JPH042237Y2 - - Google Patents
Info
- Publication number
- JPH042237Y2 JPH042237Y2 JP7646986U JP7646986U JPH042237Y2 JP H042237 Y2 JPH042237 Y2 JP H042237Y2 JP 7646986 U JP7646986 U JP 7646986U JP 7646986 U JP7646986 U JP 7646986U JP H042237 Y2 JPH042237 Y2 JP H042237Y2
- Authority
- JP
- Japan
- Prior art keywords
- pin
- propulsion
- push jack
- rear end
- pipe
- 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
- 239000003517 fume Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 241000256247 Spodoptera exigua Species 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7646986U JPH042237Y2 (enrdf_load_stackoverflow) | 1986-05-21 | 1986-05-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7646986U JPH042237Y2 (enrdf_load_stackoverflow) | 1986-05-21 | 1986-05-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62190785U JPS62190785U (enrdf_load_stackoverflow) | 1987-12-04 |
| JPH042237Y2 true JPH042237Y2 (enrdf_load_stackoverflow) | 1992-01-24 |
Family
ID=30923573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7646986U Expired JPH042237Y2 (enrdf_load_stackoverflow) | 1986-05-21 | 1986-05-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042237Y2 (enrdf_load_stackoverflow) |
-
1986
- 1986-05-21 JP JP7646986U patent/JPH042237Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62190785U (enrdf_load_stackoverflow) | 1987-12-04 |
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