Fire escape – ladder – or scaffold – Wall- or floor-attached – Independent rung or step
Patent
1997-10-06
1999-03-16
Stodola, Daniel P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Independent rung or step
182 90, E04G 300
Patent
active
058818375
ABSTRACT:
The device includes a step and a handle as separate units. The step is made of two steel rods welded together, and having a threaded screw at one end to be driven into a tree. The user detachably attaches the handle to the step, and by swinging the handle, thrusts or throws the step against the tree, starting the screw into the tree, and then turns the handle to drive the step entirely into fully secured position into the tree. The user then detaches the handle from the step and repeats the maneuver with additional steps.
REFERENCES:
patent: 5624007 (1997-04-01), Mahaffy
Gallagher Paul H.
Stodola Daniel P.
Thompson Hugh B.
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