US 12,129,966 B2
Method for producing a barrier layer of a pressure vessel, and pressure vessel
Hans-Ulrich Stahl, Munich (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 17/593,916
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed Mar. 17, 2020, PCT No. PCT/EP2020/057173
§ 371(c)(1), (2) Date Sep. 28, 2021,
PCT Pub. No. WO2020/193262, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 10 2019 107 983.7 (DE), filed on Mar. 28, 2019.
Prior Publication US 2022/0196207 A1, Jun. 23, 2022
Int. Cl. F17C 1/16 (2006.01); F17C 1/02 (2006.01)
CPC F17C 1/16 (2013.01) [F17C 1/02 (2013.01); F17C 2201/0109 (2013.01); F17C 2203/0604 (2013.01); F17C 2203/0636 (2013.01); F17C 2203/066 (2013.01); F17C 2203/0663 (2013.01); F17C 2203/0695 (2013.01); F17C 2221/033 (2013.01); F17C 2270/0168 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for the production of a barrier layer of a pressure vessel having an internal volume, comprising the steps of:
generating a pressure difference between the internal volume and an exterior surrounding of the pressure vessel; and
applying the barrier layer to an interior surface of the pressure vessel while the pressure difference is being maintained such that the barrier layer is under compression in one or both of an axial direction and a circumferential direction when the pressure vessel is not pressurized.