Fire escape – ladder – or scaffold – Ladder – Supporting surface compensating means
Patent
1984-11-26
1986-08-26
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder
Supporting surface compensating means
2481888, E06C 744
Patent
active
046077260
ABSTRACT:
The present invention is a leveling device for removable attachment to a ladder. The device consists of a hollow sleeve member of substantially rectangular cross-section having a pair of side walls joined by a pair of end walls. Each end wall has a plurality of orifices therein such that each orifice on one end wall is paired with an axially aligned orifice on the other end wall. A pair of substantially L-shaped brackets are affixed to opposite ones of the end walls at opposite ends of the sleeve member. Each one of the L-shaped brackets has an arm member extending from a different one of the end walls and an ear member extending substantially perpendicular from the arm member. The ear members are inwardly opposed and spaced from the sleeve member by the arm members so as to receive a ladder rail therebetween. Each of the ear members has a U-shaped notch for receiving ladder rung therein. Spacing means are mounted upon the sleeve member for spacing a ladder rail apart from the sleeve member. An extension member is slidably mounted within the sleeve member. The extension member has a pair of sides each having a plurality of orifices therein such that each orifices on one side is paired with an axially aligned orifice on the other side. A retaining pin extends through a pair of end wall orifices and a pair of side wall orifices when axially therebetween so as to retain the extension member within the sleeve member and effectively extend the ladder rail length.
REFERENCES:
patent: 1393536 (1921-10-01), Hunt
patent: 1508392 (1924-09-01), Heun
patent: 2680554 (1954-06-01), Dakin
patent: 2783928 (1957-03-01), Cox
patent: 3165170 (1965-01-01), Blaney
patent: 3394774 (1968-07-01), Lanier
patent: 3414082 (1968-12-01), Gilland
patent: 3474883 (1969-10-01), Weis
patent: 3559939 (1971-02-01), Luna
patent: 3568801 (1971-03-01), Werner
patent: 4236603 (1980-12-01), Talley
patent: 4423797 (1984-01-01), Batten
Davis Richard J.
Skandunas Vince J.
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