Patent ID: 7946430

Claim:
A filter for use in a filtration assembly, the filtration assembly including a head having at least one stand-off pin, the filter comprising: a canister open on a first end, the canister having a wall defining an interior cavity; an endplate having a top end and a bottom end, the endplate having an inlet and an outlet both extending between the top end and the bottom end, the endplate being connected to the first end of the canister; wherein the endplate inlet is fluidly connected to the endplate outlet through a filter media positioned within the interior cavity; and wherein the top end of the endplate includes a first externally protruding rib substantially spanning a circumferential portion of the top end of the endplate that projects upwardly therefrom such that the first externally protruding rib does not overlap the stand-off pin when the filter is connected to the head, and wherein a top contact surface of the first externally protruding rib is equidistant from the top end of the endplate at all points; a second externally protruding rib substantially spanning a circumferential portion of the top end of the endplate, wherein the first externally protruding rib is at a first radius, and the second externally protruding rib is at a second radius that is larger than the first radius; and the second externally protruding rib projects upwardly from the top end of the endplate such that the second externally protruding rib does not overlap the stand-off pin when the filter is connected to the head, wherein a top contact surface of the second externally protruding rib is equidistant from the top end of the endplate at all points.