Fire escape – ladder – or scaffold – Ladder – Supporting surface compensating means
Patent
1978-12-19
1981-01-06
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder
Supporting surface compensating means
182111, E06C 744
Patent
active
042431220
ABSTRACT:
The present invention provides a base device for attachment to a ladder comprising a base, a top pivotally mounted on the base, ladder receiving means on the top of securably and releasably receiving the ladder therein, and adjustment means on the top for holding the top in a selected position relative to the base.
REFERENCES:
patent: 2960182 (1960-11-01), Swanson
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