Tree steps

Details Tree steps Tree steps

1982-09-29

1983-12-27

Machado, R. P.

Fire escape, ladder, or scaffold

Wall- or floor-attached

Independent rung or step

182187, A63B 2904

Patent

active

044225270

ABSTRACT:
A lightweight ecologically oriented shell-like device comprising, with a strap, portably useable tree climbing steps in which the application of stresses in climbing seat the steps firmly and without digging into or displacing the bark and wood of trees and similar vertical cylindrical structures. These devices are useful for hunters, for woodsmen, for utility pole climbing, and the like.

REFERENCES:
patent: 471626 (1892-03-01), Streeter
patent: 480941 (1892-08-01), Stow
patent: 907483 (1908-12-01), Ette
patent: 2209875 (1940-07-01), Eichelsdoerper
patent: 2392538 (1946-01-01), Knudsen
patent: 2908470 (1959-10-01), Garman
patent: 3957237 (1976-05-01), Campbell
patent: 4109761 (1978-08-01), Matlock
patent: 4230203 (1980-10-01), Sweat

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