Fuel tank filler tube closure assembly

Abstract

The foregoing and other objects of the invention will be realized by a closure assembly engageable with the filler tube of a fuel tank for preventing the outflow of fuel vapors from the fuel tank during a filling procedure and including a manually grippable generally circular top member having a central axial opening therein for permitting the passage of a fuel delivery nozzle therethrough and receiving a relatively smaller press fitted cap thereat. A threaded bottom member of generally circular cross section extends from the top member for threadable engagement with a threaded opening in the filler tube. The bottom member is of a generally hollow construction and has a central axial opening therein and in which a resilient circular annular fuel vapor absorbent filter element is located. The filter element has an opening therein for permitting the passage of the fuel nozzle therethrough while remaining in contact therewith so as to prevent any fuel vapor surrounding the nozzle and not absorbed from escaping upwardly into and out of the top member.

Dependencies are inferred from the claim text.