| 摘要 |
A tree step includes a means for driving an anchor screw into a tree and then removing the step from the anchor screw. The step comprises an L-shaped bracket having a horizontal foot support section and a vertical screw engaging section associated therewith. An outwardly facing channel having a square cross-sectional profile is incorporated into the vertical screw driving section. The square head of the screw is slipped into the open end of the channel which is located near the intersection of the horizontal and vertical sections and then advanced to the closed end of the channel. Rotation of the horizontal foot support section causes the screw to advance into the tree. Once the screw has advanced as far as posible, the step may then be used to support human weight. After use, the step can be slipped off of the anchor screw thereby leaving it in the tree for subsequent reuse. Alternatively, the step can be rotated in the reverse direction thereby backing the screw out so that it can be used on another tree.
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