R. R. Street Co. Inc.

Vincent P Romanco

Filter cartridge that prevents leakage of unfiltered fluid, as well as filter system and method using the same, are provided. The filter system includes a housing having an inlet for introducing unfiltered fluid into the housing and an outlet extending into the housing for draining filtered fluid after filtration occurs. A series of filter cartridges are positioned on the outlet within the housing, and gaskets are placed between adjacent filter cartridges and at each extreme end of the series. Each filter cartridge includes filter material configured in a tubular shape and opposite end walls located at the ends of the filter material. An aperture is formed through each end wall to receive the outlet when the filter cartridge is positioned thereon, and concentric pressure ridges are located on each end wall so as to substantially encompass the aperture. The pressure ridges extend outwardly from the end wall to engage the adjacent gasket and prevent leakage of unfiltered fluid between the end wall and the gasket.

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Naperville, IL, United States of America

Vincent P Romanco