Folding ladder

Details Folding ladder Folding ladder

1985-12-27

1987-04-07

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Wall- or floor-attached

Ladder

182160, E06C 912

Patent

active

046553193

ABSTRACT:
The invention concerns improvements to a folding ladder consisting of two angle section uprights arranged facing one another, of which the surfaces perpendicular to the plane of the ladder carry two longitudinal ribs provided with facing perforations, receiving pivots for articulating rungs to enable them to be folded. Three essential points are improved: holding the ladder to the wall, the electric release system for opening the ladder, the correct placement of the system of release of the ladder at the different vertical points from which the whole ladder can be directed manually or electrically to open.

REFERENCES:
patent: 314899 (1885-03-01), Wilson
patent: 350047 (1886-09-01), Dunn
patent: 3517770 (1970-06-01), Loix
patent: 4425983 (1984-01-01), Reinhard
patent: 4489807 (1984-12-01), Rodriguez

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