Aerodynamic filter

Abstract From the Canadian patent

The filter of the present invention continually provides the passenger compartment of a vehicle with a supply of purified air, even in the most severe environmental conditions. The filter comprises an inlet surface an outlet surface, walls, which define a plurality of passages which extend from the inlet surface to the outlet surface, and a filtration means for removing the impurities from the fluid. The filter preferably can be subdivided into a plurality of layers including an inlet, layer, an intermediate layer an outlet layer. Each layer, includes a plurality of cells the cells having walls with a, generally curvilinear shape. A plurality of the passages are preferably in fluid …