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Capillary valve

  • US 8,956,320 B2
  • Filed: 08/28/2012
  • Issued: 02/17/2015
  • Est. Priority Date: 08/28/2012
  • Status: Active Grant
First Claim
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1. A capillary fluid flow valve, comprising:

  • a chamber having a first boundary surface and a second boundary surface defined by a housing, the first and second boundary surfaces being spaced apart by a gap sized to invoke capillary action between the surfaces, the first surface being angled relative to the second surface, the chamber having an inlet port, an outlet port, and an air vent port, wherein the gap at the air vent port is smaller than the gap at the outlet port and the gap at the outlet port is smaller than the gap at the inlet port;

    wherein the chamber is triangular, and the inlet port, outlet port, and air vent port are disposed at the vertices of the triangular chamber.

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