Patent ID: 11911714
Assignee: CUMMINS FILTRATION IP, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A filter element comprising:
a top endplate;
a bottom endplate;
a pleated filter media positioned between said top endplate and said bottom endplate, the pleated filter media comprising a downstream face configured to provide a mixture; and
a first unpleated filter media positioned between said top endplate and said bottom endplate, the first unpleated filter media comprising a plurality of pores and a first perforation, each of the plurality of pores being smaller than the first perforation, the first perforation formed as a first hole in the first unpleated filter media, the first unpleated filter media comprising an upstream face configured to receive the mixture from the pleated filter media;
wherein the first perforation is positioned at a bottom portion of the first unpleated filter media with respect to a direction of gravity, and
wherein the first hole extends in a second direction transverse to the direction of gravity.