Patent ID: 9272617
Filing Date: 2016-03-01
CPC Classification: B60K

Claim Text:
1. An anti-misfueling filler neck device configured to prevent different types of fuel from being supplied, the anti-misfueling filler neck device comprising: a housing into which a fuel gun is inserted; sliding projections mounted at the bottom of the housing so as to slide laterally and face each other; springs interconnecting the sliding projections horizontally to elastically support the sliding projections; a stopper including a locking groove and formed on one of the sliding projections; and a flapper having a hinge structure and rotatably mounted on the other sliding projection to open and close a lower opening of the housing, wherein when a fuel gun having a relatively small diameter is inserted while the flapper is locked and closed by the locking groove of the stopper, the sliding projections are tightened by the springs such that the flapper is maintained in the closed state, and when a fuel gun having a relatively large diameter is inserted, the sliding projections are opened more widely than the length of the flapper such that the flapper is released from the stopper and opened.