Patent ID: 6939385

Claim:
A filtering system, comprising: a filter housing having a cavity for receiving a filter element; a filter element; a bayonet lock rotatable relative to said filter housing, moveable in an axial direction and configured to permit rapid securing of said filter element within, and removal of said filter element from, said cavity of said filter housing, said bayonet lock rotatable between a closed position at a first axial position wherein said filter element is coupled to said filter housing an sealed within said cavity, an open position wherein said filter element is removable from said filter housing, and a relief position at a second axial position different than said first axial position and intermediate said open and closed positions wherein said filter element is coupled to said filter housing and disposed within said cavity in a non-sealed condition; and a spring biased against said bayonet lock to prevent inadvertent movement of said bayonet lock between said open, closed and relief positions.