Fire escape – ladder – or scaffold – Ladder – Supporting surface compensating means
Patent
1987-11-13
1989-08-01
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder
Supporting surface compensating means
182111, E06C 744
Patent
active
048526894
ABSTRACT:
A leveling device for a ladder which includes a pair of rails, hollow rungs spanning the rails, and foot members pivotally attached to lower portions of the rails. A channel shaped leveling accessory slides on a first one of the rails. Spaced openings are provided in a web of the channel shaped accessory. A selected opening can be aligned with a selected rung. An elongated pin is received in the selected opening and extends through the hollow rung. At end portions of the pin member outboard of the rails and outboard of the channel shaped accessory, fasteners are mounted in the pin member to hold the channel shaped accessory in position. An accessory foot is pivotally mounted on the accessory below the first mentioned rail. The foot members are arranged to support the ladder in upright position.
REFERENCES:
patent: 809057 (1906-01-01), Hester
patent: 1246709 (1917-11-01), Brown
patent: 1609257 (1926-11-01), Lazear
patent: 1611057 (1926-12-01), Neil
patent: 3998293 (1976-12-01), Raia
patent: 4209078 (1980-06-01), Gerber
Machado Reinaldo P.
Pearce James W.
Schaeperklaus Roy F.
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