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.

Abstract: A portable electric fan including a housing adapted for substantially covering a window opening, an enclosure movably mounted on the housing and defining an intake opening and a discharge opening, an enclosure drive coupled to the enclosure and operable to produce movement thereof on the housing, a movable blade mechanism retained in the enclosure and operable to produce air flow between the intake and discharge openings and a blade drive coupled to the blade mechanism and operable to produce movement thereof.

Abstract: A portable fan including an air director housing for mounting between a sill and sash of an open window and having oppositely directed first and second open ends, spaced apart top and bottom walls extending between the first and second open ends, and spaced apart side walls joined to the top and bottom walls and extending between the first and second open ends; the side, top and bottom walls defining an air flow passage between said first and second open ends. Also included is a blower housing joined to the first open end of the air director housing and defining first and second openings for accommodating air flow; the blower housing projecting from the air director housing for a substantial first horizontally directed distance d and for a substantial second vertically directed distance D. A motor driven blower is retained in the blower housing and produces air flow between the first and second openings through the air flow passage.

Abstract: A portable electric fan including a plurality of posts connectable to form an elongated pole having first and second ends; a pedestal attached to the first end of the pole and adapted to provide support thereof on a base surface; and a clamp attached to the second end of the pole and adapted for clamping engagement with an upper surface spaced from the base surface. Also included is an adjustment mechanism for adjusting the length of the pole and a blower retained by the pole.