Ladder leveling apparatus

Details Ladder leveling apparatus Ladder leveling apparatus

1997-07-14

1998-10-06

Chin-Shue, Alvin C.

Fire escape, ladder, or scaffold

Ladder

Supporting surface compensating means

E06C 744

Patent

active

058163646

ABSTRACT:
A ladder leveling apparatus 10 including a ladder member 20 having ladder legs 21 that are received in a ladder leg adapter unit 12 including boot members 30 wherein the position of the bottom of the ladder legs 21 relative to the boot members 30 are controlled by elongated adjustment rod members 40 having an enlarged head member 44 which is actuated proximate the upper portion of the ladder member 20.

REFERENCES:
patent: 1033685 (1912-07-01), Eskew
patent: 1560978 (1925-11-01), Crump
patent: 2331629 (1943-10-01), Reilly
patent: 2350116 (1944-05-01), Kimes
patent: 4744441 (1988-05-01), Sandstrom
patent: 4995474 (1991-02-01), Gauthier
patent: 5148892 (1992-09-01), Lu
patent: 5464071 (1995-11-01), Rice et al.

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