Patent ID: 7428974

Claim:
A cap detent unit for a fuel tank fueling device, comprising: a cap retainer ring for retaining a fuel cap that opens and closes an inlet of an inlet pipe connected to a fuel tank; a flexible elongate tether extending from the cap retainer ring and having a first end connected to the cap retainer ring and a second end opposite to the first end; an attachment component formed on the second end of the tether for attaching to a vehicle body member, wherein the vehicle body member is an attaching member, wherein the attaching member is an interior of a lid panel covering the fuel cap, and wherein the attaching member is exposed to an outside of the vehicle when the lid panel covering the fuel cap is opened for fueling; and a detachable component having (i) a detent formed on the cap retainer ring and having an L-shaped component, and (ii) an engaged component formed on the tether adjacent to the attachment component on the second end of the tether and formed in a form of a square to detachably engage with the L-shaped component, wherein the tether forms a curved-shape when the cap is removed from the inlet pipe and the detent engages with the engaged component.