Double-hinge corner for a concrete forming structure

Details Double-hinge corner for a concrete forming structure Double-hinge corner for a concrete forming structure

1982-05-13

1983-12-06

Czaja, Donald E.

Static molds

In situ construction engineering type or building type-mold...

Forming hydraulic and earth control type product in situ

249171, E21D 1000

Patent

active

044188846

ABSTRACT:
A concrete forming structure for culverts, tunnels, elevator shafts and the like, having side panels and chamfered corners. Novel two-way hinge assemblies are provided adjacent the chamfered corners and comprise two hinges and an angle iron disposed therebetween. The hinges are attached to confronting marginal faces of side panel sections and corner panel sections. Means are provided for holding the panel sections in a predetermined position to facilitate the pouring of the concrete and with the means being releasable. The panel sections and hinges are cooperable to allow the panel section to collapse and move after release of the means for allowing the panel section to be readily disengaged from the thus formed poured concrete. The hinges are lockable in a forming configuration.

REFERENCES:
patent: 3357673 (1967-12-01), Williams
patent: 3696177 (1972-10-01), Holland
patent: 4055321 (1977-10-01), Schimmel
patent: 4210306 (1980-07-01), Schimmel

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