JPS59135945U - 二段内圧逃し機構付のマンホ−ル蓋 - Google Patents

二段内圧逃し機構付のマンホ−ル蓋

Info

Publication number
JPS59135945U
JPS59135945U JP2443383U JP2443383U JPS59135945U JP S59135945 U JPS59135945 U JP S59135945U JP 2443383 U JP2443383 U JP 2443383U JP 2443383 U JP2443383 U JP 2443383U JP S59135945 U JPS59135945 U JP S59135945U
Authority
JP
Japan
Prior art keywords
internal pressure
pressure relief
lid
manhole cover
receiving frame
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
JP2443383U
Other languages
English (en)
Japanese (ja)
Other versions
JPS6220523Y2 (enrdf_load_stackoverflow
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 JP2443383U priority Critical patent/JPS59135945U/ja
Publication of JPS59135945U publication Critical patent/JPS59135945U/ja
Application granted granted Critical
Publication of JPS6220523Y2 publication Critical patent/JPS6220523Y2/ja
Granted legal-status Critical Current

Links

JP2443383U 1983-02-23 1983-02-23 二段内圧逃し機構付のマンホ−ル蓋 Granted JPS59135945U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2443383U JPS59135945U (ja) 1983-02-23 1983-02-23 二段内圧逃し機構付のマンホ−ル蓋

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2443383U JPS59135945U (ja) 1983-02-23 1983-02-23 二段内圧逃し機構付のマンホ−ル蓋

Publications (2)

Publication Number Publication Date
JPS59135945U true JPS59135945U (ja) 1984-09-11
JPS6220523Y2 JPS6220523Y2 (enrdf_load_stackoverflow) 1987-05-25

Family

ID=30155475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2443383U Granted JPS59135945U (ja) 1983-02-23 1983-02-23 二段内圧逃し機構付のマンホ−ル蓋

Country Status (1)

Country Link
JP (1) JPS59135945U (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151958U (ja) * 1983-03-28 1984-10-11 日昭興産株式会社 マンホ−ル蓋構造

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS558721U (enrdf_load_stackoverflow) * 1978-06-27 1980-01-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS558721U (enrdf_load_stackoverflow) * 1978-06-27 1980-01-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151958U (ja) * 1983-03-28 1984-10-11 日昭興産株式会社 マンホ−ル蓋構造

Also Published As

Publication number Publication date
JPS6220523Y2 (enrdf_load_stackoverflow) 1987-05-25

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