Patent ID: 6170510
Filing Date: 2001-01-09
Classification: B60K,F16K,Y10T

Abstract:
An apparatus for controlling discharge of fuel vapor from within a vehicle fuel tank, the apparatus comprisinga valve container adapted to be mounted in a top wall of the fuel tank and formed to include an inlet in fluid communication with the fuel tank, an outlet, a side wall extending between the inlet and outlet, and a chamber in fluid communication with the inlet and the outlet,a valve member disposed in the chamber and formed for movement between an open position allowing flow of fuel vapor through the outlet and a closed position preventing flow of fuel vapor through the outlet, the valve member including a central post and wing segments positioned to lie in a spaced apart relationship about the post, the wing segments being forned to define flow passages sized to permit the flow of fuel vapor therethrough and to block momentarily the flow of liquid fuel therethrough, anda secondary float valve disposed between the inlet of the valve container and the valve member and being formed for movement between an open position allowing flow of fuel vapor to the wing segments of the valve member and a closed position blocking flow of liquid fuel to the wing segments.