Abstract: A filter assembly, having a housing including a housing bottom portion; at least one ring filter element that is received by at least one receiving space defined at least in part by the housing, wherein the receiving space includes a receiving space bottom portion; a cover attached to the housing bottom portion and configured for at least partially enclosing the at least one receiving space and the ring filter element, wherein the at least one receiving space may be selectively emptied when the cover is removed; an outlet located at the receiving space bottom portion within the cover; and a closure located on the at least one ring filter element, wherein the closure is configured to at least partially close the outlet when the at least one ring filter element is inserted into the at least one receiving space.

Abstract: The invention relates to a fluid filter (1), in particular an oil filter for cleaning lubricating oil, in particular for internal combustion engines of motor vehicles, comprising a receiving space (3) for receiving a ring filter element (4), a cover (5) that can be attached to a housing (2) for closing the receiving space (3), an inlet (6) for crude fluid, an outlet (7) for cleaned fluid, an outlet (8) arranged on the bottom of the receiving space (3) in the installed state through which the receiving space (3) can be emptied when the cover (5) is removed, and a closure (11) arranged on the ring filter element (4), closing the outlet (8) when then ring filter element (4) is inserted into the receiving space (3) and the receiving space (3) is closed with the cover (5). To achieve another installed state, the cover (5) that can close the receiving space (3) is arranged on the bottom of the housing (2) in the installed state and contains the outlet (8).