Patent ID: 11946396
Assignee: LUBRICATION TECHNOLOGIES, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 15:
16. A method comprising:
inputting dirty fluid into a filter assembly canister having a pleated filter element therein, the filter element having a plurality of pleats, each pleat sealed together at a top end of the pleat and at a bottom end of the pleat, the filter element not having integral end caps at the top end or the bottom end and adjacent pleats not sealed to each other;
passing the dirty fluid through the filter element to provide a filtered fluid;
removing the filtered fluid from the canister via an outlet; and
after removing the filtered fluid, rotating a cover of the filter assembly canister from a fully closed position to a not fully closed position without removing the cover fully from the canister to open a fluid path for any remaining dirty fluid and filtered fluid from the canister to a drain offset from a center axis of the filter element and connected to an engine oil pan, with the cover remaining on the canister and the filter element remaining in the canister.