MULTI-STAGE BEND FOR PIPING, AND CONNECTING METHOD FOR RESIN PIPE

• Main Authors: SUGIMOTO TAKAFUMI, OKIAYU TAKUJI, NISHIKATA NOBUHIRO, INOUE YASUYUKI, IMAGAWA TAKASHI, KASUGAI SHINJI
• Format: Patent
• Language: English
• Published: 06.07.2006
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a multi-stage bend for piping, which can form a coupling member having a plurality of bending angles from one kind of a member. SOLUTION: The multi-stage bend 1 for piping has a plurality of straight pipe sections 12a to 12e, and a plurality of bent sections 11a, 11b, 11c, and 11d. The adjacent straight pipe sections 12 are bent pipe-shaped joint members connected so that their center axes are crossed via the bent sections 11. In an other multi-stage bend 4, an electrically fusion-welded joint 5, in which a socket 51 inserted with a resin pipe 3 is provided and an electric heat wire 52 is buried in an inner surface of the socket, can be firmly fixed into the straight pipe section at one end. COPYRIGHT: (C)2006,JPO&NCIPI