JPS6381994U - - Google Patents
Info
- Publication number
- JPS6381994U JPS6381994U JP17330286U JP17330286U JPS6381994U JP S6381994 U JPS6381994 U JP S6381994U JP 17330286 U JP17330286 U JP 17330286U JP 17330286 U JP17330286 U JP 17330286U JP S6381994 U JPS6381994 U JP S6381994U
- Authority
- JP
- Japan
- Prior art keywords
- casing
- detection device
- angle detection
- hammer
- striking
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 238000009527 percussion Methods 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17330286U JPS6381994U (en]) | 1986-11-13 | 1986-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17330286U JPS6381994U (en]) | 1986-11-13 | 1986-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6381994U true JPS6381994U (en]) | 1988-05-30 |
Family
ID=31110635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17330286U Pending JPS6381994U (en]) | 1986-11-13 | 1986-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6381994U (en]) |
-
1986
- 1986-11-13 JP JP17330286U patent/JPS6381994U/ja active Pending
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