| 摘要 |
Prior apparatus for anchoring a person working within an enclosed chamber such as a manhole (10) is relatively bulky. Herein, a member (18) sits upon a periphery (14) of an overhead opening (18) to the chamber (10). A support structure (26) is attached to the member (18). An anchoring structure (32) serves for normally preventing a line (17) which is attached to a person in the chamber (10) from playing out downwardly into the chamber (10) and for allowing the line (17) to be freely drawn upwardly out of the chamber (10) with the person attached thereto. The anchoring structure (32) is mounted to the member (18). The overall apparatus (16) is relatively small and light in weight, can be used on sloped ground and allows maximal use of a rescuer's leg muscles in drawing a person out of the manhole (10).
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