US Patent 10232289 Filter coupling

A coupling filter for a fluid system comprising a molded hollow tubular body having a wall defining a flow passage, a porous filter element of generally parabolic cross-sectional shape with a base portion extending across the entire flow passage and a pair of wing portions extending longitudinally of the flow passage and converging toward the base portion. In one form the base portion is cylindrical and in another form it is “W” shaped with a series of flat mesh panels presented to the flow path.