Fire escape – ladder – or scaffold – Wall- or floor-attached – Independent rung or step
Patent
1975-11-11
1977-01-04
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Independent rung or step
B60R 300
Patent
active
040007880
ABSTRACT:
A portable step for climbing up and down elongated objects, such as trees and poles, is provided by a one-piece member formed to cooperate with a belt-type fastening means and is essentially T-shaped in cross-section with a horizontal leg portion constructed and arranged so that the step will not twist to the side when the user places his weight thereon.
REFERENCES:
patent: 3598201 (1971-08-01), Thurmond
Burgess John Alwyn
Schofield, III Zeb Douglas
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