Title:
TECHNIQUE FOR RENOVATING/REPAIRING EXISTING PIPING
Document Type and Number:
Japanese Patent JPH1177827
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To positively prevent the imperfect adhesion by an adhesive to be used for bonding an inner lining tube from occurring and at the same time, simply perform a treatment for eliminating the imperfect adhesion without the necessity to perform a special operation such as pressure control. SOLUTION: This technique for renovating/repairing existing piping is to connect one of the ends of a flexible resin pipe 10 to one of the ends of an existing ductwork P, then connect a transparent tube to the other end of the flexible resin pipe 10 and cut the inner lining tube of the transparent tube using the other end of the flexible resin pipe 10 as a reference, such a state that the pipe 10 is held, after checking that the inner lining tube is moved forward through the transparent tube. In addition, a fluid introduction device 22 is connected to the end of the flexible resin pipe 10 and the flexible resin pipe 10 is loosened from its holding state to circulate a fluid through the inner lining tube and the fluid introduction device 22.
Inventors:
YAGI SHUICHI
ITAGAKI MASAAKI
MORITA KENJI
ITAGAKI MASAAKI
MORITA KENJI
Application Number:
JP24536797A
Publication Date:
March 23, 1999
Filing Date:
September 10, 1997
Export Citation:
Assignee:
TOKYO GAS CO LTD
International Classes:
F16L55/16; B05C7/08; B29C63/36; B29L9/00; B29L23/00; (IPC1-7): B29C63/36; B05C7/08; F16L55/16
Attorney, Agent or Firm:
Nobujun Kobashi
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