Patent ID: 6221256
Filing Date: 2001-04-24
Classification: E02B,Y02A,Y10S

Abstract:
A method of preventing the spreading of spilled oil, characterized by comprising the steps of:throwing a block body near a sea area where spilled oil is spread, the block body including an oil-fence-housing robot ship having a steering and propelling machine whose operation is radio-controlled attached to a bottom thereof; a pair of oil-fence-setting-up robot ships having steering and propelling machines whose operations are radio-controlled attached to bottoms thereof; and oil fences that are housed while wound in the oil-fence-housing robot ship with ends thereof tied to both the oil-fence-housing robot ship and each of the oil-fence-setting-up robot ships;separating the pair of oil-fence-setting-up robot ships from the oil-fence-housing robot ship to unwind and extend the oil fences;sending radio signals to said radio-controlled steering and propelling machines to navigate the oil-fence-setting-up robot ships independently of each other; andcausing the extended oil fences to encircle the sea area where spilled oil is spread by navigating the pair of oil-fence-setting-up robot ships.