Patent ID: 6139738
Filing Date: 2000-10-31
Classification: B01D,Y10S

Abstract:
A filter cartridge, comprising:a ring of filter media circumscribing a central cavity and having upper and lower ends,an upper end cap sealingly engaging the upper end of the filter media, and a lower end cap with an upper surface sealingly engaging the lower end of the filter media, and a ring-shaped member attached to and projecting axially downward away from a lower surface of the second end cap, said ring-shaped member having an annular portion with threads whereby a collection bowl with threads can be removably connected to the ring-shaped member, said ring-shaped member further including radial flow passages whereby contaminants may pass from a peripheral region of said filter cartridge interiorly of said ring-shaped member and downwardly into the attached collection bowl; and said ring-shaped member further including an anti-rotation device disposed on the annular portion, whereby said anti-rotation device can mate with a corresponding anti-rotation device on a casing to rotationally fix the filter cartridge with respect to the casing, wherein said anti-rotation device on said annular portion comprises at least one radially-outward projecting key disposed on a radially-outer surface of the annular portion.