초록 ▼

A roll-over valve is provided for use in a vehicle fuel system having an outlet for discharging fuel vapor. The roll-over valve includes a hollow valve member that terminates in a distal tip and includes a side wall. The distal tip is formed to include a top aperture and the side wall is formed to i

A roll-over valve is provided for use in a vehicle fuel system having an outlet for discharging fuel vapor. The roll-over valve includes a hollow valve member that terminates in a distal tip and includes a side wall. The distal tip is formed to include a top aperture and the side wall is formed to include at least one side aperture. The top aperture and side aperture cooperate to prevent the formation of a low pressure area that might otherwise be formed over the distal tip to prevent the hollow valve member from prematurely sealing the outlet. A roll-over ball is provided for moving the distal tip from an outlet-opening position to an outlet-closing position in response to tilting of the hollow valve member during vehicle roll-over conditions. A ball is provided in the hollow valve member for closing the top aperture during a selected first range of tilting positions of the hollow valve member. A float is provided for urging the ball toward its top aperture-closing position in response to an accumulation of fuel in the hollow valve member in excess of a predetermined amount during a selected second range of tilting positions of the hollow valve member.

대표청구항 ▼

A roll-over valve for use in a vehicle fuel system having an outlet for discharging fuel vapor, the roll-over valve comprising a hollow valve member terminating in a distal tip formed to include a top aperture and having a side wall formed to include at least one side aperture, roll-over means for m

A roll-over valve for use in a vehicle fuel system having an outlet for discharging fuel vapor, the roll-over valve comprising a hollow valve member terminating in a distal tip formed to include a top aperture and having a side wall formed to include at least one side aperture, roll-over means for moving the distal tip from an outlet-opening position to an outlet-closing position in response to tilting the hollow valve member during vehicle rollover conditions, and closing means in the hollow valve member for closing the top aperture in response to predetermined tilting movements of the hollow valve member so that passage of fuel through the outlet is blocked.