US Patent 7568592 Vehicle fuel tank

A vehicle fuel tank made of a resin for storage of fuel is made by forming a substantially hexahedron by erecting left, right, front and rear wall surfaces from a bottom portion and connecting distal ends of the left, right, front and rear walls to an upper surface, wherein at least one of the suppressor walls extending longitudinally and perpendicularly is formed on at least one of the bottom portion and the upper surface for suppressing movement of the fuel.