Ladder

Details Ladder Ladder

1977-02-18

1978-07-25

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

Collapsible ladder

182207, E06C 112

Patent

active

041024338

ABSTRACT:
An extension roof ladder is disclosed having conventional extension ladder sections for use at the side of a building and connected thereto a flexible roof ladder section having a plurality of shorter subsections for use on the near side of a roof and one relatively longer rigid subsection hinged to the top shorter subsection for use on the far side of the roof.

REFERENCES:
patent: 37470 (1863-01-01), Willis
patent: 1582793 (1926-04-01), Smith
patent: 2629532 (1953-02-01), Tupper
patent: 3213963 (1965-10-01), Vogt

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