FUEL FILLER NECK ASSEMBLY AND METHOD OF FABRICATING.

摘要

A fuel filler neck assembly having a uniform hemmed connection (22) between an outer funnel portion (24) and an inner funnel portion (26). The outer funnel portion (24) is typically defined by an offset-expanded cylinder and side walls (36) of varying thickness. The inner funnel portion (26) includes side walls (46) that have an internal thread (48), which is configured to mate with the threads of a gas cap. A hemmed connection (22) is used to join one end (28) of the outer funnel portion (24) to one end (38) of the inner funnel portion (26). The side walls (36) at one end (28) of the outer funnel portion (24) are folded or bent inwardly and around the rim portion (50) to define a curled portion (37). A tooling assembly (60) for producing a uniform hemmed connection (22) between one end (28) of the outer funnel portion (24) and one end (38) of the inner funnel portion (26). A method of producing a uniform hemmed connection (22) between portions of a fuel filler neck.