F - Mech Eng,Light,Heat,Weapons – 21 – V
Patent
F - Mech Eng,Light,Heat,Weapons
21
V
240/135
F21V 33/00 (2006.01) F24F 13/072 (2006.01) F24F 13/078 (2006.01)
Patent
CA 1048980
ABSTRACT OF THE DISCLOSURE A multipurpose, recessed luminaire capable of utili- zation in air handling applications is provided having a sim- plified air blade construction. The particular construction utilized in the air blade design is responsible for the ability of the luminaire to exhibit a multipurpose capacity. The luminaire or light fixture includes a body defining a lamp housing. The body has a peripheral lip about it, the lip defining a cavity along at least two opposed sides of the body. m e cavity is the primary air path when the luminaire is used in air transfer applications. The air blade is mounted along the peripheral lip and is adjustable between positions which block air flow, provide horizontal air distribution, or provide vertical air distribution, horizontal and vertical distribu- tion referring to the general direction of air flow travel after exiting the cavity. The air blade includes a first wall, a second wall initially generally perpendicular to the first wall, and a third wall meeting the first wall at a predetermined angle. In the preferred embodiment, both the first and third walls have relief means formed in them so that these walls may be folded against one another and against the second wall to give the luminaire its multipurpose capabilities. The third wall is designed to function as a positive blade stop in the horizontal air distribution position of the air blade.
252879
Stahlhut Leo G.
Trantina Walter J.
Emerson Electric Co.
Na
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