Patent ID: 8464884

Claim:
A container assembly comprising: a tank formed of a polymeric material with said tank having a first half and a second half for storing materials under pressure with said first half having a first inner surface and a first outer surface terminating at a first open edge and said second half having a second inner surface and a second outer surface terminating at a second open edge with said edges facing each other when said halves form said tank, said first and second inner surfaces being substantially smooth between said edges, a first longitudinal hoop stringer formed of a polymeric material and mounted to said first outer surface of said first half adjacent said first edge, a second longitudinal hoop stringer formed of a polymeric material and mounted to said second outer surface of said second half adjacent said second edge with said first and second longitudinal hoop stringers facing each other when said halves form said tank, at least one first radial hoop stringer formed of a polymeric material and mounted on said first outer surface and intersecting said first longitudinal hoop stringer to define a first joint there between, and at least one second radial hoop stringer formed of a polymeric material and mounted on said second outer surface and intersecting said second longitudinal hoop stringer to define a second joint there between with said first and second joints aligning with each other, wherein a portion of each of said hoop stringers at said first and second joints extends radially outward beyond a height of each respective hoop stringer with said portions of said hoop stringers including an inclined surface extending from said height of each of said respective hoop stringer to an apex of said joints to increase a cross sectional area of said hoop stringers at said joints for retaining the pressurized materials in said tank.