JPH02109890U - - Google Patents
Info
- Publication number
- JPH02109890U JPH02109890U JP1908889U JP1908889U JPH02109890U JP H02109890 U JPH02109890 U JP H02109890U JP 1908889 U JP1908889 U JP 1908889U JP 1908889 U JP1908889 U JP 1908889U JP H02109890 U JPH02109890 U JP H02109890U
- Authority
- JP
- Japan
- Prior art keywords
- pressure oil
- bottom side
- cover
- shield
- port
- 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
- 230000008602 contraction Effects 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 claims 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1908889U JPH0617916Y2 (ja) | 1989-02-21 | 1989-02-21 | シールドジャッキ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1908889U JPH0617916Y2 (ja) | 1989-02-21 | 1989-02-21 | シールドジャッキ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02109890U true JPH02109890U (bs) | 1990-09-03 |
| JPH0617916Y2 JPH0617916Y2 (ja) | 1994-05-11 |
Family
ID=31234289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1908889U Expired - Lifetime JPH0617916Y2 (ja) | 1989-02-21 | 1989-02-21 | シールドジャッキ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617916Y2 (bs) |
-
1989
- 1989-02-21 JP JP1908889U patent/JPH0617916Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0617916Y2 (ja) | 1994-05-11 |