Patent 8376924 was granted and assigned to Mann + Hummel on February, 2013 by the United States Patent and Trademark Office.
A shuttle valve (30) is provided in the axial bore (19) of a stationary spindle (11) through which fluid is supplied to a rotor (12) of a centrifugal separator to close off the fluid outlets (23, 24) to the rotor (12) automatically upon removal of the cap (27) or cover assembly (20) in the event that fluid supply has not been switched off.