Patent ID: 6883233

Claim:
A manufacturing method for forming a fan guide having a guide body and a central frame located within the guide body, the method comprising the steps of: arbitrarily selecting a first point located outside the central frame; arbitrarily selecting a second point located inside the central frame but excluding a center point of the central frame; arbitrarily selecting a third point determined by an intersection of a first imaginary line and a second imaginary line, the intersection being located outside the central frame, the first imaginary line being selected from those imaginary lines that pass through the first point and that lie between two imaginary tangent lines that are tangent to an outer circumference of the central frame from the first point, and the second imaginary line being selected from those imaginary lines that pass through the second point; determining a first connecting frame to be formed along an imaginary line created from the second point to the first point, such that the first connection frame connects the central frame to the guide body; determining a second connecting frame to be formed along an imaginary line created from the third point and passing through the second point, such that the second connecting frame connects the central frame to the guide body; determining a third connecting frame to be formed along an imaginary line created from the first point and passing through the third point, such that the third connecting frame connects the central frame to the guide body; and forming the fan guide with said first, second and third connecting frames as determined.