A locking plate fast fastening ceiling fan blades is provided where several nicks are formed, and a thru hole is formed communicating with the open side of one of the nicks. A wedge unit is provided in the thru hole of the locking plate. Thus, when a blade is installed on the blade rack, only the blade...http://www.google.es/patents/US8029243?utm_source=gb-gplus-sharePatente US8029243 - Locking plate fast fastening ceiling fan blades
