Patent ID: 9541097
Date: 2017-01-10
CPC Classifications: F04D

Claim:
1. A fan assembly comprising: a mount that is adapted to be installed on the wall of a building; a motor attached to the to the mount, the motor having a shaft; a hub assembly coupled to the shaft of the motor so that the hub is rotated by the shaft of the motor, wherein the hub assembly includes a main portion that defines a plurality of mounting locations and wherein the hub assembly further includes a plurality of arm members that are detachably mounted within the mounting locations; a plurality of fan blades having a minimum length of 5 feet, wherein the plurality of fan blades are coupled to the arm members so as to extend outward from the main portion of the hub assembly such that rotation of the motor results in rotation of the fan blades and wherein the outer surface of the arm members are contoured and the inner surfaces of the fan blades are contoured so that the inner surface of the fan blades engage with the outer surfaces of the arm member so that force is directed from the arm member to the fan blade by the engagement there between the contoured surfaces of the arm members and the fan blades.