Title:
FLEXIBLE DRAIN PIPE
Document Type and Number:
Japanese Patent JP3517782
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a flexible drain pipe having strength, flexibility, a smooth drainage property, and a good sealing property of a hose body and a pipe joint, capable of improving durability.
SOLUTION: The drain pipe H1 includes a hose body 7, a pipe joint 11, a cylinder-shaped connecting ring 18 for joining end parts 7a, 7b of the hose body and the pipe joint 11, and a sealing material 25. The hose body 7 includes an inner tube part 8 formed of a cylinder-shaped soft synthetic resin having a smooth inner circumferential surface, and a bellows-shaped outer tube part 9 formed of hard synthetic resin for providing rigidity in a radius direction to the inner tube part 8 while maintaining flexibility of the inner tube part 8. The inner tube part 8 is formed of plasticizer-less soft synthetic resin.
Inventors:
Kusuhara, Tomio
Application Number:
JP2000219802A
Publication Date:
April 12, 2004
Filing Date:
July 19, 2000
Export Citation:
Assignee:
NIPPON TECHNO:KK
International Classes:
E03C1/12; E03F3/04; F16L11/11; F16L33/00; F16L33/28; (IPC1-7): F16L11/11; E03C1/12; E03F3/04; F16L33/00; F16L33/28
Attorney, Agent or Firm:
飯田 昭夫 （外１名）