Original Publication Date: 1980-Jan-01
Included in the Prior Art Database: 2005-Feb-12
An improved air filter utilizes tortuous paths lined with sticky material to entrap dust particles. The filter comprises a plurality of louver elements 3 arranged, as shown, to create a plurality of tortuous paths for air flow as indicated by the arrows 5. The paths are lined with material 7 which presents a sticky surface to the air streams, to entrap dust particles in the air flow.