公开(公告)号：US06565507B2

公开(公告)日：2003-05-20

申请号：US09950653

申请日：2001-09-13

Applicant: Kouichi Kamata ,  Haruo Akiba ,  Masanori Kimura ,  Kouichi Muraki

Inventor： Kouichi Kamata ,  Haruo Akiba ,  Masanori Kimura ,  Kouichi Muraki

IPC: A61B100

CPC classification number: B29D23/001 ,  A61B1/018 ,  B29C47/0021 ,  B29C47/0023 ,  B29C47/0026 ,  B29C47/0038 ,  B29C47/0064 ,  B29C47/021 ,  B29C47/065 ,  B29C53/385 ,  B29C53/50 ,  B29C53/562 ,  B29C53/68 ,  B29C61/006 ,  B29C2793/009 ,  B29K2023/06 ,  B29K2027/12 ,  B29K2027/18 ,  B29K2075/00 ,  B29K2077/00 ,  B29K2105/0836 ,  B29K2305/00 ,  B29K2705/00 ,  B29K2995/0049 ,  B29K2995/0067 ,  B29K2995/0073 ,  B29L2009/00 ,  B29L2023/007 ,  F16L11/085

Abstract: A flexible tube having a laminated multi-layer structure including an outer layer composed of a main tube body layer formed of thermoplastic synthetic resin in a predetermined thickness and a reinforcing layer provided on the inner side of the main tube body layer, and an inner layer formed of a thin film sheet of air tight and low friction material. The inner layer is formed by rolling an elongated strip of a thin film sheet into a tubular form such that opposite lateral sides of the thin film sheet are overlapped one on the other to provide a thick wall portion extending longitudinally of and at one angular position of the inner layer.