Patent ID: 7037188

Claim:
Apparatus for use in creating a zone of conditioned air over a surface of a bed, comprising: an air delivery unit having first and second ends, an interior air flow passage between the first and second ends, an air inlet opening in flow communication with the flow passage through which conditioned air enters the air flow passage, and an air outlet section that is configured to place the flow passage of the air delivery unit in flow communication with the exterior of the air delivery unit; wherein the air outlet section discharges airflow in a generally horizontal direction generally parallel to the surface of the bed, discharges airflow in a generally vertical direction generally perpendicular to the surface of the bed, and discharges airflow in back of the generally vertical direction for creating an air dam; and wherein the air outlet section extends over an arc angle of from about 110 degrees to about 130 degrees, with about 30 degrees to about 40 degrees of arc back of the vertical direction.