Patent ID: 9393865
Filing Date: 2016-07-19
CPC Classification: B60K

Claim Text:
1. A misfueling prevention system for a vehicle, comprising: an upper housing disposed at an inlet of a fuel filler neck; a lower housing disposed inside the fuel filler neck, supported by a hinge structure in the upper housing, and rotatable by a center returning spring disposed between the upper housing and the lower housing; a stopper spring and a stopper, the stopper being rotatably assembled to one side of the lower housing and rotatable by a contact with a refueling gun; and a flapper spring and a flapper, the flapper having one end rotatably assembled to another side of the lower housing and another end lockable in a recess part of the stopper and pushed to be opened by the refueling gun when released from the recess part of the stopper.