Replaceable filter cartridge having woven plastic sleeve - to hold element to perforated supporting cylinder

摘要

A filter cartridge of economical construction uses a paper filter element sandwiched between a perforated metal inner cylinder and a woven plastic sleeve stretched or heat-shrunk over it. Used in vehicular and other applications. The cost of an outer perforated metal cylinder is eliminated compared with conventional cartridges, and considerably easier assembly is obtd.