JPH0446182U - - Google Patents
Info
- Publication number
- JPH0446182U JPH0446182U JP8759690U JP8759690U JPH0446182U JP H0446182 U JPH0446182 U JP H0446182U JP 8759690 U JP8759690 U JP 8759690U JP 8759690 U JP8759690 U JP 8759690U JP H0446182 U JPH0446182 U JP H0446182U
- Authority
- JP
- Japan
- Prior art keywords
- roller
- apex
- excavation tips
- shaped
- apex portion
- 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
- 238000009412 basement excavation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8759690U JP2508128Y2 (ja) | 1990-08-22 | 1990-08-22 | ロ―ラカッタ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8759690U JP2508128Y2 (ja) | 1990-08-22 | 1990-08-22 | ロ―ラカッタ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0446182U true JPH0446182U (enExample) | 1992-04-20 |
| JP2508128Y2 JP2508128Y2 (ja) | 1996-08-21 |
Family
ID=31820075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8759690U Expired - Fee Related JP2508128Y2 (ja) | 1990-08-22 | 1990-08-22 | ロ―ラカッタ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2508128Y2 (enExample) |
-
1990
- 1990-08-22 JP JP8759690U patent/JP2508128Y2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2508128Y2 (ja) | 1996-08-21 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |