JPS59135945U - Manhole cover with two-stage internal pressure relief mechanism - Google Patents

Manhole cover with two-stage internal pressure relief mechanism

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
Japanese (ja)
Other versions
JPS6220523Y2 (en
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/en
Publication of JPS59135945U publication Critical patent/JPS59135945U/en
Application granted granted Critical
Publication of JPS6220523Y2 publication Critical patent/JPS6220523Y2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図はマンホール蓋の断面図、第２図は受枠と蓋部の
裏面図、第３図は蓋部及び内圧逃し蓋が押上げられた状
態のマンホール蓋の断面図を表わす。 １〜２マンホール蓋、２〜受枠、３〜蓋部、４゜１２〜
係止片、５，１３〜係止部、１０〜側壁、１１〜スライ
ダー、１４〜押圧片、１５〜１ン、１６〜押圧部、１７
〜重鐘部、２６〜内圧逃し孔、２１〜内圧逃し蓋、２２
〜係合金具、２３〜係合突起、２４〜透孔、２５〜係合
部、３０．３１〜排水切欠部。FIG. 1 is a sectional view of the manhole cover, FIG. 2 is a back view of the receiving frame and the lid, and FIG. 3 is a sectional view of the manhole cover with the lid and internal pressure relief lid pushed up. 1-2 manhole cover, 2-receiving frame, 3-cover, 4゜12~
Locking piece, 5, 13 - Locking part, 10 - Side wall, 11 - Slider, 14 - Pressing piece, 15 - 1 inch, 16 - Pressing part, 17
~ Heavy bell part, 26 ~ Internal pressure relief hole, 21 ~ Internal pressure relief lid, 22
~Engagement metal fitting, 23~Engagement protrusion, 24~Through hole, 25~Engagement part, 30.31~Drain cutout part.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 受枠と、この受枠に嵌合され常時はロック機構で受枠に
一定距離持上げ可能な状態でロックされ□　　ている蓋
部と、この蓋部の中央に穿設された内圧逃し孔と、この
内圧逃し孔に嵌合される内圧逃し蓋と、この内圧逃し蓋
の下面に立設された係合金具と、前記蓋部の内圧逃し孔
の裏面に配設され係合金具の上方摺動を一定距離で規制
する係合突起部と、から成る内圧逃し機構材のマンホー
ル蓋。A receiving frame, a lid part that is fitted into this receiving frame and is normally locked in a state in which it can be lifted a certain distance to the receiving frame by a locking mechanism, an internal pressure relief hole drilled in the center of this lid part, and this internal pressure relief hole. An internal pressure relief lid that fits into the hole, an engaging metal fitting provided upright on the underside of the internal pressure relief lid, and an engaging metal fitting provided on the back side of the internal pressure relief hole of the lid that allows the upward sliding movement of a certain distance. A manhole cover with an internal pressure relief mechanism consisting of an engaging protrusion that regulates the pressure.
JP2443383U 1983-02-23 1983-02-23 Manhole cover with two-stage internal pressure relief mechanism Granted JPS59135945U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2443383U JPS59135945U (en) 1983-02-23 1983-02-23 Manhole cover with two-stage internal pressure relief mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2443383U JPS59135945U (en) 1983-02-23 1983-02-23 Manhole cover with two-stage internal pressure relief mechanism

Publications (2)

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

Family

ID=30155475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2443383U Granted JPS59135945U (en) 1983-02-23 1983-02-23 Manhole cover with two-stage internal pressure relief mechanism

Country Status (1)

Country Link
JP (1) JPS59135945U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151958U (en) * 1983-03-28 1984-10-11 日昭興産株式会社 Manhole cover structure

Citations (1)

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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114736A (en) * 1975-03-31 1976-10-08 Chugai Ro Kogyo Kaisha Ltd Porous burner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS558721U (en) * 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 (en) * 1983-03-28 1984-10-11 日昭興産株式会社 Manhole cover structure

Also Published As

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

Similar Documents

Publication Publication Date Title
JPS59135945U (en) Manhole cover with two-stage internal pressure relief mechanism
JPS5910350U (en) Manhole cover attachment device
JPS6043929U (en) Filter cover for range hood
JPS58180694U (en) Shield plate mounting device
JPS5944859U (en) Storm door locking device
JPS59107650U (en) Manhole cover raising device
JPS59175569U (en) locking device
JPS5895082U (en) electronic equipment housing
JPS60113676U (en) Small electronic device with cover
JPS60174648U (en) vehicle seat
JPS5910349U (en) Manhole cover hinge structure
JPS58191773U (en) Lock structure of cover in camera housing
JPS6022545U (en) Manhole cover with internal pressure relief mechanism
JPS6137366U (en) door stopper device
JPS59118993U (en) handle device
JPS5948995U (en) Door bag device
JPS6032450U (en) manhole cover
JPS5918519U (en) blind plate
JPS58131678U (en) Operation panel structure
JPS6097985U (en) Drain shelf storage bay window
JPS5893826U (en) Aerosol product content detection device
JPS6128887U (en) Bottom frame mounting device
JPS60138483U (en) Enclosure for enshrining the principal image in a Buddhist altar
JPS5885392U (en) Fixing metal structure for electrical equipment
JPS60180584U (en) Box side plate cover mounting structure