FIGS. 1 is a perspective view of the fan with ribbed housing wherein the fan motor and blades are removed for showing the interior face of the fan housing;
FIG. 2 is a plan view of the interior face of the fan housing;
FIG. 3 is side view of the housing of FIG. 2, viewed from a bottom side thereof;
FIG. 4 is a side view of the housing of FIG. 2, viewed from a top side thereof;
FIG. 5 is a plan view of an exterior face of the fan housing, showing the face opposite to that of FIG. 2;
FIG. 6 is a side view of the housing of FIG. 2, viewed from a left side thereof;
FIG. 7 is a side view of the housing of FIG. 2, viewed from a right side thereof;
FIG. 8 is a perspective view of the same housing as shown in FIG. 1, with a first embodiment of the fan rotor/blade assembly placed on the hub;
FIG. 9 is a plan view analogous to FIG. 2, with the fan rotor/blade assembly placed on the hub;
FIG. 10 is a side view analogous to FIG. 3;
FIG. 11 is a side view analogous to FIG. 4;
FIG. 12 is a plan view analogous to FIG. 5, with the fan rotor/blade assembly placed on the hub;
FIG. 13 is a side view analogous to FIG. 6;
FIG. 14 is a side view analogous to FIG. 7;
FIG. 15 is a perspective view of the same housing as shown in FIG. 1, with a second embodiment of the fan rotor/blade assembly placed on the hub, the rotor being formed with an annular pattern of rectangular apertures;
FIG. 16 is a plan view analogous to FIG. 2, with the fan rotor/blade assembly placed on the hub;
FIG. 17 is a side view analogous to FIG. 3;
FIG. 18 is a side view analogous to FIG. 4;
FIG. 19 is a plan view analogous to FIG. 5, with the fan rotor/blade assembly placed on the hub;
FIG. 20 is a side view analogous to FIG. 6; and,
FIG. 21 is a side view analogous to FIG. 7.