JPS5246563A - Pair tube having an insulation void and its manufacturing process - Google Patents

Pair tube having an insulation void and its manufacturing process

Info

Publication number
JPS5246563A
JPS5246563A JP50122995A JP12299575A JPS5246563A JP S5246563 A JPS5246563 A JP S5246563A JP 50122995 A JP50122995 A JP 50122995A JP 12299575 A JP12299575 A JP 12299575A JP S5246563 A JPS5246563 A JP S5246563A
Authority
JP
Japan
Prior art keywords
manufacturing process
pair tube
insulation void
void
insulation
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.)
Granted
Application number
JP50122995A
Other languages
Japanese (ja)
Other versions
JPS5938096B2 (en
Inventor
Masanobu Azuma
Takashi Hiyama
Masakatsu Endo
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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP50122995A priority Critical patent/JPS5938096B2/en
Publication of JPS5246563A publication Critical patent/JPS5246563A/en
Publication of JPS5938096B2 publication Critical patent/JPS5938096B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Duct Arrangements (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Thermal Insulation (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

PURPOSE: To form an insulation void between both tubes of a pair tube simultaneously at the time of extrusion.
COPYRIGHT: (C)1977,JPO&Japio
JP50122995A 1975-10-13 1975-10-13 Bear tube with heat-insulating cavity and its manufacturing method Expired JPS5938096B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50122995A JPS5938096B2 (en) 1975-10-13 1975-10-13 Bear tube with heat-insulating cavity and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50122995A JPS5938096B2 (en) 1975-10-13 1975-10-13 Bear tube with heat-insulating cavity and its manufacturing method

Publications (2)

Publication Number Publication Date
JPS5246563A true JPS5246563A (en) 1977-04-13
JPS5938096B2 JPS5938096B2 (en) 1984-09-13

Family

ID=14849664

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50122995A Expired JPS5938096B2 (en) 1975-10-13 1975-10-13 Bear tube with heat-insulating cavity and its manufacturing method

Country Status (1)

Country Link
JP (1) JPS5938096B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS554598A (en) * 1978-06-22 1980-01-14 Bolt Associates Inc Method and apparatus for monitoring real time of air gun shot
JPS5512137U (en) * 1978-07-07 1980-01-25
JPS55160249U (en) * 1979-05-07 1980-11-18
JPS55179359U (en) * 1979-06-12 1980-12-23
JPS5922736A (en) * 1982-07-30 1984-02-06 Sekisui Chem Co Ltd Manufacture of protective cover to piping for air conditioning

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4710350U (en) * 1971-02-23 1972-10-06
JPS5068286U (en) * 1973-10-22 1975-06-18
JPS5080067U (en) * 1973-11-21 1975-07-10

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4710350U (en) * 1971-02-23 1972-10-06
JPS5068286U (en) * 1973-10-22 1975-06-18
JPS5080067U (en) * 1973-11-21 1975-07-10

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS554598A (en) * 1978-06-22 1980-01-14 Bolt Associates Inc Method and apparatus for monitoring real time of air gun shot
JPS5512137U (en) * 1978-07-07 1980-01-25
JPS55160249U (en) * 1979-05-07 1980-11-18
JPS55179359U (en) * 1979-06-12 1980-12-23
JPS5922736A (en) * 1982-07-30 1984-02-06 Sekisui Chem Co Ltd Manufacture of protective cover to piping for air conditioning

Also Published As

Publication number Publication date
JPS5938096B2 (en) 1984-09-13

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