Portable bridge structure

Details Portable bridge structure Portable bridge structure

1976-04-12

1977-01-25

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder and platform

Platform with ladder as support

182 1, 182152, E04G 130

Patent

active

040046524

ABSTRACT:
A portable bridge structure includes a pair of releasably connectable stair and platform assemblies which form opposite ends of the bridge structure. Each assembly includes several components which are movable between folded and erected positions. When all the components are in their folded positions, each assembly forms a flat, compact bundle to facilitate transport and storage of the bridge structure. The components of each assembly include pivotally interconnected stair and platform sections and bracing means for retaining the sections in erected positions at selected angles of relative inclination. In preferred practice, each assembly also includes foldable stabilizer and railing structures carried respectively on the stair and platform sections.

REFERENCES:
patent: 215234 (1879-05-01), Mikeal
patent: 678695 (1901-07-01), Schoenhut
patent: 679003 (1901-07-01), McRay
patent: 925598 (1909-06-01), Rentfrow
patent: 1115803 (1914-11-01), Gallagher
patent: 3250344 (1966-05-01), Romano
patent: 3709323 (1973-01-01), Trible

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