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Transversely driven piston transducer

  • US 5,742,561 A
  • Filed: 05/10/1990
  • Issued: 04/21/1998
  • Est. Priority Date: 05/10/1990
  • Status: Expired due to Term
First Claim
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1. A transducer having a longitudinal axis, comprising:

  • a) at least one rigid, non-flexural piston mass member having a front radiating surface and a rear surface;

    b) electromechanically active driver means exhibiting expansion and contraction in a plane perpendicular to said longitudinal axis;

    c) said driver means and said position mass member being spaced from one another along said longitudinal axis;

    d) connecting means including i) at least two lever arms having first and second ends, and ii) a coupling section, said connecting means coupling said driver means with said piston mass member and operable to translate movement of said driver means in said plane into a corresponding axial movement of said piston mass member;

    e) said coupling section being disposed between said driver means and said first ends of said lever arms;

    f) first hinge means for each said lever arm, having a pivot axis and connecting a first end of a respective lever arm to said coupling section;

    g) second hinge means for each said lever arm, having a pivot axis and connecting a second end of a respective lever arm to said piston mass member;

    h) said lever arms having a rigidity, and said hinge means being constructed and arranged such that during operation, said lever arms move with a uniform angular velocity about said pivot axis of either of said hinge means, and said radiating surface of said piston mass member moves with a uniform velocity distribution.

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