Abstract: A filler neck assembly includes a funnel member having a tubular body defining a transition portion between an inlet opening and an outlet opening and a nozzle receptor disposed within the tubular body. The nozzle receptor positions a nozzle relative to the transition portion to create a suctioning effect that prevents fuel vapors from escaping into the atmosphere during fueling.

Abstract: A method of forming a gas tank filler neck includes configuring at least a portion of a seamless tubular member to induce a swirl to passing fuel for venting vapors from the gas tank during fuel filling. The configuration may include deep drawing a seamless funnel member, forming a relatively large inlet at one end thereof, and forming a relatively small outlet at the opposite end thereof, the inlet having an axis offset from the axis of the outlet. A filler neck includes a seamless funnel member defining a relatively large inlet opening and relatively small outlet opening, the position of the inlet opening relative the outlet opening inducing a swirl to the fuel being supplied.

Abstract: A fuel tank filler assembly includes a filler neck configured to receive a fuel supply nozzle. The filler neck includes a one-piece seamless funnel member having a tubular body configured to swirl supplied fuel and reduce vapor escape. The tubular body includes integrally formed threads for receiving a gas cap. The funnel member defines in off-set axial relation a relatively large inlet opening adapted for attachment to a receptor for the nozzle and a relatively small necked down outlet opening adapted for attachment to the inlet of a filler tube. The filler tube is in communication with the fuel tank. A method for manufacturing the fuel tank filler neck is also disclosed.

Abstract: A fuel tank filler assembly includes a filler neck configured to receive a fuel supply nozzle. The filler neck includes a one-piece seamless funnel member having a tubular body configured to swirl supplied fuel and reduce vapor escape. The tubular body includes integrally formed threads for receiving a gas cap. The funnel member defines in off-set axial relation a relatively large inlet opening adapted for attachment to a receptor for the nozzle and a relatively small necked down outlet opening adapted for attachment to the inlet of a filler tube. The filler tube is in communication with the fuel tank. A method for manufacturing the fuel tank filler neck is also disclosed.

Abstract: A fuel tank filler neck is provided to reduce the escape of gasoline vapor from an automobile fuel tank system and is leak tight. The filler neck is configured to receive a fuel supply nozzle. The filler neck includes a one-piece seamless funnel member having a tubular body and an elongated tubular member. The funnel member defines in off-set axial relation a relatively large inlet opening adapted for attachment to a receptor for the nozzle and a relatively small necked down outlet opening adapted for attachment to the inlet of an elongated tubular member. The tubular member is adapted to be in communication with the fuel tank. A method for manufacturing the fuel tank filler neck is also disclosed.

Abstract: A fuel tank filler neck is provided to reduce the escape of gasoline vapor from an automobile fuel tank system and is leak tight. The filler neck is configured to receive a fuel supply nozzle. The filler neck includes a one-piece seamless funnel member having a tubular body and an elongated tubular member. The funnel member defines in off-set axial relation a relatively large inlet opening adapted for attachment to a receptor for the nozzle and a relatively small necked down outlet opening adapted for attachment to the inlet of an elongated tubular member. The tubular member is adapted to be in communication with the fuel tank. A method for manufacturing the fuel tank filler neck is also disclosed.