Belted toroid pressure vessel and method for making the same

A method of making a pressure vessel comprising:

• forming a planar exterior face along at least a portion of an outer shell;
• forming a toroid body including coupling an inner shell with an outer shell, the outer shell extends along a toroid outer perimeter, and the planar exterior face extends along at least a portion of the toroid outer perimeter, coupling the inner and outer shells includes:
• flushly coupling an upper edge of the inner shell with an upper edge of the outer shell according to reception of one of the upper edges along a first mating lip of the other upper edge, and
• flushing coupling a lower edge of the inner shell with a lower edge of the outer shell according to reception of one of the lower edges along a second mating lip of the other lower edge;
• and
• coupling a support belt around the toroid outer perimeter, wherein the support belt is coupled along the planar exterior face, wherein coupling the support belt includes:
• applying at least a first belt layer around the toroid outer perimeter, the first belt layer including a first belt layer edge,
• applying at least a second belt layer over the first belt layer and around the toroid outer perimeter, a second belt layer edge of the second belt layer recessed from the first belt layer edge, and
• forming stepped tapered belt edges near upper and lower portions of the toroid outer perimeter according to the first and second belt layer edges.