Foldable ladder

Details Foldable ladder Foldable ladder

1976-04-28

1980-11-04

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

Collapsible ladder

182 70, 182196, 182206, E06C 136, E06C 1383

Patent

active

042314496

ABSTRACT:
A foldable ladder having a plurality of rigid steps and of rigid links which steps and links are pivotally secured together with pivot pins to result in a rigid ladder in use, but capable of being folded for storage.

REFERENCES:
patent: 266183 (1882-10-01), Moore
patent: 285569 (1883-09-01), Castle
patent: 320114 (1885-06-01), Bormann
patent: 899552 (1908-09-01), McArthur
patent: 1004883 (1911-10-01), Knollenberg
patent: 2849257 (1958-08-01), Woyton
patent: 3077241 (1963-02-01), Klages
patent: 3344886 (1967-10-01), Boscarino
patent: 3487889 (1970-01-01), Horowitz
patent: 3757896 (1973-09-01), Lee

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