JPS6231512Y2 - - Google Patents
Info
- Publication number
- JPS6231512Y2 JPS6231512Y2 JP4218081U JP4218081U JPS6231512Y2 JP S6231512 Y2 JPS6231512 Y2 JP S6231512Y2 JP 4218081 U JP4218081 U JP 4218081U JP 4218081 U JP4218081 U JP 4218081U JP S6231512 Y2 JPS6231512 Y2 JP S6231512Y2
- Authority
- JP
- Japan
- Prior art keywords
- wedge
- cylinder
- casing
- arrow
- fixed frame
- 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
- 239000004575 stone Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 description 7
- 230000006378 damage Effects 0.000 description 2
- 241000581613 Alchemilla arvensis Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Working Measures On Existing Buildindgs (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4218081U JPS6231512Y2 (enrdf_load_stackoverflow) | 1981-03-24 | 1981-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4218081U JPS6231512Y2 (enrdf_load_stackoverflow) | 1981-03-24 | 1981-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57156593U JPS57156593U (enrdf_load_stackoverflow) | 1982-10-01 |
| JPS6231512Y2 true JPS6231512Y2 (enrdf_load_stackoverflow) | 1987-08-12 |
Family
ID=29839210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4218081U Expired JPS6231512Y2 (enrdf_load_stackoverflow) | 1981-03-24 | 1981-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6231512Y2 (enrdf_load_stackoverflow) |
-
1981
- 1981-03-24 JP JP4218081U patent/JPS6231512Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57156593U (enrdf_load_stackoverflow) | 1982-10-01 |
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