Abrégé

A method of manufacturing a double-walled elbow pipe segment, comprising the steps of: (a) providing an inner pipe member; (b) providing at least one first support member, and positioning said at least one first support member coaxially over said inner pipe member; (c) providing an outer pipe member and slidably positioning said assembled inner pipe member and said at least one first support member within said outer pipe member such that said at least one first support member is supportingly engaged with an outer surface of said inner pipe member and an inner surface of said outer pipe member, and (d) bending a pipe assembly of said inner pipe member, said at least one first support member and said outer pipe member into at least one first elbow section of a predetermined first angle and in a predetermined first direction between an upstream end portion and a downstream end portion of said pipe assembly.

Classes IPC  ?

• F16L 9/18 - Tuyaux à double paroiTuyaux à canaux multiples ou assemblages de tuyaux
• B21C 37/15 - Fabrication de tubes de formes particulièresFabrication de garnitures de tubes
• B21D 7/03 - Appareils comportant des moyens pour maintenir la forme du profilé
• F16L 43/00 - CoudesSiphons

Abrégé

A method of manufacturing a double-walled elbow pipe segment, comprising the steps of: (a) providing an inner pipe member; (b) providing at least one first support member, and positioning said at least one first support member coaxially over said inner pipe member; (c) providing an outer pipe member and slidably positioning said assembled inner pipe member and said at least one first support member within said outer pipe member such that said at least one first support member is supportingly engaged with an outer surface of said inner pipe member and an inner surface of said outer pipe member, and (d) bending a pipe assembly of said inner pipe member, said at least one first support member and said outer pipe member into at least one first elbow section of a predetermined first angle and in a predetermined first direction between an upstream end portion and a downstream end portion of said pipe assembly.

Classes IPC  ?

• B21D 7/024 - Cintrage des barres, profilés ou tubes sur un organe de formage fixeCintrage des barres, profilés ou tubes par utilisation d'un organe de formage ou d'une butée oscillante par un organe de formage oscillant
• B21D 7/03 - Appareils comportant des moyens pour maintenir la forme du profilé
• B21D 9/01 - Cintrage des tubes par utilisation de mandrins ou d'organes analogues le mandrin étant flexible et en prise avec toute la longueur du tube
• B21D 39/04 - Utilisation de procédés permettant d'assembler des objets ou des parties d'objets, p. ex. revêtement par des tôles, autrement que par placageDispositifs de mandrinage des tubes des tubes avec des tubesUtilisation de procédés permettant d'assembler des objets ou des parties d'objets, p. ex. revêtement par des tôles, autrement que par placageDispositifs de mandrinage des tubes des tubes avec des barres
• B21D 51/10 - Fabrication d'objets creux caractérisés par la structure des objets d'objets coniques ou cylindriques
• B29C 53/08 - Cintrage ou pliage de tubes
• B29C 53/82 - Noyaux ou mandrins
• B21C 37/15 - Fabrication de tubes de formes particulièresFabrication de garnitures de tubes
• B21D 9/07 - Cintrage des tubes par utilisation de mandrins ou d'organes analogues coopérant avec des organes de formage avec un ou plusieurs organes de formage oscillants, en prise avec les seules extrémités du tube