Whole house attic fan

Patent

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Details

98116, F24F 706

Patent

active

045011940

ABSTRACT:
A whole house attic ventilating fan is disclosed which is installable within an opening in the ceiling of the house from below. A plenum box is installable against the attic-side of the ceiling sheathing in register with the opening with the plenum box having a venturi opening therein. A venturi is secured to the top of the plenum box and a fan motor and fan assembly is mounted within the venturi, the fan assembly being secured to a pair of joists by means of arms extending outwardly through openings in the venturi. The plenum box may fit between adjacent joists or may accommodate one or more joists if these joists extend across the opening in the ceiling. A method of installing the fan within the ceiling from below without the necessity of access to the attic crawl space is also disclosed.

REFERENCES:
patent: 369200 (1887-08-01), Merz
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patent: 4271751 (1981-06-01), Timmons
patent: 4336749 (1982-06-01), Barnhart et al.
patent: 4385550 (1983-05-01), Steiner et al.
patent: 4406216 (1983-09-01), Hott et al.

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