Pressure vessel and method of manufacturing the same

A pressure vessel, comprising:

• a toroidal inner vessel formed of an annular-shaped hollow tube;
• meridional reinforcing fiber layers formed of reinforcing fibers wound around an outer peripheral surface of the toroidal inner vessel along a meridional direction;
• and
• latitudinal reinforcing fiber layers formed of reinforcing fibers wound around the outer peripheral surface of the toroidal inner vessel along a latitudinal direction,
• wherein the latitudinal reinforcing fiber layers are laminated in a plurality of layers around the outer peripheral surface of the toroidal inner vessel, and the reinforcing fibers constituting each of the plurality of layers thus laminated are continuous from one layer to a next layer,
• wherein the reinforcing fibers constituting the latitudinal reinforcing fiber layers are arranged over all of the outer peripheral surface of the toroidal inner vessel uniformly in the meridional direction,
• wherein the latitudinal reinforcing fiber layers and the meridional reinforcing fiber layers are alternately laminated,
• wherein the toroidal inner vessel has a circular shape in both cross-sections in the latitudinal direction and in the meridional direction, and
• wherein the reinforcing fibers constituting the latitudinal reinforcing fiber layers are arranged around the outer peripheral surface of the toroidal inner vessel in a state not apart from each other.