| 摘要 |
The present invention is an anchor formed by combining a pyramid with a shaft and an eye. The pyramid has a base and an apex displaced from the base by an apex separation distance D and projecting onto a central region of the base. The shaft, having a shaft length L, is mounted substantially normal to the base of the pyramid with a first shaft end attached to the base of the pyramid and substantially centered thereon. It is preferred that the shaft length L be less than or about equal to the apex separation distance D. The eye is formed on the second shaft end of the shaft. Preferably, the pyramid is four-sided and has a substantially square base with edges having a nominal edge length l. It is further preferred for the apex separation distance D to be about +E,fra 1/2+EE of the edge length l.
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