Fire escape – ladder – or scaffold – Ladder – Supporting surface compensating means
Patent
1978-07-20
1979-03-13
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder
Supporting surface compensating means
E06C 744
Patent
active
041437420
ABSTRACT:
A ladder extension device for enabling a ladder to stand upright upon uneven or inclined surfaces is disclosed which is composed of a pair of diametrically opposed side members, preferably L-shaped, connected by hinges and secured about a ladder leg by bolts or other means.
REFERENCES:
patent: 2567989 (1951-09-01), Cheek
patent: 3089563 (1963-05-01), Trumpolt
patent: 3937298 (1976-02-01), Hurwitz
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