Abstract: A portable ventilation system with a single centralized electric motor with two in-line drive shafts connected to two centrifugal fans directing air flow from inlet openings on the sides of the base unit, up into a vertically oriented fixed air plenum. A vertically oriented adjustable air plenum is positioned on and telescopes over the fixed air plenum to conduct a flow of air up from the base unit to an elevated height appropriate for exhausting the air flow into the environment. The adjustable air plenum redirects the air flow through a horizontal outlet. The adjustable air plenum may be set at a number of different positions on the fixed air plenum so as to vary the overall height of the system and the point at which the horizontal delivery of air flow is achieved. Heating elements may be incorporated into the airflow system.

Abstract: Provided herein is a portable device useful for providing ventilation to a selected area via circulation of ambient air. A device according to the present invention is especially well-suited to provide ventilating air to a person resting on a bed, by directing air from the room to the volume defined by the top surface of the mattress of the bed and a bed covering disposed thereon. Use of the present invention increases the ability of persons to achieve restful sleep by enabling convenient control of the air surrounding the person to a comfortable level.

Abstract: Provided herein is a portable device useful for providing ventilation to a selected area via circulation of ambient air. A device according to the present invention is especially well-suited to providing ventilating air to a person resting on a bed, by directing air from the room to the volume defined by the top surface of the mattress of the bed and a bed covering disposed thereon. Use of the present invention increases the ability of persons to achieve restful sleep by enabling convenient control of the air surrounding the person to a comfortable level.