Patent ID: 8440143

Claim:
An air purifier, comprising: a tubular body with a longitudinal axis and comprising a wall defining an interior space, a first opening to the interior space, and a second opening to the interior space; an airflow pathway extending along the longitudinal axis through the tubular body defined between the first and second openings; a photocatalyst arranged within the interior space and comprising a major surface extending lengthwise along a substantial portion of the airflow pathway; and a source of ultraviolet radiation arranged to emit ultraviolet radiation onto at least a portion of the major surface of the photocatalyst to activate the photocatalyst, wherein the wall of the tubular body comprises a sheet of material comprising a first edge and a second edge, and the tubular body is formed by overlapping the first and the second edges of the wall, and wherein a portion of the photocatalyst is captured between the overlapped first and second edges to couple the photocatalyst to the tubular body such that the major surface is supported along the airflow pathway in a cantilever manner.