Foldable ladder

Details Foldable ladder Foldable ladder

1987-12-10

1989-06-27

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

Collapsible ladder

182 96, 182228, E06C 1383

Patent

active

048420999

ABSTRACT:
A foldable ladder has collapsible crosspieces having a 90-degree pivot in the middle, the crosspieces being mounted to opposite side rails likewise having 90-degree pivots. Push rails are provided to the right and left of the crosspiece inside each sidepiece so as to move the ladder between folded and depolyed positions.

REFERENCES:
patent: 610284 (1898-09-01), Schubert
patent: 958732 (1910-05-01), Dennis
patent: 2670120 (1954-02-01), Sanguineti
patent: 2981364 (1961-04-01), Webber
patent: 3084760 (1963-04-01), Lamberti
patent: 4560030 (1985-12-01), Mucelli
patent: 4618027 (1986-10-01), Piretti

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