US 12,422,102 B1
Boss with inverted neck
Brian C. Yeggy, Lincoln, NE (US)
Assigned to HEXAGON TECHNOLOGY AS, Alesund (NO)
Filed by HEXAGON TECHNOLOGY AS, Alesund (NO)
Filed on Mar. 31, 2022, as Appl. No. 17/710,222.
Claims priority of provisional application 63/184,435, filed on May 5, 2021.
Int. Cl. F17C 13/04 (2006.01); F17C 1/00 (2006.01)
CPC F17C 13/04 (2013.01) [F17C 1/00 (2013.01); F17C 2203/0604 (2013.01); F17C 2205/0305 (2013.01); F17C 2205/0323 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pressure vessel comprising:
a composite wall having a dome end and comprising:
an outer shell;
an inner liner disposed within the outer shell; and
a port in the wall at the dome end through which fluid may be communicated between an exterior of the pressure vessel and an interior of the pressure vessel; and
a boss disposed at the port, wherein the boss does not extend exteriorly past an innermost surface of the shell at the port, the boss comprising:
a neck projecting interiorly into the pressure vessel;
a flange extending radially outward from the neck, wherein an exterior face of the flange contacts the outer shell; and
a bore extending through the neck and flange;
wherein the neck comprises an end surface and an interiorly extending surface disposed between the flange and the end surface, wherein the end surface comprises an inner radial boundary at the bore and an outer radial periphery at the interiorly extending surface;
wherein the liner contacts the flange and does not contact the interiorly extending surface of the neck.