Plenum and diffuser for heating, ventilating and air...

Details Plenum and diffuser for heating, ventilating and air... Plenum and diffuser for heating, ventilating and air...

2006-03-14

2006-03-14

Boles, Derek S. (Department: 3749)

Ventilation

Having inlet airway

Including specific air distributor

Reexamination Certificate

active

07011578

ABSTRACT:
A plenum and diffuser for use with an HVAC system for distributing air through an opening in a ceiling, the plenum having a large diameter bottom opening by which air is passed through an opening in the ceiling, and having an air inlet opening. A hanger bar extends through the plenum housing over the large diameter opening. A junction box is secured to the hanger bar for supporting a light fixture or ceiling fan. A diffuser is in the form of a planar, circular structure of thin, rigid material having a circumferential outer edge and a central opening dimensioned to accommodate a junction box. The diffuser has a plurality of radially extending fins and a radially extending air slot opening in conjunction with each fin.

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