Bridge

Details Bridge Bridge

1977-03-29

1978-03-28

Byers, Nile C.

Bridges

Transportable

52588, E01D 100

Patent

active

040806812

ABSTRACT:
A pedestrian bridge includes side, bottom and rail members formed of extruded aluminum box beams welded along edges to define a U-shaped bridge having lights in a longitudinal cavity in the rail members; a second embodiment is in the form of a close pipe of irregular hexagonal cross-section.

REFERENCES:
patent: 845897 (1907-03-01), Richardson
patent: 2336622 (1943-12-01), Le Tourneau
patent: 3066771 (1962-12-01), Wolchuk
patent: 3182343 (1965-05-01), Larson
patent: 3296759 (1967-01-01), Pavlecka
patent: 3385182 (1968-05-01), Harvey
patent: 3386221 (1968-06-01), Giovannucci
patent: 3423780 (1969-01-01), Alten
patent: 3517791 (1970-06-01), Miles
patent: 3706125 (1972-12-01), Hopkins
patent: 3984961 (1976-10-01), Chieger

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