Patent ID: 7721772

Claim:
A protective device for an aircraft fuel filler port associated with an aircraft wing fuel tank comprising: an annular collar which defines a central opening for the device for coaxial placement relative to a fuel filler port formed in an upper wing skin of an aircraft wing; a wall structure connected to the annular collar so the wall structure is dependently fixed in coaxial alignment with the central opening thereof and with the fuel filler port, wherein the wall structure defines a U-shaped forward edge extending between uppermost and lowermost extents thereof, and an arcuately concave surface rearwardly of the forward edge, and wherein the wall structure slopes downwardly and laterally relative to the fuel filler port such that the lowermost extent thereof protrudes laterally beyond a vertical plane tangent to the central opening to visibly block a lower wing skin of the aircraft wing and thereby prevent a nozzle associated with refueling equipment from striking the lower wing skin of the aircraft wing when inserted into the fuel filler port.