JPS5751548A - Car safety device with sidewise folding boom - Google Patents
Car safety device with sidewise folding boomInfo
- Publication number
- JPS5751548A JPS5751548A JP12747380A JP12747380A JPS5751548A JP S5751548 A JPS5751548 A JP S5751548A JP 12747380 A JP12747380 A JP 12747380A JP 12747380 A JP12747380 A JP 12747380A JP S5751548 A JPS5751548 A JP S5751548A
- Authority
- JP
- Japan
- Prior art keywords
- boom
- sidewise
- folding
- looking
- sense
- 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
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
PURPOSE: To prevent turn and tumble of a working table by furnishing a means to sense the angular range of an expansion boom's looking up and down and by providing possibility of a sidewise folding boom's stretching out only on the condition that the expansion boom lies in a certain specified angular range of its looking up and down.
CONSTITUTION: A means to sense the angle of the boom's looking up and down, 29, is installed at the pivoting part of an expansion boom to a revolving table while a means to sense the state minimum contracted, 30, is installed at the tip of the expansion boom 4. A sequence valve 19 is arranged in the circuit 18 connecting a sidewise folding cylinder 10 to a selector valve 17 and operated by pressure oil. A motor 20 is put into operation only when the sensing means senses the condition that stretching the sidewise folding boom gives no danger, and then the sequence valve 19 is put into operation. When the selector valve 17 is then operated, the sidewise folding cylinder 10 will operate to stretch the sidewise folding boom out to the boom's foremost end.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12747380A JPS5751548A (en) | 1980-09-12 | 1980-09-12 | Car safety device with sidewise folding boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12747380A JPS5751548A (en) | 1980-09-12 | 1980-09-12 | Car safety device with sidewise folding boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5751548A true JPS5751548A (en) | 1982-03-26 |
Family
ID=14960789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12747380A Pending JPS5751548A (en) | 1980-09-12 | 1980-09-12 | Car safety device with sidewise folding boom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5751548A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390669A (en) * | 1986-10-03 | 1988-04-21 | Hitachi Ltd | Ignition timing control device for internal combustion engine |
| JPS6473170A (en) * | 1987-09-14 | 1989-03-17 | Toyo Denso Kk | Engine ignition control apparatus |
-
1980
- 1980-09-12 JP JP12747380A patent/JPS5751548A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6390669A (en) * | 1986-10-03 | 1988-04-21 | Hitachi Ltd | Ignition timing control device for internal combustion engine |
| JPS6473170A (en) * | 1987-09-14 | 1989-03-17 | Toyo Denso Kk | Engine ignition control apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5346528A (en) | Non-contact ignition system with closing-angle controlling device | |
| JPS5325771A (en) | Oil pressure anti-skid device | |
| JPS5751548A (en) | Car safety device with sidewise folding boom | |
| JPS5649404A (en) | Multistage stretching boom | |
| JPS5628302A (en) | Speed control circuit of crane or the like | |
| JPS55120910A (en) | Device such as portable drill | |
| JPS5653992A (en) | Power trimming and tilting apparatus for outboard motorboat | |
| JPS5376277A (en) | Operating device of oil pressure | |
| JPS56160458A (en) | Pressure control unit for a hydraulic closed device | |
| JPS5754703A (en) | Speed control circuit for hydraulic cylinder | |
| JPS5644475A (en) | High pressure generating device | |
| JPS52109231A (en) | Steering angle limiting device for power steering apparatus | |
| JPS5335802A (en) | Control device of turbine bypass valve | |
| JPS5683575A (en) | Protective system for hydraulic machine | |
| JPS5320064A (en) | Hydraulic control device for hydraulic clutch | |
| JPS5268603A (en) | Controlling device for steam turbine | |
| JPS5320076A (en) | Single action hydraulic cylinder | |
| JPS51148171A (en) | A ganged valve oil pressure circuit for the construction machine | |
| JPS53120060A (en) | Fluid control device | |
| JPS5298216A (en) | Pressurizing-speed controller for highpressure gas | |
| JPS5533215A (en) | Automatic normal-position stopper for body of revolution | |
| JPS53148043A (en) | Safety device in gas combustion apparatus | |
| JPS5475053A (en) | Protective device for variable speed motor | |
| JPS53131337A (en) | Ignition system | |
| JPS5380006A (en) | Automatic pump |