Valve device
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United States of America Patent
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Jan 24, 2017
Grant Date -
Sep 8, 2016
app pub date -
May 18, 2016
filing date -
Jun 30, 2005
priority date (Note) -
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Abstract
A valve device including a substrate with first and second surfaces positioned on opposing sides, a first groove extending along the first surface with a horseshoe shaped end in a valve area formed on the first surface, a second groove extending along the second surface, a channel fluidically coupled to the second groove and extending from the second surface to the first surface ending at an end in the valve area; a first membrane providing a fluid tight connection with the first surface of the substrate except at the valve area and forming a first channel at the first groove, an area of the end of the first groove is larger than an area of the end of the channel; and a second membrane providing a fluid tight connection with the second surface of the substrate forming a second channel at the second groove.
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