JPS6373688U - - Google Patents
Info
- Publication number
- JPS6373688U JPS6373688U JP16925886U JP16925886U JPS6373688U JP S6373688 U JPS6373688 U JP S6373688U JP 16925886 U JP16925886 U JP 16925886U JP 16925886 U JP16925886 U JP 16925886U JP S6373688 U JPS6373688 U JP S6373688U
- Authority
- JP
- Japan
- Prior art keywords
- rope
- sealed shell
- existing pipeline
- detection device
- detected
- 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
Links
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 2
- 239000010425 asbestos Substances 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986169258U JPH0515115Y2 (https=) | 1986-11-04 | 1986-11-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986169258U JPH0515115Y2 (https=) | 1986-11-04 | 1986-11-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6373688U true JPS6373688U (https=) | 1988-05-17 |
| JPH0515115Y2 JPH0515115Y2 (https=) | 1993-04-21 |
Family
ID=31102896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986169258U Expired - Lifetime JPH0515115Y2 (https=) | 1986-11-04 | 1986-11-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0515115Y2 (https=) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5168254A (en) * | 1974-12-10 | 1976-06-12 | Michiaki Karita | Hikinzokusei chichu maisetsukan no tanchi hoho |
| JPS5583869A (en) * | 1978-12-20 | 1980-06-24 | Nippon Telegr & Teleph Corp <Ntt> | Antenna unit of transmitter for search of vacant duct buried in earth |
| JPS61170689A (ja) * | 1985-01-25 | 1986-08-01 | Tokyo Gas Co Ltd | 埋設鋳鉄管の継手位置検知装置 |
-
1986
- 1986-11-04 JP JP1986169258U patent/JPH0515115Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5168254A (en) * | 1974-12-10 | 1976-06-12 | Michiaki Karita | Hikinzokusei chichu maisetsukan no tanchi hoho |
| JPS5583869A (en) * | 1978-12-20 | 1980-06-24 | Nippon Telegr & Teleph Corp <Ntt> | Antenna unit of transmitter for search of vacant duct buried in earth |
| JPS61170689A (ja) * | 1985-01-25 | 1986-08-01 | Tokyo Gas Co Ltd | 埋設鋳鉄管の継手位置検知装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0515115Y2 (https=) | 1993-04-21 |