Abstract: An electric fan including a casing having an air supply opening at a front part and an air suction opening at a rear part and an air passage in the casing from the air suction opening to the air supply opening; fan blades placed in the air passage or near the air suction opening as an inlet to provide air flow in the air passage from the air suction opening to the air supply opening; a first motor for rotating the fan blades; a circular air directing grille having many slits to cover the front part of the air supply opening of the casing in gyratory manner; a driving roll made of an elastic material placed on the peripheral part of air directing grille to contact the driving roll with the peripheral part of the grille with a spring force; a second motor for driving the driving roll to turn the air directing grille and the air directing grille can be rotated in stable condition under contacting of the driving roll with the peripheral surface of the air directing grille with the spring force if desired.

Abstract: The disclosed fan motor includes a bracket encircling a stator and reduction gears of the conventional structure disposed within a gear box. The bracket is formed of sheet metal to include various holes while the gear box is moulded with an electrically insulating synthetic resinous material to be integral with the bracket by filling the holes with the resinous material upon moulding the gear box. Also the gears include respective shaft directly journaled by their bearings moulded with the resinous material.

Abstract: A first movable mold with both a runner and a core type mold is moved toward a stationary mold, and simultaneously a second movable mold supporting a motor bracket of plate metal is moved toward the stationary and first movable mold until all the molds engage one other to form around the core type mold a predetermined space to which the bracket is exposed a molten resin is poured into the space through the runner to mold a gear box integral with the bracket.