Trap door and folding ladder arrangement

Details Trap door and folding ladder arrangement Trap door and folding ladder arrangement

1977-01-21

1978-02-28

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Door and ladder

Door operates ladder

182157, E06C 914

Patent

active

040761029

ABSTRACT:
A trap door and folding ladder arrangement, suitable for use as a fire escape for multi-storey buildings, comprises a folding ladder which can be stored and locked in a folded position in a casing. A cover is connected to the ladder and the casing by two systems of levers and connecting rods arranged to automatically open the cover when the ladder is unlocked and unfolds by its own weight.

REFERENCES:
patent: 876354 (1908-01-01), Houghton
patent: 877363 (1908-01-01), Nielsen
patent: 3025925 (1962-03-01), Pook

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