JPH0457539U - - Google Patents
Info
- Publication number
- JPH0457539U JPH0457539U JP9958490U JP9958490U JPH0457539U JP H0457539 U JPH0457539 U JP H0457539U JP 9958490 U JP9958490 U JP 9958490U JP 9958490 U JP9958490 U JP 9958490U JP H0457539 U JPH0457539 U JP H0457539U
- Authority
- JP
- Japan
- Prior art keywords
- insulating material
- heat insulating
- manhole
- fitting
- embedded
- 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.)
- Pending
Links
Description
第１図は断熱材ブロツクの平面図、第２図は断
熱材ブロツクを鉄蓋に嵌合した断面図、第１図及
び２図のａは断熱材、第１図及び２図のｂは磁石
片、第２図のｃは鉄蓋。
熱材ブロツクを鉄蓋に嵌合した断面図、第１図及
び２図のａは断熱材、第１図及び２図のｂは磁石
片、第２図のｃは鉄蓋。
Claims (1)
- マンホールの鉄蓋の内側に断熱材ブロツクを嵌
合する場合、接合部材として永久磁石を断熱材に
埋設すること。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9958490U JPH0457539U (ja) | 1990-09-21 | 1990-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9958490U JPH0457539U (ja) | 1990-09-21 | 1990-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0457539U true JPH0457539U (ja) | 1992-05-18 |
Family
ID=31841616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9958490U Pending JPH0457539U (ja) | 1990-09-21 | 1990-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0457539U (ja) |
-
1990
- 1990-09-21 JP JP9958490U patent/JPH0457539U/ja active Pending