Drop ceiling framework

Details Drop ceiling framework Drop ceiling framework

1983-10-11

1985-09-24

Bell, J. Karl

Static structures (e.g., buildings)

Machine or implement

52484, 52668, E04B 552, E04C 330

Patent

active

045426155

ABSTRACT:
A drop ceiling framework constructed of rolled sheet metal in which a longitudinal T-frame member has a web section formed of two sheet metal layers joined along a longitudinal edge, a channel section formed along the lower edge of the web section, and a pair of flange sections projecting outwardly in a common plane from the open end of the channel section. The flange sections are formed of two layers of sheet metal joined along the outer edge of the flange section. The outer layer of each flange section is notched, exposing the under layer at each position of intersection with cross members of the drop ceiling. The notches are aligned with the channel sections of the cross members to form an extension of the reveal formed by the channel portions of the cross members.

REFERENCES:
patent: 3159252 (1964-12-01), Cotts
patent: 3832816 (1974-09-01), Jahn
patent: 4034531 (1977-07-01), Balinski
patent: 4206578 (1980-06-01), Mieyal
patent: 4434599 (1984-03-01), McCall

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