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JPS6469885A - Ventilating duct - Google Patents

Ventilating duct

Info

Publication number
JPS6469885A
JPS6469885A JP62227184A JP22718487A JPS6469885A JP S6469885 A JPS6469885 A JP S6469885A JP 62227184 A JP62227184 A JP 62227184A JP 22718487 A JP22718487 A JP 22718487A JP S6469885 A JPS6469885 A JP S6469885A
Authority
JP
Japan
Prior art keywords
main body
air
doubled
wound
free end
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
JP62227184A
Other languages
Japanese (ja)
Other versions
JPH0735868B2 (en
Inventor
Shiroshi Nakamura
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.)
IG Technical Research Inc
Original Assignee
IG Technical Research Inc
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 IG Technical Research Inc filed Critical IG Technical Research Inc
Priority to JP62227184A priority Critical patent/JPH0735868B2/en
Publication of JPS6469885A publication Critical patent/JPS6469885A/en
Publication of JPH0735868B2 publication Critical patent/JPH0735868B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Duct Arrangements (AREA)
  • Thermal Insulation (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

PURPOSE: To provide an air duct which can uniformly release air by winding in partially doubling manner an impermeable film on the outer surface of the main body made of permeable materials formed in a pipe shape, and using this doubling part as a valve mechanism. CONSTITUTION: The main body 1 is formed in pipe shape and is made of permeable materials, and it is so constituted that the air passing through its inner space α can be released into outer space. An impermeable film 2 is wound on the outer surface of the main body 1. The film 2 is partially doubled wound on the outer surface of the main body 1, the doubled part 3 and its neighbor area 1 is not adhered to the main body 1, the end of the doubled part 3 becomes a free end 4. This free end 4 functions as a valve to release the air of the area into α the outer space.
JP62227184A 1987-09-09 1987-09-09 Ventilation duct Expired - Fee Related JPH0735868B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62227184A JPH0735868B2 (en) 1987-09-09 1987-09-09 Ventilation duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62227184A JPH0735868B2 (en) 1987-09-09 1987-09-09 Ventilation duct

Publications (2)

Publication Number Publication Date
JPS6469885A true JPS6469885A (en) 1989-03-15
JPH0735868B2 JPH0735868B2 (en) 1995-04-19

Family

ID=16856805

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62227184A Expired - Fee Related JPH0735868B2 (en) 1987-09-09 1987-09-09 Ventilation duct

Country Status (1)

Country Link
JP (1) JPH0735868B2 (en)

Also Published As

Publication number Publication date
JPH0735868B2 (en) 1995-04-19

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees