Abstract: A ceiling mount support tool for temporarily mounting an electrical device, such as a ceiling fan to a ceiling bracket. The ceiling mount support tool has a shaft, a ball joint at the proximal end of the shaft, and a socket at the distal end of the shaft. The ceiling mount support tool is mounted to a ceiling flange, and the ceiling fan is mounted to the ceiling mount support tool. Thereafter, electrical wires can be connected, and then the ceiling fan and the ceiling mount support tool can be removed. The ceiling fan with the wires connected can then be mounted to the ceiling bracket.

Abstract: A structural support system for a fan array system. The system allows for a modular bulkhead wall to be customized and installed within a cabinet of an air handling unit. The modular bulkhead wall comprises one or more intermediate bulkhead stiffening elements that enable the modular bulkhead wall to support the fan array system.

Abstract: An apparatus for connecting one or more guy wires to a down rod, the connector having first and second separable portions which form an aperture for receiving the down rod. At least one of the first or second portions includes at least one passage adapted for releasably receiving a portion of the guy wire. The guy wire may include an anchor, and the passage for receiving the guy wire may be adapted for capturing the anchor so as to preclude movement of the guy wire in a radial direction.

Abstract: A ceiling fan may include a shaft coupled to a ceiling, a cover to surround the shaft, a main blade having a blade hole which is a space open inward, and a sub-blade positioned in the blade hole. The sub-blade is disposed to have an angle of attack different from an angle of attack of the main blade. The ceiling fan may resolve a red zone of the air flow and may improve air volume and the flow rate due to the dual blades.