Static structures (e.g. – buildings) – Machine or implement
Patent
1987-12-21
1989-04-04
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Machine or implement
156291, 1563073, 52729, 52232, E04C 332
Patent
active
048173576
ABSTRACT:
A grid tee for suspension ceilings is disclosed which includes a metal strip bent to provide a stiffening bulb along one edge, a pair of parallel web portions extending from the bulb in face-to-face adjacency, and a flange portion extending laterally in opposite directions from the side of the web remote from the bulb. A second elongated piece of sheet metal forming a cap is positioned against the side of the flange remote from the bulb and is connected to the flange along the edges thereof by a reverse bend. A band of cross-link cured adhesive is located at the interface between the flange and the cap, bonding the two together. The adhesive effectively closes the section and provides torsional stiffness to the grid tee.
REFERENCES:
patent: 2304718 (1942-12-01), Swart
patent: 3730798 (1973-05-01), Franz
patent: 4206578 (1980-06-01), Mieyal
patent: 4554718 (1985-11-01), Ollinger et al.
patent: 4713919 (1987-11-01), Platt
Donn Incorporated
Ridgill, Jr. James L.
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