Fluid transport circuit and valve structure therefor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 28, 1999
Grant Date -
N/A
app pub date -
Dec 15, 1997
filing date -
Dec 15, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An open/close valve construction for use in solid-state fluid transport circuits having discrete fluid passageways formed in rigid substrates with a substrate land between port regions of the fluid passageways. The valve construction comprises a diaphragm disk having a dome portion overlying the substrate land and port regions and having a self-restoring resilience sufficient to maintain its dome configuration against substantial line vacuum. A valve actuator is located above the dome portion and spring biased to compress the dome into a flat configuration closing the port regions. Means for negating the spring force are provided to allow the dome portion to restore its configuration and open the valve.
First Claim
Other Claims data not available