Patent ID: 8801091

Claim:
A chair assembly comprising: a seat and a backrest, wherein the backrest comprises a bottom, a top opposite the bottom, a front side, and a back side opposite the front side; wherein the backrest includes a material that allows airflow to pass therethrough; a fan assembly is attached to the chair assembly at the bottom of the backrest; an airflow guide attached to the backside of the backrest of the backrest into which airflow from the fan assembly is directed, wherein the airflow guide is associated with the backrest in a manner such that airflow emitted from the fan assembly exits the chair assembly through the backrest, wherein the airflow guide is substantially impermeable to airflow, and wherein a distance between the bottom of the backrest and an opposing portion of a bottom of the airflow guide is greater than a distance between the top of the backrest and an opposing portion of a top of the airflow guide; wherein the chair assembly comprises a collapsible frame and is moveable between a closed condition and an open condition for sitting, wherein the fan assembly comprises at least one fan unit, and wherein the at least one fan unit is oriented to blow air through the airflow guide in a direction generally parallel to the backrest and upward toward the top of the backrest when the chair is in the open condition.