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Fluid injection microvalve

United States Patent

6,966,336
November 22, 2005
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A microvalve for extracting small volume samples into analytical devices, e.g., high pressure liquid chromatography (HPLC) column, includes: a first body having a first interior surface and two or more outlet ports at the first interior surface that are in fluid communication with two or more first channels; a second body having a second interior surface and two or more inlet ports at the second interior surface that are in fluid communication with two or more second channels wherein the outlet ports of the first body are coaxial with the corresponding inlet ports of the second body such that there are at least two sets of coaxial port outlets and port inlets; a plate member, which has a substantially planar first mating surface and a substantially planar second mating surface, that is slidably positioned between the first interior surface and the second interior surface wherein the plate member has at least one aperture that traverses the height of the plate member, and wherein the aperture can be positioned to be coaxial with any of the at least two sets of coaxial port outlets and port inlets; and means for securing the first surface of the first body against the first mating surface and for securing the second surface of the second body against the second mating surface.
Renzi; Ronald F. (Tracy, CA)
Sandia National Laboratories (Livermore, CA)
10/ 350,626
January 24, 2003
This invention was made with Government support under Contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy to Sandia Corporation. The Government has certain rights to the invention.