Integral air intake apparatus

Details Integral air intake apparatus Integral air intake apparatus

1991-04-25

1993-04-13

Joyce, Harold

Ventilation

Having inlet airway

Including backdraft preventer

1375278, F24F 1310

Patent

active

052016854

ABSTRACT:
An integrally formed air intake apparatus for regulating air flow into a structure such as a barn. The air intake apparatus includes an elongate convex valve seat to minimize contact between the valve seat and its valve and to permit smooth air flow over the rounded valve seat. The apparatus further includes a duct-receiving groove for easily mounting a duct which directs outside air into the valve and a shoulder extending about the duct-receiving groove for bearing against an inner portion of the structure. The housing is molded from one-piece such that the valve seat, duct-receiving groove, and shoulder are integrally formed.

REFERENCES:
patent: 2877790 (1959-03-01), Wilhelm et al.
patent: 3511163 (1970-05-01), Newell et al
patent: 4210070 (1980-07-01), Tatum et al.
patent: 4494449 (1985-01-01), McCabe
patent: 4811656 (1989-03-01), Meendering
patent: 4850265 (1989-07-01), Raisanen

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