JPS633829B2 - - Google Patents
Info
- Publication number
- JPS633829B2 JPS633829B2 JP8333081A JP8333081A JPS633829B2 JP S633829 B2 JPS633829 B2 JP S633829B2 JP 8333081 A JP8333081 A JP 8333081A JP 8333081 A JP8333081 A JP 8333081A JP S633829 B2 JPS633829 B2 JP S633829B2
- Authority
- JP
- Japan
- Prior art keywords
- guard
- boom
- tip
- stage
- base
- 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
- 230000008602 contraction Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8333081A JPS57199790A (en) | 1981-05-29 | 1981-05-29 | Supporter for multistage guard of multistage boom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8333081A JPS57199790A (en) | 1981-05-29 | 1981-05-29 | Supporter for multistage guard of multistage boom |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57199790A JPS57199790A (en) | 1982-12-07 |
JPS633829B2 true JPS633829B2 (it) | 1988-01-26 |
Family
ID=13799413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8333081A Granted JPS57199790A (en) | 1981-05-29 | 1981-05-29 | Supporter for multistage guard of multistage boom |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57199790A (it) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH058997Y2 (it) * | 1988-09-05 | 1993-03-05 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5367922A (en) * | 1976-11-29 | 1978-06-16 | Shin Meiwa Ind Co Ltd | Ladder for elevating boom |
-
1981
- 1981-05-29 JP JP8333081A patent/JPS57199790A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5367922A (en) * | 1976-11-29 | 1978-06-16 | Shin Meiwa Ind Co Ltd | Ladder for elevating boom |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH058997Y2 (it) * | 1988-09-05 | 1993-03-05 |
Also Published As
Publication number | Publication date |
---|---|
JPS57199790A (en) | 1982-12-07 |
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