Patent ID: 6662820
Filing Date: 2003-12-16
Classification: B60K,F16K,Y10T

Abstract:
A vent apparatus adapted to be coupled to a fuel tank, the apparatus comprisinga valve housing made of a non-weldable plastics material, the valve housing being formed to include a chamber portion defining an interior region, an outer portion coupled to the chamber portion and formed to include an aperture, and a venting outlet coupled to the outer portion at the aperture and provided to conduct fuel vapor from the interior region of the chamber portion to a destination outside the valve housing, a valve positioned to lie within the interior region of the chamber portion and arranged to move within the interior region to open and close the aperture defined by the outer portion, and a tank mount made of a weldable plastics material, the tank mount including a housing mount coupled to the valve housing, an annular base coupled to the housing mount and adapted to be coupled to a fuel tank to support the chamber portion within a mounting aperture formed in the fuel tank, and a plurality of annular flanges appended to an exterior surface of the housing mount and arranged to lie in series in spaced-apart relation to one another and in mating relation to the outer portion of the valve housing to define a labyrinthine boundary between the tank mount and the outer portion of the valve housing.