Patent ID: 8052868

Claim:
A fuel filter device comprising: a bag-shaped filter member adapted to communicate an inner space of the filter member with a fuel suction opening in a fuel tank, the filter member comprising at least one layer, wherein the at least one layer is an inhibition layer having a structure to prevent water in a fuel tank from coming into the inner space of the filter member by pressure applied to the filter member when the water is frozen, and the inhibition layer is formed of a resin material, which sets a difference between a contact angle to water and a contact angle to fuel at 80 degrees or above, upper and lower resin beams respectively formed on upper and lower external surfaces of the filter member; upper and lower collapse preventing members which are respectively associated with the upper and lower resin beams and which engage one another within the inner space to limit a distance by which the upper and lower resin beams can approach one another under the pressure applied to the filter member; receiving members which extend into the inner space from the upper and lower resin beams; and a conduit member attached to the filter member adapted to communicate with the fuel suction opening, the conduit member being formed as a pipe and having plate-shaped elastic pieces projecting from one end thereof and entering the inner space of the filter member, the plate-shaped elastic pieces being spaced apart from each other and contacting the receiving members to prevent a portion of the filter member which communicates with the conduit from being narrowingly deformed under the pressure applied to the filter member.