# US 7,743,940 B2 · Double-walled container having supports for positioning the inner and outer walls > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,743,940 B2 - Document ID: US7743940B2 - Status: Granted - Kind: B2 - Application number: 10/545,747 - Filed: 2004-02-18 - Published: 2006-08-03 - Granted: 2010-06-29 - Earliest claimed: 2003-02-18 - Assignees: Magna Steyr Fahrezeugtechnik AG & Co. KG - Inventors: Klaus Brunnhofer - Web page: https://patentgrep.com/patent/US7743940B2 ## CPC - F17C 3/06: on the inner surface, i.e. in contact with the stored fluid - F17C 1/06: built-up from wound-on bands or filamentary material, e.g. wires - F17C 3/08: by vacuum spaces, e.g. Dewar flask (for household use A47J41/02) - F17C 1/00: Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge (pressurised apparatus for purposes other than storage, see the relevant subclasses such as A62C, B05B; associated with vehicles, see the appropriate subclass of classes B60 - B64; pressure vessels in general F16J12/00 {; autoclaves B01J3/04; tank vehicles B60P3/22; railway tank wagons for carrying fluent materials B61D5/00; accumulators for supplying fluid under pressure F15B1/04; liquefied gas stoves F24C3/00}) - F17C 2201/0104: cylindrical - F17C 2201/0157: Polygonal - F17C 2201/054: medium (>1 m3) - F17C 2203/014: Suspension means - F17C 2203/015: Bars - F17C 2203/0391: by vacuum - F17C 2203/0629: Two walls - F17C 2203/0663: in form of fibers or filaments - F17C 2205/0305: Bosses, e.g. boss collars - F17C 2209/2154: Winding - F17C 2209/227: by adhesive means - F17C 2221/011: Oxygen - F17C 2221/012: Hydrogen - F17C 2221/014: Nitrogen - F17C 2221/017: Helium - F17C 2223/0161: cryogenic, e.g. LNG, GNL, PLNG - F17C 2223/033: Small pressure, e.g. for liquefied gas - F17C 2270/0168: by vehicles - F17C 2270/0194: for use under microgravity conditions, e.g. space - Y02E 60/32: Hydrogen storage - Y10S 220/918: Spacing element for separating the walls of a spaced-wall container - 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 - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A container for cryogenic liquids comprises an inner container and an outer container which are positioned with respect to each other and are thermally decoupled from each other by a vacuum insulation layer. In order, with the lowest possible weight and lowest possible costs in series production, to achieve the best possible heat insulation, the inner container and the outer container are in each case composed of prepared fiber-reinforced elements which are in each case wrapped up together with a filament and are thereby connected to one another, and supports which are also composed of a fiber-reinforced plastic are provided on the inner container for the relative positioning of the inner container with respect to the outer container. ## Claims ### Claim 1 A vessel for cryogenic liquids, comprising an inner container and an outer container which are positioned with respect to each other and are thermally decoupled by a vacuum insulation layer, wherein the inner container and the outer container comprise parts composed of prepared, fiber-reinforced elements which are in each case wrapped up together with a filament, wherein the elements of the inner container and the elements of the outer container in each case are thereby connected to one another, and wherein supports comprising a fiber-reinforced plastic are provided on the inner container (1) for the relative positioning of the inner container (1) with respect to the outer container, the inner container and outer container parts adjoin one another along an interface and are wrapped up together with the filament, wherein the parts of the inner container and the parts of the outer container have at the interface cylindrical mating surfaces suitable for an adhesive bond, the inner container and outer container in each case comprising a cylindrical central part and a respective end dome on both sides, wherein the cylindrical central part and end domes are assembled in each case from prepared, fiber-reinforced elements (14) and are connected to one another at the interface situated in planes perpendicular to a longitudinal axis of the cylindrical central part, and, wherein, in the case of the inner container, the cylindrical mating surfaces intended for an adhesive bond are arranged in such a manner that the cylindrical central part overlaps the domes on the inside and, in the case of the outer container, the cylindrical central part overlaps the domes on the outside, wherein the supports on the inner container are individual collars built up by repeatedly wrapping strips of fiber-reinforced epoxy resin around the cylindrical central part of the inner container. ### Claim 2 (depends on 1) The vessel as claimed in claim 1, wherein elements of the inner container comprises carbon fibers and the outer container comprises glass fibers, in each case in an epoxy resin matrix. ### Claim 3 (depends on 2) The vessel as claimed in claim 2, wherein the supports comprise fiber-reinforced plastic which are connected to the elements or are integral therewith. ### Claim 4 (depends on 2) The vessel as claimed in claim 2, wherein the supports are supports which are fitted on the inner container and are wrapped up together with the elements the filament. ### Claim 5 (depends on 1) The vessel as claimed in claim 1, wherein the domes have a centering slug in an intercepting point with their axis of symmetry. ### Claim 6 (depends on 5) The vessel as claimed in claim 5, wherein the centering slug has a central, longitudinally directed aperture.