JPS6141832Y2 - - Google Patents
Info
- Publication number
- JPS6141832Y2 JPS6141832Y2 JP13742879U JP13742879U JPS6141832Y2 JP S6141832 Y2 JPS6141832 Y2 JP S6141832Y2 JP 13742879 U JP13742879 U JP 13742879U JP 13742879 U JP13742879 U JP 13742879U JP S6141832 Y2 JPS6141832 Y2 JP S6141832Y2
- Authority
- JP
- Japan
- Prior art keywords
- chevron
- blade
- boring bit
- boring
- bisector
- 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.)
- Expired
Links
- 238000010276 construction Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13742879U JPS6141832Y2 (enrdf_load_html_response) | 1979-10-05 | 1979-10-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13742879U JPS6141832Y2 (enrdf_load_html_response) | 1979-10-05 | 1979-10-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5655093U JPS5655093U (enrdf_load_html_response) | 1981-05-13 |
| JPS6141832Y2 true JPS6141832Y2 (enrdf_load_html_response) | 1986-11-27 |
Family
ID=29368871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13742879U Expired JPS6141832Y2 (enrdf_load_html_response) | 1979-10-05 | 1979-10-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6141832Y2 (enrdf_load_html_response) |
-
1979
- 1979-10-05 JP JP13742879U patent/JPS6141832Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5655093U (enrdf_load_html_response) | 1981-05-13 |
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