Patent ID: 7789113

Claim:
A protective apparatus for a tank inlet fitting for a Diesel motor vehicle, with an inlet passageway designed to receive a pistol type nozzle, wherein the protective apparatus prevents against filling the fuel tank of the Diesel motor vehicle with gasoline, the protective apparatus comprising: a connector and a blocking agent, the connector and blocking agent movable together between an idle position, extending into the inlet passageway, and a free-flow position, in which the connector and blocking agent permit the entry of a Diesel pistol type nozzle into the inlet passageway, the connector entering less far into the inlet passageway than the blocking agent, such that the connector enters to such a sufficient distance that it permits the entry of a Diesel pistol type nozzle, but does not permit the entry of a gasoline pistol type nozzle of a smaller diameter, the blocking agent including two arms, supported on a pivoting axle which runs parallel to a central axis of the inlet passageway, the arms, when in the idle position, projecting into the inlet passageway, the connector being movably affixed in a plane which extends transversely to the central axis and movably coupled with the arms, such that the connector swings into a free-flow condition upon the insertion of a Diesel pistol type nozzle.