JPH0362140U - - Google Patents
Info
- Publication number
- JPH0362140U JPH0362140U JP12285989U JP12285989U JPH0362140U JP H0362140 U JPH0362140 U JP H0362140U JP 12285989 U JP12285989 U JP 12285989U JP 12285989 U JP12285989 U JP 12285989U JP H0362140 U JPH0362140 U JP H0362140U
- Authority
- JP
- Japan
- Prior art keywords
- sprocket
- guide tube
- chain
- sliding member
- end locked
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12285989U JPH0362140U (en]) | 1989-10-19 | 1989-10-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12285989U JPH0362140U (en]) | 1989-10-19 | 1989-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0362140U true JPH0362140U (en]) | 1991-06-18 |
Family
ID=31670856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12285989U Pending JPH0362140U (en]) | 1989-10-19 | 1989-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0362140U (en]) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS631056B2 (en]) * | 1981-05-20 | 1988-01-11 | Tokyo Optical | |
| JPH01192695A (ja) * | 1988-01-25 | 1989-08-02 | Hikoma Seisakusho Kk | ブーム伸縮機構 |
-
1989
- 1989-10-19 JP JP12285989U patent/JPH0362140U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS631056B2 (en]) * | 1981-05-20 | 1988-01-11 | Tokyo Optical | |
| JPH01192695A (ja) * | 1988-01-25 | 1989-08-02 | Hikoma Seisakusho Kk | ブーム伸縮機構 |