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JPS5662695A - Method for enlarging inside diameter of corrugated pipe - Google Patents

Method for enlarging inside diameter of corrugated pipe

Info

Publication number
JPS5662695A
JPS5662695A JP13890979A JP13890979A JPS5662695A JP S5662695 A JPS5662695 A JP S5662695A JP 13890979 A JP13890979 A JP 13890979A JP 13890979 A JP13890979 A JP 13890979A JP S5662695 A JPS5662695 A JP S5662695A
Authority
JP
Japan
Prior art keywords
pipe
corrugated pipe
inside diameter
corrugated
enlarging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13890979A
Other languages
Japanese (ja)
Inventor
Ikuo Shigetoshi
Shotaro Yoshida
Tsuneaki Motai
Michio Takaoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Ltd
Original Assignee
Fujikura Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujikura Ltd filed Critical Fujikura Ltd
Priority to JP13890979A priority Critical patent/JPS5662695A/en
Publication of JPS5662695A publication Critical patent/JPS5662695A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

PURPOSE: To enlarge the inside diameter of the corrugated pipe easily with a simple device, by inserting spirally a small flexible pipe closed at one end to the end part of the corrugated pipe and by applying liquid pressure to this pipe.
CONSTITUTION: In the method of enlarging the inside diameter of corrugated pipe 10, flexible pipe 30 consisting of copper and so on and having a round or elliptic sectional from with tip 32 closed is inserted spirally between mountains 12 of corrugated pipe 10 and cable core 20. Next, the other end of pipe 30 is connected to oil pressure source 40 to apply oil pressure to pipe 30. Pipe 30 tries to extend in the radius direction at the Bourdon tube to enlarge the space between cable core 20 and the corrugated pipe. Thus, the inside diameter of corrugated pipe 10 can be enlarged by the simple method.
COPYRIGHT: (C)1981,JPO&Japio
JP13890979A 1979-10-26 1979-10-26 Method for enlarging inside diameter of corrugated pipe Pending JPS5662695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13890979A JPS5662695A (en) 1979-10-26 1979-10-26 Method for enlarging inside diameter of corrugated pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13890979A JPS5662695A (en) 1979-10-26 1979-10-26 Method for enlarging inside diameter of corrugated pipe

Publications (1)

Publication Number Publication Date
JPS5662695A true JPS5662695A (en) 1981-05-28

Family

ID=15232964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13890979A Pending JPS5662695A (en) 1979-10-26 1979-10-26 Method for enlarging inside diameter of corrugated pipe

Country Status (1)

Country Link
JP (1) JPS5662695A (en)

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