Ladder safety indicator

Details Ladder safety indicator Ladder safety indicator

1985-02-05

1985-11-26

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

With indicator, signal or alarm

182111, 182129, E06C 700, E06C 534, E06C 536

Patent

active

045549940

ABSTRACT:
In order to indicate whether a straight or extension ladder is positioned safely for use, a first label is provided on the side rail of the ladder and includes a level for indicating when the ladder is properly angled and a second label and a cooperating pointer are provided at the foot of the ladder to indicate if the base of the ladder is at a safe angle relative to the support surface.

REFERENCES:
patent: 2845719 (1958-08-01), Thomiszer
patent: 3118234 (1964-01-01), Wilson
American Natl. Standard, A14.5-1981, pp. 61-79.

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