Patent ID: 8732930
Filing Date: 2014-05-27
Classification: F04B,F04D,Y10T

Abstract:
1. A method of knocking down a drum fan into a compact disassembled drum, comprising the steps of: nesting identical curved housing shroud members of the disassembled drum fan together in a stacked arrangement; nesting together identical drum fan blades together; separating a front grill into separate identical modular front grill members having substantially flat sides, and separate identical front external elongated brace members, each of the front external elongated brace members having a length substantially as long as each of the flat sides of the front grill members, the identical modular front grill members being identical in number to the identical front external elongated brace members; separating a rear grill into separate identical modular rear grill members having generally flat sides, and separate identical rear external elongated brace members, each of the rear external elongated brace members having a length substantially as long as each of the flat sides of the rear grill members, the identical modular rear grill members being identical in number to the identical rear external elongated brace members; separating a motor and a hub; and compacting the stacked curved housing shroud members with the nested identical drum fan blades and the separated front grill members, the separated front external elongated brace members, the separated rear grill members and the separated rear external elongated brace members and the separated motor and the hub into a space that is approximately 50 to approximately 75 percent smaller than space needed for an assembled drum fan.