JPS6022545U - 内圧逃し機構付のマンホ−ル蓋 - Google Patents

内圧逃し機構付のマンホ−ル蓋

Info

Publication number
JPS6022545U
JPS6022545U JP11402983U JP11402983U JPS6022545U JP S6022545 U JPS6022545 U JP S6022545U JP 11402983 U JP11402983 U JP 11402983U JP 11402983 U JP11402983 U JP 11402983U JP S6022545 U JPS6022545 U JP S6022545U
Authority
JP
Japan
Prior art keywords
receiving frame
manhole cover
internal pressure
pressure relief
lid
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
JP11402983U
Other languages
English (en)
Japanese (ja)
Other versions
JPS6223884Y2 (OSRAM
Inventor
安部　武治
Original Assignee
日豊金属工業株式会社
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 日豊金属工業株式会社 filed Critical 日豊金属工業株式会社
Priority to JP11402983U priority Critical patent/JPS6022545U/ja
Publication of JPS6022545U publication Critical patent/JPS6022545U/ja
Application granted granted Critical
Publication of JPS6223884Y2 publication Critical patent/JPS6223884Y2/ja
Granted legal-status Critical Current

Links

JP11402983U 1983-07-22 1983-07-22 内圧逃し機構付のマンホ−ル蓋 Granted JPS6022545U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11402983U JPS6022545U (ja) 1983-07-22 1983-07-22 内圧逃し機構付のマンホ−ル蓋

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11402983U JPS6022545U (ja) 1983-07-22 1983-07-22 内圧逃し機構付のマンホ−ル蓋

Publications (2)

Publication Number Publication Date
JPS6022545U true JPS6022545U (ja) 1985-02-16
JPS6223884Y2 JPS6223884Y2 (OSRAM) 1987-06-18

Family

ID=30263744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11402983U Granted JPS6022545U (ja) 1983-07-22 1983-07-22 内圧逃し機構付のマンホ−ル蓋

Country Status (1)

Country Link
JP (1) JPS6022545U (OSRAM)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625524A (en) * 1979-08-07 1981-03-11 Nissho Kosan Kk Hinge structure of lid

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625524A (en) * 1979-08-07 1981-03-11 Nissho Kosan Kk Hinge structure of lid

Also Published As

Publication number Publication date
JPS6223884Y2 (OSRAM) 1987-06-18

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