| 摘要 |
A ceiling fan is adapted to engage the socket of an incandescent light bulb ceiling fixture and includes a neck having a base shell with external helical threads and a central contact that match those of conventional incandescent light bulb for mating receipt in a conventional light bulb socket. The central contact of the neck is electrically isolated from the base shell. An electric motor drives a hub in a predetermined direction and derives power through the base shell and central contact from the incandescent bulb socket that receives the neck. The ceiling fan may be provided with a fluid or other cushioning coupling between the motor and a rotatable hub that yields a cushioning effect so as not to disturb the mating between the neck of the ceiling fan and the incandescent bulb socket. Furthermore, the direction in which the vane elements of the fan and the motor are rotated is selected to cause any reactionary torque to tighten the coupling between the neck of the ceiling fan and the incandescent bulb socket.
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