JPS6220523Y2 - - Google Patents

Info

Publication number
JPS6220523Y2
JPS6220523Y2 JP1983024433U JP2443383U JPS6220523Y2 JP S6220523 Y2 JPS6220523 Y2 JP S6220523Y2 JP 1983024433 U JP1983024433 U JP 1983024433U JP 2443383 U JP2443383 U JP 2443383U JP S6220523 Y2 JPS6220523 Y2 JP S6220523Y2
Authority
JP
Japan
Prior art keywords
lid
pressure relief
internal pressure
locking
cover
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
JP1983024433U
Other languages
English (en)
Japanese (ja)
Other versions
JPS59135945U (ja
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 filed Critical
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 JPS59135945U (ja) 1984-09-11
JPS6220523Y2 true JPS6220523Y2 (en]) 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 (en])

Families Citing this family (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

Family Cites Families (1)

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

Also Published As

Publication number Publication date
JPS59135945U (ja) 1984-09-11

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