| abstract |
An open-celled capillary device is provided to control the flow of fluids. The structure includes a resilient matrix, a plurality of cells in fluid-communicating relationship disposed within the matrix, and a plurality of capillary pores distributed over at least the working surface of the matrix in fluid-communicating relationship with the cells. In the preferred embodiment, the diameter of the pores and the diameter of the cells adjacent the working surface are smaller than are the diameters of the cells more remote from the working surface. This configuration permits effective control, both qualitatively and quantitatively, over the flow of liquid at tHe working surface of the matrix. |