Retractable roof for stadium structure

Static structures (e.g. – buildings) – With stadium or auditorium feature

Patent

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Details

52 64, E04B 134

Patent

active

049952030

ABSTRACT:
A structure is provided having two opposing nested pairs of outwardly convex roof arches mounted for rotation about a generally horizontal axis. Each pair of nested roof arches can be rotated about its axis from a lowered nested condition to a raised condition where the inner portion of one arch partially overlaps the other arch of the nested pair. In a preferred arrangemnt the arches extend between supports on diametrically opposing sides of a stadium building, which has an upper opening. The arches in their raised condition cover the stadium opening and in their lowered condition maintain the stadium substantially open to the elements. The turning moment exerted by the arches is sustained through struts by floats within liquid contained in caissons forming a foundation of the structure. The floats are shaped and guided to follow a path within the liquid as the associated arch rotates such as to substantially balance the turning moment of the latter as they move. A double acting hydraulic cylinder arrangement is connected to the arches at a distance from their horizontal axes to move them between their raised and lowered positions.

REFERENCES:
patent: 1572790 (1926-02-01), Grigsby
patent: 2728115 (1955-12-01), Cornelius
patent: 4833837 (1989-04-01), Bonneau

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