JPS569510A - Apparatus for maintaining fence on water surface - Google Patents
Apparatus for maintaining fence on water surfaceInfo
- Publication number
- JPS569510A JPS569510A JP8352679A JP8352679A JPS569510A JP S569510 A JPS569510 A JP S569510A JP 8352679 A JP8352679 A JP 8352679A JP 8352679 A JP8352679 A JP 8352679A JP S569510 A JPS569510 A JP S569510A
- Authority
- JP
- Japan
- Prior art keywords
- fence
- water level
- water surface
- detector
- winch
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
Landscapes
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
PURPOSE: To provide an apparatus used for an oil fence or driftwood collecting fence, which is capable of making the fence accurately follow the shifting of water level and thereby maintaining the fence always on the water surface by use of a water level detector and a control circuit.
CONSTITUTION: The water level following system of this invention comprises a water level detector 50 mounted on trolley 16 and a control circuit 70 for controlling winch 24 in response to the output signal from said water level detector 50. When level switch 53 disposed upwardly of float 52 of detector 50 is turned ON as the water level is raised, winch 24 is set into operation for lifting trolley 16 supporting fence 10 through a distance equivalent to the raised water level, so that the rear end of fence 10 is located correctly on the water surface. Then, relay 72 is energized by switch 54 of water level detector 50 for turning winch in reverse direction, so that rope 20 is reeled out through a required length. Therefore, even if a high tensile force is acted to the fence, it can be kept always on the water surface.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8352679A JPS569510A (en) | 1979-07-03 | 1979-07-03 | Apparatus for maintaining fence on water surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8352679A JPS569510A (en) | 1979-07-03 | 1979-07-03 | Apparatus for maintaining fence on water surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS569510A true JPS569510A (en) | 1981-01-31 |
| JPS5749687B2 JPS5749687B2 (en) | 1982-10-23 |
Family
ID=13804919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8352679A Granted JPS569510A (en) | 1979-07-03 | 1979-07-03 | Apparatus for maintaining fence on water surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS569510A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6298179A (en) * | 1985-10-24 | 1987-05-07 | 三洋電機株式会社 | Refrigerator |
| JPH0531508Y2 (en) * | 1985-11-05 | 1993-08-12 | ||
| JPH02130374A (en) * | 1988-11-08 | 1990-05-18 | Osaka Shosen Mitsui Senpaku Kk | Gas conduction mechanism for box body for refrigerating transportation and box body utilizing the same mechanism |
-
1979
- 1979-07-03 JP JP8352679A patent/JPS569510A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5749687B2 (en) | 1982-10-23 |
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