Patent ID: 9625075
Date: 2017-04-18
CPC Classifications: F16L

Claim:
1. A conduit for conveying fluids and/or solids, the conduit having an interior surface comprising an impregnating liquid and a plurality of micro-scale and/or nano-scale solid features spaced sufficiently close to stably contain the impregnating liquid therebetween, wherein said impregnating liquid fills spaces between said solid features, wherein said interior surface stably contains said impregnating liquid between said solid features, wherein said impregnating liquid is substantially held in place between said plurality of solid features regardless of orientation of said interior surface and regardless of flow, passage, or removal of fluids and/or solids through, into, or out of said conduit, said interior surface configured to provide a high-slip boundary condition at said interior surface, thereby facilitating the flow, passage, or removal of fluids and/or solids through, into, or out of said conduit, and wherein the conduit comprises a reservoir for containing liquid for replenishing impregnating liquid lost from the liquid-impregnated surface.