Adjustable ladder leveling device

Details Adjustable ladder leveling device Adjustable ladder leveling device

1978-07-31

1980-06-24

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder

Supporting surface compensating means

182204, E06C 744

Patent

active

042090784

ABSTRACT:
A device attachable to the leg of a ladder to lengthen a leg that is too short to reach the uneven level of a supporting surface comprising a sleeve member clamped below the last and next-to-last rung of the ladder; an extension vertically adjustable in the sleeve; a threaded rod having a stop at its lower end abutting the top of the extension and a handle at its upper end for vertically displacing the extension; the lower end of the extension having pivoted thereon a plate with a skid-proof bottom.

REFERENCES:
patent: 666948 (1901-01-01), Weiss
patent: 1272551 (1918-07-01), Smith
patent: 1462505 (1923-07-01), Hunt
patent: 2213471 (1940-09-01), Minnick
patent: 2517771 (1950-08-01), DeStefano
patent: 3165170 (1965-01-01), Blaney
patent: 3282376 (1966-11-01), Merriman
patent: 4069893 (1978-01-01), Blackstone

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