Portable escape ladder

Details Portable escape ladder Portable escape ladder

1977-12-30

1979-03-13

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder

Flexible

182206, E06C 136, E06C 156

Patent

active

041437411

ABSTRACT:
A portable escape ladder comprises a bracket for gripping over a building window ledge, a pair of chains suspended from the bracket and supporting a series of spaced transverse rungs therebetween and optional stand-off devices attached at least to some of the rungs to hold the ladder a fixed distance from the building wall. There is provided a form of connection between the rungs and the chains in which the ends of the rungs are pressed flat and formed with an opening in which the junction of a pair of chain links is captively held. The optional stand-off devices comprise substantially flat frames with upright extensions fitting in bores formed in the respective rungs and fastened in place by snap nuts on the ends of the uprights.

REFERENCES:
patent: 588389 (1897-08-01), Boemmel
patent: 1098391 (1914-06-01), McArthur
patent: 1994408 (1935-03-01), Pierre
patent: 2304955 (1942-12-01), Pierre
patent: 3727724 (1973-04-01), Gilbert
patent: 3834492 (1974-09-01), Ronk

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