JPS5820720Y2 - グレ−テイングを有する換気孔の自動開閉装置 - Google Patents

グレ−テイングを有する換気孔の自動開閉装置

Info

Publication number
JPS5820720Y2
JPS5820720Y2 JP283379U JP283379U JPS5820720Y2 JP S5820720 Y2 JPS5820720 Y2 JP S5820720Y2 JP 283379 U JP283379 U JP 283379U JP 283379 U JP283379 U JP 283379U JP S5820720 Y2 JPS5820720 Y2 JP S5820720Y2
Authority
JP
Japan
Prior art keywords
packet
hole
water
grating
ventilation
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.)
Expired
Application number
JP283379U
Other languages
English (en)
Japanese (ja)
Other versions
JPS55106300U (enExample
Inventor
勉 祖父江
勝二郎 林
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.)
Osaka Gas Co Ltd
Takaoka Toko Co Ltd
Original Assignee
Osaka Gas Co Ltd
Takaoka Electric Mfg Co 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 Osaka Gas Co Ltd, Takaoka Electric Mfg Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP283379U priority Critical patent/JPS5820720Y2/ja
Publication of JPS55106300U publication Critical patent/JPS55106300U/ja
Application granted granted Critical
Publication of JPS5820720Y2 publication Critical patent/JPS5820720Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Air-Flow Control Members (AREA)
JP283379U 1979-01-17 1979-01-17 グレ−テイングを有する換気孔の自動開閉装置 Expired JPS5820720Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP283379U JPS5820720Y2 (ja) 1979-01-17 1979-01-17 グレ−テイングを有する換気孔の自動開閉装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP283379U JPS5820720Y2 (ja) 1979-01-17 1979-01-17 グレ−テイングを有する換気孔の自動開閉装置

Publications (2)

Publication Number Publication Date
JPS55106300U JPS55106300U (enExample) 1980-07-24
JPS5820720Y2 true JPS5820720Y2 (ja) 1983-04-30

Family

ID=28806254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP283379U Expired JPS5820720Y2 (ja) 1979-01-17 1979-01-17 グレ−テイングを有する換気孔の自動開閉装置

Country Status (1)

Country Link
JP (1) JPS5820720Y2 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953382A (zh) * 2014-04-22 2014-07-30 扬州市江隆矿业设备有限公司 泄压式自动复位风井防爆盖

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953382A (zh) * 2014-04-22 2014-07-30 扬州市江隆矿业设备有限公司 泄压式自动复位风井防爆盖

Also Published As

Publication number Publication date
JPS55106300U (enExample) 1980-07-24

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