Heat-retarding air distribution unit

Details Heat-retarding air distribution unit Heat-retarding air distribution unit

1981-01-28

1983-04-19

Makay, Albert J.

F24F 1308

Patent

active

043801889

ABSTRACT:
An air distribution unit for mounting in the ceiling of a room comprises a downwardly opening sheet metal box having a horizontal top wall and depending side walls. Conditioned air is introduced into the box through an inlet opening in the top wall and is diffused by a grille in the lower end of the box. A normally open damper automatically closes the inlet opening in the event of fire. The upper side of the top wall and the outer sides of the side walls are lined with panels of fire-resistant sheet rock which retards the transmission of heat through the box if a fire occurs.

REFERENCES:
patent: 3522724 (1970-08-01), Knab
patent: 3785272 (1974-01-01), McNabney et al.
patent: 4146048 (1979-03-01), McCabe
patent: 4261501 (1981-04-01), Watkins et al.
patent: 4280536 (1981-07-01), Gnant
Barber-Colman Company--condensed catalog "Air Distribution Products" AIA File No. 30-J.

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