Stepladders

Details Stepladders Stepladders

1979-01-29

1982-01-19

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder

With hook or grab

182 93, 182107, E06C 136

Patent

active

043112099

ABSTRACT:
A step-ladder is provided with one or more hooks on one or both of the ladder's stanchions, with the hooks adapted to engage with corresponding horizontal, standing, or inclined members carried by a fixed structure. The hooks, which may also be telescopic, are vertically and perpendicularly displaceable with respect to the normal position of the step-ladder and each hook is independent from the other in order to permit their regulation or adjustment in height and direction of orientation.

REFERENCES:
patent: 659814 (1900-10-01), Frizell
patent: 774009 (1904-11-01), Wandel
patent: 843989 (1907-02-01), Bauer
patent: 2088895 (1937-08-01), Connell
patent: 2815160 (1957-12-01), Gilmour
patent: 3476211 (1969-11-01), Cormier
patent: 3590951 (1971-07-01), Berger
patent: 3603431 (1971-09-01), Nameche
patent: 3712419 (1973-01-01), O'Hara

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