| 摘要 |
An earth anchor for embedding within the ground and incorporating a helical blade(s), having flattened side edges, intervened by rounded or arcuate corners, and connecting with its shank for securement with any driving apparatus useful for the power driving of such an earth anchor into the ground; while the shaped blade of this anchor incorporates a lineal cutting edge, and an arcuate cutting edge, that integrally blends into a segment of the lineal side edge of the blade, and which composite edges function as a compound cutting edge for driving of the earth anchor into the soil, and through the exertion of only a reduced force.
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