Ships – Building – Antifriction surfaces
Reexamination Certificate
2006-05-16
2006-05-16
Avila, Stephen (Department: 3617)
Ships
Building
Antifriction surfaces
Reexamination Certificate
active
07044073
ABSTRACT:
A submerged surface is created, either as an add-on application or as an integral part of the submerged structure, having an array of closely spaced small bubble-filled holes which cover a large fraction of the wetted surface area. The viscous drag on the bubbles is much smaller than that on the surrounding solid surface and the net drag on the entire submerged surface is less than that on an equivalent solid surface.
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International Search Report for International Application No. PCT/US 03/12950, Nov. 13, 2004.
Fontaine, A.A., et al., “The Influence of the Type of Gas on the Reduction of Skin Friction Drag by Microbubble Injection,” Experiments in Fluids, Springer-Verlag, vol. 13, No. 2/3, pp. 128-136, 1992.
Avila Stephen
Board of Regents of The University of Texas System
Dillon & Yudell LLP
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