Foldable ladder

Details Foldable ladder Foldable ladder

1975-03-13

1977-04-12

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Convertible

Ladder

182160, 182161, 182162, E06C 1383

Patent

active

040169545

ABSTRACT:
A foldable ladder is disclosed having a central and two outer parallel support members or "stiles" and a plurality of steps connected between the central and the outer stiles. Each step is arranged to fold between an erected position, in which it extends generally at right angles to the longitudinal direction of the stile to which it is connected, and a storage position in which the step lies generally parallel to the central stile with the outer stile to which it is connected extending parallel to and in close juxtaposition with the central stile. Engaging means are provided adjacent the upper end of the central stile for holding cooperating engaging means of a supporting membersuch as another ladder section (forming an extension ladder) or a prop extending to ground (forming a step ladder).

REFERENCES:
patent: 19107 (1858-01-01), Stone
patent: 210018 (1878-11-01), Doty
patent: 227312 (1880-05-01), Sippy
patent: 950182 (1910-02-01), Mercer
patent: 958732 (1910-05-01), Dennis
patent: 1500891 (1924-07-01), Quehl
patent: 2981364 (1961-04-01), Webber
patent: 3026962 (1962-03-01), Kramer
patent: 3084760 (1963-04-01), Lamberti
patent: 3729063 (1973-04-01), Hein

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