface between the penetrating end towards the trailing end, the penetrating end including a first end surface that is obliquely inclined relative to the axis and intersects the peripheral surface of the shaft to define a penetrating edge of the shaft, a recess formed in the shaft extending from the first end surface toward the trailing end of the shaft, forming a recess wall and terminating in a second end surface that is obliquely inclined relative to the first end surface and the longitudinal axis, the recess wall intersecting the first end surface to define a lateral cutting edge oriented transversely to the penetrating edge, the recess receiving soil/rock loosened by the penetrating edge and the cutting edge, the second end surface directing loosened soil/rock out of the recess when the helical pier is rotated into the soil/rock, and a helically-shaped plate arranged about the shaft proximate to and spaced apart from the recess which is configured to spiral into the soil/rock and thereby advance the shaft and the helical plate into the soil/rock when the helical pier is rotated into the soil/rock.