DRILL TIP FOR FOUNDATION PILE

摘要

An improved drill tip 110 for a foundation pile includes a soil penetrating body 112 depending from a pile attachment structure 114, the soil penetrating body having a plurality of circular stepped flights 116 formed in the shape of a descending continuous conic spiral and having a continuous spiral-shaped lower face 120 and a spiraling outer face 122, a spiral flight 124 extending radially from the lower end 126 of the outer face 122 in linear alignment with the lower face 120, and an upper flight 128 extending radially from the pile attachment structure.

主权项

1. A drill tip for a foundation pile comprising:
a plurality of circular stepped flights formed generally in the shape of a descending continuous conic spiral organized around a center axis, said plurality of flights having a continuous spiral-shaped lower face and a continuous outer face intersecting said lower face, said outer face having a lower edge, a continuous spiral flight extending radially outwardly from said lower edge.