Ladder leveler

Details Ladder leveler Ladder leveler

1992-02-19

1993-12-28

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Ladder

Supporting surface compensating means

2481883, E06C 744

Patent

active

052731332

ABSTRACT:
A ladder leveler attachment formed of two preassembled leg assemblies, each having protruding bolts for direct and easy attachment to the ladder side rails, and a drive rod slidably engaging both assemblies. Each assembly has an elongated housing and an elongated, slidably interfitting base plate, the two components forming pockets for retaining protruding attachment bolts. Inside each housing is a gear, and a gear rack having closed ends forming gear stops. Swivel feet are detachably secured to hoop feet, being shiftable from a lowered, generally horizontal position to a vertical, edge-engaging position alongside the leg housing.

REFERENCES:
patent: 2458076 (1948-01-01), Houston
patent: 2894670 (1959-07-01), Anderson
patent: 2936849 (1960-05-01), Carson
patent: 3027969 (1962-04-01), Erickson
patent: 3233702 (1966-02-01), Feltrop
patent: 4128139 (1978-12-01), Cook, Sr.
patent: 4627516 (1986-12-01), Studer

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