JPH0190898U - - Google Patents
Info
- Publication number
- JPH0190898U JPH0190898U JP18294287U JP18294287U JPH0190898U JP H0190898 U JPH0190898 U JP H0190898U JP 18294287 U JP18294287 U JP 18294287U JP 18294287 U JP18294287 U JP 18294287U JP H0190898 U JPH0190898 U JP H0190898U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- drill
- guide surface
- sheath
- tube
- 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
- 238000000034 method Methods 0.000 claims 4
- 230000000452 restraining effect Effects 0.000 claims 2
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18294287U JPH0526154Y2 (enrdf_load_stackoverflow) | 1987-12-02 | 1987-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18294287U JPH0526154Y2 (enrdf_load_stackoverflow) | 1987-12-02 | 1987-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0190898U true JPH0190898U (enrdf_load_stackoverflow) | 1989-06-14 |
| JPH0526154Y2 JPH0526154Y2 (enrdf_load_stackoverflow) | 1993-07-01 |
Family
ID=31474381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18294287U Expired - Lifetime JPH0526154Y2 (enrdf_load_stackoverflow) | 1987-12-02 | 1987-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0526154Y2 (enrdf_load_stackoverflow) |
-
1987
- 1987-12-02 JP JP18294287U patent/JPH0526154Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0526154Y2 (enrdf_load_stackoverflow) | 1993-07-01 |
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