Fluid handling device with directionally-biased wetting surface

Details Fluid handling device with directionally-biased wetting surface Fluid handling device with directionally-biased wetting surface

2006-09-15

2011-10-04

Hodge, Robert (Department: 1729)

Pipes and tubular conduits

With flow regulators and/or baffles

Flow facilitating

C137S001000, C134S022100, C134S022180, C134S023000, C429S483000, C429S499000, C429S516000

Reexamination Certificate

active

08028722

ABSTRACT:
A fluid handling device with an anisotropic wetting surface including a substrate with a multiplicity of asymmetric substantially uniformly shaped asperities thereon. Each asperity has a first asperity rise angle and a second asperity rise angle relative to the substrate. The asperities are structured to present a desired retentive force ratio (f1/f2) greater or less than unity caused by asymmetry between the first asperity rise angle and the second asperity rise angle according to the formula: f3/f2=sin(ω3+½Δθ0)/sin(ω2+½Δθ0).

REFERENCES:
patent: 6845788 (2005-01-01), Extrand
patent: 6852390 (2005-02-01), Extrand
patent: 6911276 (2005-06-01), Extrand
patent: 6923216 (2005-08-01), Extrand et al.
patent: 6976585 (2005-12-01), Extrand

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