FILTER CARTRIDGE WITH ELLIPTICAL SHAPED PLEATS

摘要

A filter cartridge includes a first cylindrical shaped pleated filter element having a plurality of first outer pleats, each first outer pleat being elliptically shaped and having a sidewall. The filter cartridge further includes a second cylindrical shaped pleated filter element having a plurality of second outer pleats, each second outer pleat having a sidewall. The second cylindrical shaped pleated filter element is nested within the first cylindrical shaped pleated filter element with each second outer pleat disposed within a corresponding first outer pleat and with the sidewall of the second outer pleat substantially free of contact with the sidewall of the first outer pleat along the portion of the sidewall of the second out pleat that is disposed within the first outer pleat. This filter cartridge is particularly valuable in relatively small diameter in-line type filters and water bottle filters.

主权项

1. A filter cartridge comprising:
a cylindrical shaped pleated filter element having a plurality of outer pleats; and each exterior pleat being elliptically shaped.