Transportable folding bridge

Details Transportable folding bridge Transportable folding bridge

1983-06-10

1985-08-13

Silverberg, Fred

Bridges

Truss

Details

14 24, 16223, 16242, 16348, 16366, 16371, E05D 704

Patent

active

045340790

ABSTRACT:
A folding bridge is provided with flush top and bottom chords when opened through 180.degree. by a hinge comprising two hinge blocks pivotally interconnected by a swinging link, the rotation of each block relative to the link being limited to 90.degree. by a stop mechanism and being sequenced by a restraining mechanism. In specific application to a bridge, the restraining mechanism is gravity urged.

REFERENCES:
patent: 534704 (1895-02-01), Worden
patent: 1310203 (1917-07-01), Meyrowitz
patent: 1771008 (1930-07-01), Reinhardt
patent: 2182704 (1939-12-01), Rea
patent: 2332404 (1943-10-01), Smith
patent: 4131378 (1978-12-01), Daws
patent: 4400994 (1981-12-01), Skjaeveland

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