Emergency tree and height descender

Details Emergency tree and height descender Emergency tree and height descender

1999-03-02

2000-05-16

Chin-Shue, Alvin

Fire escape, ladder, or scaffold

Torso harness

Strand-engaging, with descent retarder

182192, A62B 116

Patent

active

060623403

ABSTRACT:
A compact, lightweight, self-contained rappel apparatus by which a person such as a parachuting smoke jumper, aviator, or other person may safely descend a line or rope from a tree canopy or other high perch to the ground or a lower elevation. The invention is designed for one-handed use with a preferred figure 8 system of descent line reeving around and about the top pipe and bottom pipe of the descender that results in multiple frictional line-to-line contact points as the line crosses itself in each figure 8 wrap in the area between the top pipe and bottom pipe.

REFERENCES:
patent: 504868 (1893-09-01), Engelke
patent: 4311218 (1982-01-01), Steffen
patent: 4678059 (1987-07-01), Bowker
patent: 4702349 (1987-10-01), Lew
patent: 5145036 (1992-09-01), Omalia

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