Under-bridge access assembly

Details Under-bridge access assembly Under-bridge access assembly

1985-03-14

1987-01-06

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Having transpositioning base and erecting means

182143, B66F 1104

Patent

active

046339752

ABSTRACT:
Apparatus and method for providing access to the underside of a bridge deck. A tower is supported vertically beside a bridge deck by means of a launch frame mounted on a stabilized support pillar; the tower in turn supporting a platform horizontally beneath the bridge-deck by means of a centilever frame. The apparatus is made quickly deployable by providing that the tower is engageable with the launch frame so as to allow it to be launched over the parapet of the bridge-deck while being supported in a substantially horizontal position with the platform supported substantially vertically to the tower, and to be rotatable into a substantially vertical portion adjacent the bridge deck to bring the platform into position underneath the bridge-deck. Access is gained to the underside of the bridge deck by climbing down the tower and onto and along the platform.

REFERENCES:
patent: 2598730 (1952-06-01), Thompson
patent: 3145801 (1964-08-01), Callahan
patent: 3197178 (1965-07-01), Nietz
patent: 3608669 (1971-09-01), Lindsay
patent: 3900080 (1975-08-01), Rea
patent: 3995250 (1976-11-01), Ferree
patent: 4044858 (1977-08-01), Vikre
patent: 4154318 (1979-05-01), Malleone

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