Ships – Building – Antifriction surfaces
Reexamination Certificate
2011-01-25
2011-01-25
Vasudeva, Ajay (Department: 3617)
Ships
Building
Antifriction surfaces
Reexamination Certificate
active
07874258
ABSTRACT:
A method of reducing frictional resistance between a ship hull and water by releasing gases through a plurality of gas outlets under a water level in a fore portion of the hull. The released gases are selected from a group of air, engine exhaust gas and water vapor. A heating device supplied with electric power is provided at a periphery of each gas outlet for producing the water vapor. The position of releasing the gases is selected according to parameters including the shape of the hull, the velocity, the draft depth and the water temperature, such that the released gases are floated to the water surface along predetermined flow lines on the hull.
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Rosenberg , Klein & Lee
Vasudeva Ajay
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