Patent ID: 11883767
Assignee: CUMMINS FILTRATION IP, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 9:
10. A filter assembly comprising:
a housing including a housing drain port comprising an inner surface that defines an aperture extending through the housing drain port, the housing drain port including an upper portion comprising at least one surface modification that protrudes axially to define a top portion; and
a filter element positionable within the housing, the filter element comprising:
a filter media;
a top endplate and a bottom endplate positioned on opposite ends of the filter media; and
a filter element extension directly connected to one of the top endplate, the bottom endplate, or the filter media, the filter element extension including a seal member and an end portion, the seal member being attachable to the end portion of the filter element extension, the housing drain port and the filter element extension being alignable and sealingly connectable with each other,

wherein the inner surface of the housing drain port is sealable to the seal member of the filter element extension when the housing drain port and the filter element extension are aligned such that the seal member seals within the aperture and the at least one surface modification of the housing drain port does not abut the seal member of the filter element extension, thereby creating a sealed connection between the housing drain port and the filter element extension wherein the at least one surface modification comprises at least one of a notch, protrusion, groove, cut, and surface roughness.