Patent ID: 8585362

Claim:
A fan housing comprising: a plastic casing including a skirt-board and a lateral wall, with the skirt-board including inner and outer peripheries spaced in a radial direction while the plastic casing further includes a first coupling portion formed along the inner periphery of the skirt-board, with the lateral wall extending from a face of the skirt-board along the outer periphery of the skirt-board in an axial direction perpendicular to the radial direction; and a metal frame including a shaft coupling member and a second coupling portion, with the second coupling portion of the metal frame coupled to the first coupling portion of the plastic casing, with the metal frame including a disc having an outer periphery, with the metal frame further including a plurality of ribs extending outward from the outer periphery of the disc and each terminating in a distal end, with the shaft coupling member formed at a center of the disc, with the disc and the plurality of ribs defining a plane, with the second coupling portion formed on a distal end of each of the plurality of ribs and comprising a plurality of teeth, and with one of the plurality of teeth extending in an inclined manner from the plane in a first direction perpendicular to the plane and with another one of the plurality of teeth inclined from the plane opposite to the first direction.