# US 2023/0408031 A1 · Cryogenic tank > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0408031 A1 - Document ID: US20230408031A1 - Status: Published application - Kind: A1 - Application number: 18/210,201 - Filed: 2023-06-15 - Published: 2023-12-21 - Earliest claimed: 2022-06-17 - Assignees: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude - Applicants: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude - Inventors: Guillaume BOYE; Loic JEUNESSE; Florent CORDEAU - Web page: https://patentgrep.com/patent/US20230408031A1 ## CPC - F17C 3/08: by vacuum spaces, e.g. Dewar flask (for household use A47J41/02) - F17C 2201/0109: with exteriorly curved end-piece - F17C 2201/0123: with variable thickness or diameter - F17C 2201/035: with substantially horizontal main axis - F17C 2201/054: medium (>1 m3) - F17C 2203/012: on or in the wall, e.g. ribs - F17C 2203/0391: by vacuum - F17C 2203/0629: Two walls - F17C 2203/0636: Metals - F17C 2209/221: Welding - F17C 2209/232: of walls - F17C 2221/012: Hydrogen - F17C 2221/017: Helium - F17C 2223/0161: cryogenic, e.g. LNG, GNL, PLNG - F17C 2223/033: Small pressure, e.g. for liquefied gas - F17C 2260/012: Reducing weight - F17C 2270/0171: Trucks - Y02E 60/32: Hydrogen storage - F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The invention relates to a cryogenic tank comprising an inner shell intended to contain the cryogenic fluid, an outer shell arranged around the inner shell and delimiting a space between the two shells under vacuum, the outer shell extending in a longitudinal direction and having a plurality of reinforcing ribs distributed in planes that are perpendicular to the longitudinal direction, the ribs being formed by deformations, for example by knurling, on one and the same wall of the outer shell, wherein the tank also includes at least one reinforcing element for reinforcing at least part of at least one of the ribs, the reinforcing element comprising a strip rigidly connected to the two portions of the wall situated at the base and on either side of the rib. ## Claims ### Claim 1 A cryogenic tank, in particular for transporting cryogenic fluid comprising an inner shell made of a metal material or alloy and configured to contain the cryogenic fluid, an outer shell made of a metal material or alloy, arranged around the inner shell and delimiting a space between the two shells, said space being under vacuum, the outer shell extending in a longitudinal direction and comprising a plurality of reinforcing ribs distributed in planes that are perpendicular to the longitudinal direction, the ribs being formed by deformations on one and the same wall of the outer shell, wherein the tank further comprises at least one reinforcing element for reinforcing at least part of at least one of the ribs, the reinforcing element comprising a strip rigidly connected to the two portions of the wall situated at the base and on either side of the rib. ### Claim 2 (depends on 1) The tank according to claim 1, wherein the strip is made of a metal material or alloy and is welded to the outer shell. ### Claim 3 (depends on 1) The tank according to claim 1, wherein the ribs extend over all or part of the circumference of the outer shell and in that at least part of the ribs is provided with at least one strip. ### Claim 4 (depends on 1) The tank according to claim 1, wherein at least part of the ribs is provided with a plurality of discrete strips distributed over part of the circumference of the shell, for example three strips. ### Claim 5 (depends on 4) The tank according to claim 4, wherein said strips extend in a plane that is perpendicular to the longitudinal direction over 40 to 80% of the circumference of the outer shell. ### Claim 6 (depends on 1) The tank according to claim 1, wherein the one or more strips have a width, measured in a direction that is parallel to the longitudinal direction, of between one and three times the width of the rib. ### Claim 7 (depends on 1) The tank according to claim 1, wherein the first shell and the second shell have a cylindrical general shape with a circular cross section and extending in the longitudinal direction and a circular cross section, the longitudinal axis being oriented horizontally when the tank is in the transport or use configuration. ### Claim 8 (depends on 1) The tank according to claim 1, wherein the ribs protrude from the exterior surface of the outer shell.