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Electrokinetic high pressure hydraulic system

  • US 6,019,882 A
  • Filed: 04/07/1998
  • Issued: 02/01/2000
  • Est. Priority Date: 06/25/1997
  • Status: Expired due to Term
First Claim
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1. A valve for the manipulation of a fluid, comprising:

  • a) an electro-osmotic pump capable of exerting a hydraulic force greater than 10 psi, comprising;

    i) a microchannel having a fluid inlet and outlet and a porous dielectric material disposed in said microchannel;

    ii) an electrolyte contained within said microchannel;

    iii) spaced electrodes in communication with said electrolyte; and

    iv) means for applying an electric potential to said spaced electrodes;

    b) a housing, including;

    i) a first chamber having at least one fluid inlet and at least one fluid outlet sealingly connected thereto;

    ii) a second chamber containing a fluid and adapted to receive the output from the electro-osmotic pump connected thereto; and

    iii) a flexible member sealingly separating said first and second chambers and adapted to move in response to the hydraulic force generated by the electro-osmotic pump to close or open the fluid inlet.

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