Static structures (e.g. – buildings) – Tensioned or flexed sheet facing
Patent
1989-04-24
1990-02-13
Friedman, Carl D.
Static structures (e.g., buildings)
Tensioned or flexed sheet facing
174 48, E04G 548
Patent
active
048995061
ABSTRACT:
A floor construction includes a concrete floor having a main duct embedded in the concrete floor. The main duct has a bottom and a top, with the top being covered by the concrete floor. A service fitting includes a service box and an auxiliary duct means. The service box is located adjacent a side of the main duct and has a plan area and a capacity substantially equal to at least that plan area times a depth of the concrete floor above the bottom of the main duct. The auxiliary duct lays transversely across the top of the main duct and is attached thereto for providing a passage for wiring from the main duct to the service box. The main duct preferably is a multi-cell duct, and the auxiliary duct includes dividers dividing the auxiliary duct into passageways corresponding to the cells of the main duct. This construction provides for a greatly increased capacity for the service fitting in concrete floors of minimum depths.
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Exhibit A--brochure entitled "Mult-A-Cell II.RTM. Access Floor Delivery Module for Data-Communication-Power", dated 1985, of Midland-Ross Corp., Electrical Products Division, Pittsburgh, Pa.
Exhibit B--brochure of Midland-Ross Corp., Electrical Products Division, of Pittsburgh, Pennsylvania, entitled "Steel City.RTM.-Floor Boxes, Service Fittings, Poke-Thru".
Chapman Donald L.
Kimbrough Robert L.
Beavers Lucian Wayne
Friedman Carl D.
Square D Company
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