BOWL-CARTRIDGE FILTER HAVING INTERLOCK MECHANISM AND METHODS

摘要

A bowl-cartridge filter includes a filter cartridge and a bowl. The filter cartridge includes an interlock arrangement that is oriented to engage the filter bowl, when the filter cartridge is mounted in the filter bowl, and the bowl is rotated in a direction to remove the bowl-cartridge filter from a filter head. The filter bowl includes a cooperating interlock arrangement that engages the interlock arrangement on the filter cartridge. Example embodiments include cog arrangements, which include a plurality of projecting teeth. Various shapes for the teeth are possible, including house-shaped, truncated A-shaped, and pie wedged shape.