초록 ▼

A unitary structure access panel (10) for use particularly in aircraft wing tanks (32) having openings (30). The panel is made having a molded nylon fiberglass reinforced base (12) and having a high strength-to-weight core (96, 132) spaced between a nylon base first face (24) for extending into the

A unitary structure access panel (10) for use particularly in aircraft wing tanks (32) having openings (30). The panel is made having a molded nylon fiberglass reinforced base (12) and having a high strength-to-weight core (96, 132) spaced between a nylon base first face (24) for extending into the tank and an outer second face (98) for extending outwardly of the tank. In a peripheral portion (20) of the base, there are multiple peripherally spaced recesses (50), each of which contains a lightweight simplified fastener retainer and anti-rotation device (66).

대표청구항 ▼

A unitary structure access panel for a fuel tank, comprising: a molded reinforced hard plastic panel base for fitting into an opening in a tank; said panel base having an external first face for fitting into the tank and having peripheral side portions extending from the first face; an external seco

A unitary structure access panel for a fuel tank, comprising: a molded reinforced hard plastic panel base for fitting into an opening in a tank; said panel base having an external first face for fitting into the tank and having peripheral side portions extending from the first face; an external second face, opposite said first face and joining said peripheral side portions, for facing outwardly along the tank wall, said second face being formed of lightweight electrically conductive material; a peripheral hard plastic portion on said base extending around said first face for extending into the tank and overlapping an inner marginal tank surface around and along the tank opening; a high strength-to-weight core in said base inwardly of said peripheral portion and extending between said faces and said peripheral side portions; a continuous groove in said peripheral portion for containing a seal for forming a seal between the peripheral portion and the marginal surface of the tank; peripherally spaced inserts in said peripheral portion; means in said inserts to retain fastener nuts therein and against rotation and adjustably to receive threaded ends of fasteners; and a peripherally outer surface of said peripheral portion extending around and along said groove, said outer surface facing in the same direction as the seal for making direct contact with said marginal surface along said seal.