JPS5213245A - Retractile hydraulic boom for portable crane - Google Patents
Retractile hydraulic boom for portable craneInfo
- Publication number
- JPS5213245A JPS5213245A JP8979675A JP8979675A JPS5213245A JP S5213245 A JPS5213245 A JP S5213245A JP 8979675 A JP8979675 A JP 8979675A JP 8979675 A JP8979675 A JP 8979675A JP S5213245 A JPS5213245 A JP S5213245A
- Authority
- JP
- Japan
- Prior art keywords
- retractile
- hydraulic boom
- boom
- portable crane
- load
- 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
Landscapes
- Jib Cranes (AREA)
Abstract
PURPOSE: To render the buckle resistance of a piston rod maximum upon application of a load by supporting a hydraulic cylinder at three positions so that the axial line of a retractile boom describes a curve projecting downward when no deflection is caused in the boom to which a load is applied.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50089796A JPS5818314B2 (en) | 1975-07-22 | 1975-07-22 | The new crane boom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50089796A JPS5818314B2 (en) | 1975-07-22 | 1975-07-22 | The new crane boom |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5213245A true JPS5213245A (en) | 1977-02-01 |
JPS5818314B2 JPS5818314B2 (en) | 1983-04-12 |
Family
ID=13980653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50089796A Expired JPS5818314B2 (en) | 1975-07-22 | 1975-07-22 | The new crane boom |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5818314B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5484621A (en) * | 1977-12-16 | 1979-07-05 | Aisin Seiki | Negative pressure control valve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4852269U (en) * | 1971-10-18 | 1973-07-06 |
-
1975
- 1975-07-22 JP JP50089796A patent/JPS5818314B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4852269U (en) * | 1971-10-18 | 1973-07-06 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5484621A (en) * | 1977-12-16 | 1979-07-05 | Aisin Seiki | Negative pressure control valve |
JPS6220377B2 (en) * | 1977-12-16 | 1987-05-07 | Aisin Seiki |
Also Published As
Publication number | Publication date |
---|---|
JPS5818314B2 (en) | 1983-04-12 |
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