TIP-PROOF CAP AND FILLER NECK

摘要

A filler neck is provided for receiving a filler cap including a closure member having an axially outer portion, a threaded axially middle portion, and an axially inner portion. The filler neck includes a generally cylindrical tube having an axially outer portion, a threaded axially middle portion for receiving the threaded axially middle portion of the closure member, and a reduced-diameter axially inner portion. The reduced-diameter axially inner portion is positioned for receiving the axially inner portion of the closure member in a closely spaced relation to prevent radial movement of the axially inner portion of the closure member.