# US 8,464,893 B2 · Pressure container and method of producing the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,464,893 B2 - Document ID: US8464893B2 - Status: Granted - Kind: B2 - Application number: 11/919,037 - Filed: 2006-06-06 - Published: 2009-03-19 - Granted: 2013-06-18 - Earliest claimed: 2005-06-06 - Assignees: Toyota Jidosha Kabushiki Kaisha - Applicants: Yasuyuki Iida; Natsuhiko Katahira; Koichi Takeuchi - Inventors: Yasuyuki Iida; Natsuhiko Katahira; Koichi Takeuchi - Web page: https://patentgrep.com/patent/US8464893B2 ## CPC - F16J 12/00: Pressure vessels in general (covers therefor F16J13/00; for particular applications, see the relevant subclasses, e.g. B01J, F17C, G21C) - B29C 70/086: {and with one or more layers of pure plastics material, e.g. foam layers (applying a non-preformed coating, e.g. a gel-coat, B29C37/0025; with foam blocks B29C70/86)} - B29C 70/86: Incorporated in coherent impregnated reinforcing layers, {e.g. by winding} - F17C 1/06: built-up from wound-on bands or filamentary material, e.g. wires - F17C 1/16: constructed of plastics materials {(shaping of plastics B29C)} - B29L 2031/7156: {Pressure vessels} - F17C 2201/0104: cylindrical - F17C 2201/0109: with exteriorly curved end-piece - F17C 2201/035: with substantially horizontal main axis - F17C 2201/056: Small (<1 m3) - F17C 2203/013: in the vessel, e.g. columns - F17C 2203/0604: Liners - F17C 2203/0619: with two layers - F17C 2203/0646: Aluminium - F17C 2203/066: Plastics - F17C 2203/0663: in form of fibers or filaments - F17C 2203/0665: radially wound - F17C 2203/0668: axially wound - F17C 2203/067: helically wound - F17C 2203/0673: Polymers - F17C 2205/0305: Bosses, e.g. boss collars - F17C 2205/0323: Valves - F17C 2205/0397: on both sides of the pressure vessel - F17C 2209/2109: Moulding - F17C 2209/2118: by injection - F17C 2209/2154: Winding - F17C 2209/221: Welding - F17C 2260/011: Improving strength - F17C 2260/012: Reducing weight - F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - 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) - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A pressure container has an inner shell with a pair of fittings and a reinforcement layer formed around the inner shell, and is configured so that a reinforcement member is attachable to the pair of fittings in a process of forming the reinforcement layer and a functional component which performs a predetermined function is also attachable to the fittings. This can allow the reinforcement member to prevent expanding deformation of the pressure container in production of the pressure container, and can ensure effective use of openings after removal of the reinforcement member. ## Claims ### Claim 1 A pressure container having an inner shell and a reinforcement layer formed around the inner shell, comprising: a deformation restricting part to which a reinforcement member is attachable in a process of forming the reinforcement layer and which restricts expanding deformation of the inner shell by interaction with the reinforcement member, the reinforcement member attached in the forming process being removed after the pressure container is completed, wherein the reinforcement member and the deformation restricting part restrict expanding deformation in a lengthwise direction of the pressure container while permitting contracting deformation, and wherein the reinforcement member is slidable with respect to the deformation restricting part at the time of the process of winding fibers to form the reinforcement layer. ### Claim 2 (depends on 1) The pressure container according to claim 1, wherein the deformation restricting part is a pair of fittings provided at the inner shell. ### Claim 3 (depends on 2) The pressure container according to claim 2, wherein at least one of the pair of fittings has a coupling part to couple the reinforcement member thereto. ### Claim 4 (depends on 3) The pressure container according to claim 3, wherein the coupling part is configured so as to detachably couple the fittings and the reinforcement member together. ### Claim 5 (depends on 4) The pressure container according to claim 4, wherein the coupling part is a screw structure for the fittings and the reinforcement member. ### Claim 6 (depends on 4) The pressure container according to claim 4, wherein the coupling part is configured so that a functional component which performs a predetermined function is attachable thereto. ### Claim 7 (depends on 1) The pressure container according to claim 1, wherein there are a pair of deformation restricting parts, one end side of the reinforcement member and one of the deformation restricting parts have threaded structures screwable to each other, and the other end side of the reinforcement member and the other one of the deformation restricting parts have slidable structures which can ensure relative displacement while keeping an airtight state. ### Claim 8 (depends on 6) The pressure container according to claim 6, wherein the functional component is a seal component provided at at least one of the pair of fittings to seal the pressure container. ### Claim 9 (depends on 6) The pressure container according to claim 6, wherein the functional component is a pipe provided at at least one of the pair of fittings to connect an interior of the pressure container to an outside thereof. ### Claim 10 (depends on 6) The pressure container according to claim 6, wherein the functional component is an assembly of a pipe and a valve member, which are provided at at least one of the pair of fittings to connect an interior of the pressure container to an outside thereof. ### Claim 11 (depends on 6) The pressure container according to claim 6, wherein the functional component is a measuring component provided at at least one of the pair of fittings to detect a physical amount relating to a fluid state in the pressure container. ### Claim 12 A method of producing a pressure container having an inner shell with a fitting and a reinforcement layer formed around the inner shell, comprising: forming the reinforcement layer after providing a reinforcement member, which is slidable with respect to the inner shell at the time of the process of winding fibers to form the reinforcement layer and restricts expanding deformation in a lengthwise direction of the pressure container while permitting contracting deformation at the fitting at the time of forming the reinforcement layer around the inner shell after forming the inner shell; removing the reinforcement member from the fitting after forming the reinforcement layer; and attaching a functional component which performs a predetermined function to the fitting with the reinforcement member removed therefrom. ### Claim 13 (depends on 5) The pressure container according to claim 5, wherein the coupling part is configured so that a functional component which performs a predetermined function is attachable thereto.