초록 ▼

An improved fuel level responsive peelaway action valve for vehicle fuel tanks, in which a float moves a valve closure element into sealing contact with a vapor venting outlet, and then pulls or "peels" the valve element off the vapor venting outlet when fuel level drops. The valve closure element c

An improved fuel level responsive peelaway action valve for vehicle fuel tanks, in which a float moves a valve closure element into sealing contact with a vapor venting outlet, and then pulls or "peels" the valve element off the vapor venting outlet when fuel level drops. The valve closure element comprises a thin, flexible sealing portion for engaging the vapor venting outlet with low sealing forces, and a stiffened marginal portion acted on by a rigid cage or frame which is connected to the float. As the float drops, the cage contacts the stiffened marginal portion and levers the valve element off the venting outlet.

대표청구항 ▼

1. A fuel level responsive valve adapted for use in a vehicle fuel tank to close vapor venting from the tank to a vapor recovery apparatus when the fuel level in the tank rises to a certain level, the valve comprising:(a) a valve body having a float chamber and a vapor venting outlet at an upper end

1. A fuel level responsive valve adapted for use in a vehicle fuel tank to close vapor venting from the tank to a vapor recovery apparatus when the fuel level in the tank rises to a certain level, the valve comprising:(a) a valve body having a float chamber and a vapor venting outlet at an upper end of the float chamber; (b) a float in the float chamber, the float having a closed position near the vapor venting outlet when the fuel level rises, and an open position away from the vapor venting outlet when the fuel level drops; (c) a valve element disposed for movement with and including means providing a lever type peelaway opening action to the valve element with respect to the venting outlet wherein the valve element comprises a resilient seal portion trapped on said float for limited vertical and horizontal movement and including a relatively stiff, peripheral portion.