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Piezoelectric fluid control device

  • US 4,450,375 A
  • Filed: 11/12/1982
  • Issued: 05/22/1984
  • Est. Priority Date: 11/12/1982
  • Status: Expired due to Fees
First Claim
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1. A piezoelectric device for selectively dispensing desired quantities of a fluid under pressure comprising:

  • A. a valve body having a fluid chamber and inlet and outlet means communicating with said chamber with said inlet means adapted to be connected to a source of said fluid under pressure; and

    B. fluid control valve means for controlling such fluid dispensation through said outlet means comprising;

    I. said body having at least one valve seat communicating with said outlet means;

    II. a deformable member mounted on the valve body in cooperation with said valve seat effective to control communication with said outlet means about said valve seat and impacting means directly engageable with the deformable member for selectively distorting said member proximate said valve seat to change the condition of said deformable member about said valve seat so as to establish or disrupt such communication with said outlet means as desired; and

    C. piezoelectric bender means mounted on the valve body isolated from said fluid chamber and adapted to be electrically connected to a D.C. source;

    said bender means including a deflectable portion engaging said impacting means to move same selectively upon energizing or deenergizing of said piezoelectric bender means for selectively distorting the deformable member without either said impacting means or said bender means contacting said fluid.

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