Lightweight ladder

Details Lightweight ladder Lightweight ladder

1982-01-25

1983-06-21

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Single stile, strand or pole

182 93, 182100, 182 92, 182206, E06C 136, E06C 106

Patent

active

043889832

ABSTRACT:
A lightweight ladder includes a vertical member of flat sided tubing, rungs formed of angle metal, and ladder feet adapted to engage retaining clips mounted on a vertical structure. The ladder feed are designed to provide wedging between the clips and the vertical structure such that set screws are not required to keep the ladder in place and stable.

REFERENCES:
patent: 1709144 (1929-04-01), Mueller
patent: 2194870 (1940-03-01), Pirsch
patent: 2924291 (1960-02-01), Tunstead
patent: 3094811 (1963-06-01), Feezel
patent: 3149696 (1964-09-01), Anderson
patent: 3388884 (1968-06-01), Eggler
patent: 3869742 (1975-03-01), Gale
patent: 3930562 (1976-01-01), Zorn
patent: 3995714 (1976-12-01), Brookes
patent: 4069892 (1978-01-01), Lynne

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