Patent ID: 11932104
Assignee: NIPPON STEEL CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A fuel tank comprising:
a lower panel made of steel and an upper panel made of steel;
at least one pillar made of steel which is disposed in an interior space formed by the lower panel and the upper panel facing each other and of which a first end portion is fixed to the lower panel and a second end portion is fixed to the upper panel in a state where the second end portion is disposed in a hole formed in the upper panel;
a first nut which is made of steel and is fixed to an inner surface of the lower panel and to which the first end portion of the pillar is fitted;
a flange that is disposed on an inner surface of the upper panel and is fixed to the pillar, the flange having a tapered portion, which is inclined downward toward an outside in a radial direction of the flange; and
a second nut which is made of steel and is disposed on an outer surface of the upper panel and to which the second end portion of the pillar is fitted so that the upper panel is interposed between the flange and the second nut.