Static structures (e.g. – buildings) – Including component designed to receive a disparate article... – Artificial illumination means
Patent
1975-12-05
1977-01-11
Murtagh, John E.
Static structures (e.g., buildings)
Including component designed to receive a disparate article...
Artificial illumination means
52488, E04B 562
Patent
active
040019853
ABSTRACT:
A suspended ceiling is provided having a main grid assembly defining the lower plane of the suspended ceiling and having trusses connected to the grid assembly. A support frame is positioned above the lower main grid assembly defines the upper ceiling plane. Outrigger arms pivotally attached to the ceiling support frame are used to suspend the support frame from the trusses on the main grid assembly and to position the support frame relative to the main grid assembly. A ceiling board is mounted within the support frame and a plurality of ceiling boards are carried by the combination of the main grid assembly and the support frame.
REFERENCES:
patent: 3581448 (1971-06-01), Roux
patent: 3848385 (1974-11-01), Thompson
Nikolaus Harold W.
Wasson Kenneth L.
Armstrong Cork Company
Murtagh John E.
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