Temporary, modular, self-erecting bridge

Details Temporary, modular, self-erecting bridge Temporary, modular, self-erecting bridge

1974-12-13

1977-04-19

Byers, Nile C.

Bridges

Transportable

52646, 182152, 14 5, E01D 1512

Patent

active

040179320

ABSTRACT:
A temporary, modular, self-erecting bridge which can be transported from place-to-place by collapsing the side, top and bottom elements about pivot points to achieve a narrow and shorter unit. Hydraulic jacks or other fluid actuated mechanisms are used to expand and contract the elements.

REFERENCES:
patent: 414843 (1889-11-01), Olsen
patent: 509781 (1893-11-01), Weiss
patent: 919100 (1909-04-01), Wedmore
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patent: 1176994 (1916-03-01), Spelling
patent: 1376990 (1921-05-01), Zabriskie
patent: 2365175 (1944-12-01), Crawford
patent: 2459800 (1949-01-01), Esgate
patent: 3315421 (1967-04-01), Roy
patent: 3354596 (1967-11-01), Schafer
patent: 3394419 (1968-07-01), Sedlacek
patent: 3729877 (1973-05-01), Hall
patent: 3782674 (1974-01-01), Smith
patent: 3783573 (1974-01-01), Vaughan

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