Patent ID: 7223078
Filing Date: 2007-05-29
Classification: F04D

Abstract:
1. An apparatus for firmly fastening a fan blade to a bracket arm mounted a ceiling fan motor, the fan blade having a plurality of mounting apertures extending transversely through an inward end of the fan blade, the apparatus comprising: a plurality of protuberant members extending from the bracket arm, said protuberant members having shank portions and head portions which fit through the apertures in a the fan blade to extend outward of the fan blade on an opposite side of the fan blade from the bracket arm; a rotary plate fastener having an upper surface, a lower surface and peripheral edge portions extending between said upper and lower surfaces, said peripheral edge portions having openings which are C-shaped and aligned for registering adjacent to said shank portions of said protuberant members extending through the fan blade; and wherein said rotary plate fastener is rotated to twist said openings around said shank portions of said protuberant members, such that said rotary plate fastener is pressed between said head portions of said protuberant members and a surface of the fan blade.