JPH0119033B2 - - Google Patents
Info
- Publication number
- JPH0119033B2 JPH0119033B2 JP4794382A JP4794382A JPH0119033B2 JP H0119033 B2 JPH0119033 B2 JP H0119033B2 JP 4794382 A JP4794382 A JP 4794382A JP 4794382 A JP4794382 A JP 4794382A JP H0119033 B2 JPH0119033 B2 JP H0119033B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- middle cylinder
- outer cylinder
- hook
- lashing
- 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
- 230000037431 insertion Effects 0.000 claims description 15
- 238000003780 insertion Methods 0.000 claims description 15
- 230000003028 elevating effect Effects 0.000 description 10
- 239000000725 suspension Substances 0.000 description 8
- 230000007812 deficiency Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4794382A JPS58164888A (ja) | 1982-03-24 | 1982-03-24 | 多段ブ−ム伸縮装置の安全装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4794382A JPS58164888A (ja) | 1982-03-24 | 1982-03-24 | 多段ブ−ム伸縮装置の安全装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58164888A JPS58164888A (ja) | 1983-09-29 |
| JPH0119033B2 true JPH0119033B2 (enExample) | 1989-04-10 |
Family
ID=12789441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4794382A Granted JPS58164888A (ja) | 1982-03-24 | 1982-03-24 | 多段ブ−ム伸縮装置の安全装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58164888A (enExample) |
-
1982
- 1982-03-24 JP JP4794382A patent/JPS58164888A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58164888A (ja) | 1983-09-29 |
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