JPS6434584U - - Google Patents
Info
- Publication number
- JPS6434584U JPS6434584U JP12928887U JP12928887U JPS6434584U JP S6434584 U JPS6434584 U JP S6434584U JP 12928887 U JP12928887 U JP 12928887U JP 12928887 U JP12928887 U JP 12928887U JP S6434584 U JPS6434584 U JP S6434584U
- Authority
- JP
- Japan
- Prior art keywords
- detection sensor
- metal detection
- discriminator
- drill
- signal
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987129288U JPH0434470Y2 (hu) | 1987-08-26 | 1987-08-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987129288U JPH0434470Y2 (hu) | 1987-08-26 | 1987-08-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6434584U true JPS6434584U (hu) | 1989-03-02 |
| JPH0434470Y2 JPH0434470Y2 (hu) | 1992-08-17 |
Family
ID=31383428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987129288U Expired JPH0434470Y2 (hu) | 1987-08-26 | 1987-08-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0434470Y2 (hu) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6397151B1 (ja) * | 2018-04-26 | 2018-09-26 | 藤井 健之 | 地盤調査方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53148101A (en) * | 1977-05-31 | 1978-12-23 | Nissho Kogyo Kk | Detecting device for berried metals in case of utilizing boring machine and antena for detection |
-
1987
- 1987-08-26 JP JP1987129288U patent/JPH0434470Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53148101A (en) * | 1977-05-31 | 1978-12-23 | Nissho Kogyo Kk | Detecting device for berried metals in case of utilizing boring machine and antena for detection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6397151B1 (ja) * | 2018-04-26 | 2018-09-26 | 藤井 健之 | 地盤調査方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0434470Y2 (hu) | 1992-08-17 |