Modular ceiling framework

Static structures (e.g. – buildings) – Facer held by stiffener-type frame – Self-supporting section attached to nonload bearing framing

Patent

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Details

52484, C04B 552

Patent

active

040219860

ABSTRACT:
A modular framework for a drop ceiling constructed from sheet steel strips in which individual frame members are rolled from a single strip into a cross-sectional shape including a hollow rectangular bulb portion, a flat web portion formed from two thicknesses of the sheet metal strip extending from the center of one wall of the rectangular portion, and a pair of L-shaped portions having one leg of each L-shaped portion lying in a common plane transverse to the web portion and joined respectively to the two thicknesses of the web portion, with the other leg of each L-shaped portion extending parallel to the web and projecting away from the bulb portion. Ends of the web portion have tabs which stab into openings of the web portion of another frame member to form a T connection between cross-members.

REFERENCES:
patent: 2910738 (1959-11-01), McCorkell
patent: 3084401 (1963-04-01), Findlay
patent: 3138229 (1964-06-01), Hubbard
patent: 3388519 (1968-06-01), Downing
patent: 3583119 (1971-06-01), Kann
patent: 3708932 (1973-01-01), Bailey
patent: 3835614 (1974-09-01), Downing
patent: 3846031 (1974-11-01), Adams
patent: 3890753 (1975-06-01), Johansen
patent: 3890760 (1975-06-01), Jones

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