Controlled expansion suspended ceiling grid member

Details Controlled expansion suspended ceiling grid member Controlled expansion suspended ceiling grid member

1975-11-24

1977-04-12

Faw, Jr., Price C.

Static structures (e.g., buildings)

Machine or implement

52DIG5, 52573, E04C 330, E04B 168

Patent

active

040167011

ABSTRACT:
A controlled expansion suspended ceiling grid member for suspended panel or tile ceilings comprises a web having a panel supporting flange provided along one of its marginal edges and a bead integral with the other marginal edge. The bead side walls are unconnected at the bead's base. An expansion accommodating portion is provided for accommodating thermal expansion in the beam and comprises three evenly spaced apart notches cut in the web in a manner which adapts the flange to fold downwardly away from the bead during beam expansion. The bead's top wall has slot means cut therein to essentially free the bead's side walls from transverse connection to adapt the side walls to buckle laterally out of their respective planes as the flange is folded so that the bead remains substantially horizontal and distortion along the beam's length is minimized.

REFERENCES:
patent: 3175655 (1965-03-01), Brown et al.
patent: 3189139 (1965-06-01), Znamirowski et al.
patent: 3221846 (1965-12-01), Brown et al.
patent: 3778947 (1973-12-01), Sauer
patent: 3807111 (1974-04-01), Brady
patent: 3846031 (1974-11-01), Adams

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