Safety ladder with caster assembly moveable positively to a retr

Details Safety ladder with caster assembly moveable positively to a retr Safety ladder with caster assembly moveable positively to a retr

1976-07-06

1977-12-20

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Horizontal traversing - actuation, control, or response

Holding means

182106, 182127, E06C 1397, E06C 500

Patent

active

040636160

ABSTRACT:
A safety ladder assembly having a plurality of steps and at least three support feet for supporting the ladder on a horizontal surface. A caster assembly having at least three casters for providing for rollingly transporting the ladder from one location to another. The casters are positively and conjointly moveable between a retracted storage position in which the support feet stably support the ladder on a horizontal surface and a second transporting position in which the casters stably support the ladder assembly on the horizontal surface with the support feet elevated thereabove so that the ladder assembly may be rollingly transported along the surface. A linkage interconnects the casters so that they may be raised and lowered via actuating and retracting pedals.

REFERENCES:
patent: 2624590 (1947-11-01), Tilton
patent: 2923373 (1960-02-01), Ledgerwood

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