Patent ID: 7287542

Claim:
A combined-vapor vent/tipping and shutoff valve assembly for use in a fuel tank comprising: a housing defining a vent-chamber having an inlet for receiving fuel vapor from the tank and a vent outlet adapted for connection to a vapor storage device, said housing further defining a recirculation chamber having an outlet adapted for connection to a fuel tank filler tube, a valve member disposed in said vent chamber and moveable therein for controlling flow between said inlet and said vent outlet; a dip tube associated with said housing and communicating with said recirculation chamber and adapted for venting vapor until liquid fuel covers the end thereof; and, a diaphragm disposed in said recirculation chamber, wherein the diaphragm partitions the recirculation chamber and defines a passage across the diaphragm to form a flow restriction between said dip tube and said recirculation chamber outlet and operative for effecting movement of said valve member in response to a difference in pressure forces across said flow restriction acting on said pressure responsive means.