Abstract: A readily portable fan device which is usable both as a cooling fan for circulating ambient air and as a device for increasing the flow of air through a register, comprises a housing containing both a fan impeller and an electric motor for driving the impeller, the housing having a skirt surrounding a bottom air inlet and capable of at least partially sealing a space around such register, the fan directing air upwardly through an outlet aperture when resting on the skirt. The device has another floor engaging surface perpendicular to the plane of the skirt on which the device may rest with its air inlet open to the ambient air. The impeller blades and the outlet aperture are specially designed to maximize air throughput.

Abstract: A readily portable fan device which is usable both as a cooling fan for circulating ambient air and as a device for increasing the flow of air through a register, comprises a housing containing both a fan impeller and an electric motor for driving the impeller, the housing having a skirt surrounding a bottom air inlet and capable of at least partially sealing a space around such register, the fan directing air upwardly when resting on the skirt. The device has another floor engaging surface perpendicular to the plane of the skirt on which the device may rest with its air inlet open to the ambient air.

Abstract: A readily portable fan device which is usable both as a cooling fan for circulating ambient air and as a device for increasing the flow of air through a register, comprises a housing containing both a fan impeller and an electric motor for driving the impeller, the housing having a skirt surrounding a bottom air inlet and capable of at least partially sealing a space around such register. Extendable leg means are provided which, when extended, hold the housing skirt clear of a floor and allow the device to draw in air under the skirt when used as a cooling fan.