Multiple blade window fan

Ventilation – Means combined with window – With air pump

Patent

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Details

454208, F24F 7013

Patent

active

056649967

ABSTRACT:
A portable window fan including a housing having a bottom wall for mounting on a sill of a window with an open sash, a top wall for engaging the open sash, a rear wall defining a plurality of inlet openings, and a front wall defining three substantially aligned discharge openings spaced apart in a given direction substantially parallel to the top wall. Also included are three fan blades mounted within the housing, each fan blade arranged to produce air flow through a different one of the discharge openings; an electrical drive coupled to the fan blades and operative to induce rotation thereof; and a grill mechanism covering the discharge openings.

REFERENCES:
patent: 4773310 (1988-09-01), Corwin
patent: 5334091 (1994-08-01), Shih-Chin

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