JPH0437995Y2 - - Google Patents
Info
- Publication number
- JPH0437995Y2 JPH0437995Y2 JP1985096743U JP9674385U JPH0437995Y2 JP H0437995 Y2 JPH0437995 Y2 JP H0437995Y2 JP 1985096743 U JP1985096743 U JP 1985096743U JP 9674385 U JP9674385 U JP 9674385U JP H0437995 Y2 JPH0437995 Y2 JP H0437995Y2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- head
- piston
- piston rod
- 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
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 9
- 238000001514 detection method Methods 0.000 description 3
- 230000001141 propulsive effect Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985096743U JPH0437995Y2 (ko) | 1985-06-27 | 1985-06-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985096743U JPH0437995Y2 (ko) | 1985-06-27 | 1985-06-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS627487U JPS627487U (ko) | 1987-01-17 |
JPH0437995Y2 true JPH0437995Y2 (ko) | 1992-09-07 |
Family
ID=30962841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985096743U Expired JPH0437995Y2 (ko) | 1985-06-27 | 1985-06-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0437995Y2 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2753558B2 (ja) * | 1989-12-28 | 1998-05-20 | 日本電信電話株式会社 | 小口径孔掘削装置及び小口径孔推進工法における方向修正方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5542922A (en) * | 1978-09-18 | 1980-03-26 | Nitto Kouji Kk | Method and device for driving front pipe for buried pipe |
JPS57187497A (en) * | 1981-05-11 | 1982-11-18 | Susumu Imamura | Underground press-in piping machine |
JPS59161596A (ja) * | 1983-03-04 | 1984-09-12 | 株式会社小松製作所 | 小口径管推進機の先導装置 |
-
1985
- 1985-06-27 JP JP1985096743U patent/JPH0437995Y2/ja not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5542922A (en) * | 1978-09-18 | 1980-03-26 | Nitto Kouji Kk | Method and device for driving front pipe for buried pipe |
JPS57187497A (en) * | 1981-05-11 | 1982-11-18 | Susumu Imamura | Underground press-in piping machine |
JPS59161596A (ja) * | 1983-03-04 | 1984-09-12 | 株式会社小松製作所 | 小口径管推進機の先導装置 |
Also Published As
Publication number | Publication date |
---|---|
JPS627487U (ko) | 1987-01-17 |
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