Rotary vessel with a releasable locking device for a filter assembly

A rotary vessel for a filter assembly, the rotary vessel configured to be rotatably mounted in a housing of the filter assembly, the rotary vessel comprising:

• a vessel body having an open end;
• a cover receivable on the vessel body to close the open end;
• and
• wherein the vessel body comprises
• a bearing tube extending axially through an interior of the vessel body and defining a central bore configured to receive a spindle of the filter assembly such that the rotary vessel with the vessel body and the cover are rotatable about a longitudinal axis of the spindle;
• at least one recess arranged on the bearing tube;
• wherein the cover further comprises:
• an aperture, wherein the spindle protrudes through the aperture of the cover when the cover is received on the vessel body;
• a releasable locking device selectively locking and unlocking the cover to the bearing tube, comprising:
• at least one radially moveable projection on the cover including one or more radially moveable lugs arranged in the aperture of the cover;
• wherein the at least one recess is configured to receive the one or more radially moveable lugs;
• wherein the one or more radially moveable lugs, when received in the at least one recess, limits or inhibits a relative rotation of at least a part of the cover relative to the vessel body.