Patent ID: 6585489
Filing Date: 2003-07-01
Classification: F04D

Abstract:
In combination with an oscillating fan, which fan has a rear grill, a front grill attached to said rear grill, a fan motor external to said rear grill, to which the rear grill is mounted, a fan blade assembly attached to and driven by said fan motor, the improvement comprising,said front grill having a plurality of ribs, said ribs being connected to a circumferential ring, said circumferential ring having a panel to which said ribs are connected, said circumferential ring dimensions are determined by a fan blade assembly diameter D, which dimensions include a dimension A, which is a distance from the tips of the fan blades to an inside diameter of said circumferential ring, a dimension B which is a depth of the ring, and a dimension C which is a width of the ring, said dimensions being in the range of a is plus or minus 40% of D, B equals 0.60 to 4.5 inches and C equals 40 to 200% of B.