Patent ID: RE42059

Claim:
In combination: a fluid filter centerpost assembly comprising: a main body defining a first flow opening and an open interior and having an oval shape in lateral cross section; an oval-shaped radial flange; an oval-shaped interior shelf defining a second flow opening and being positioned on an incline in said open interior; a closing cap assembled into said main body; and a movable valve ball positioned on said interior shelf; and a fluid filter cartridge received by said fluid filter centerpost assembly comprising: a filtering media; a closed endcap assembled to one end of said filtering media, said closed endcap including a blocking pin, said blocking pin being constructed and arranged for limiting any movement of said movable valve ball in the direction of said second flow opening; an open endcap assembled to another end of said filtering media; and an oval-shaped seal received by said open endcap and being positioned around said main body and resting on said radial flange.