Methods and apparatus for balancing ceiling fan blades to improve their aerodynamic performance

摘要

Method and apparatus for use in balancing the blades of ceiling fans, wherein the pitch angles of the blades and the dihedral angles of the blades are measured and corrected, if necessary, by use of a beam of light reflected from a mirror temporarily flushly affixed to each blade, and wherein indexes are provided for measuring and correcting, if necessary, the circular angularities between the blades. Blades may be tested both individually or in sets connected to a hub.