Blocking device for use in deep-water to block leakage of petrol on oil pipe-line, has conical part extended from hollow cylindrical part, whose exterior diameter is slightly lesser than interior diameter of oil pipe-line

摘要

The device has a conical part (1) that is extended from a hollow cylindrical part (2), whose exterior diameter is slightly lesser than interior diameter of an oil pipe-line (4). Hooks (6) are fixed on a hollow truncated cone (5). A seal channel connects an opening of the conical part to the opening of a malleable metal element for continuous exploitation of petrol. (Incomplete specification, abstract based on available information published by the patent office).