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Piezoelectric snap action switch

  • US 5,315,204 A
  • Filed: 04/16/1990
  • Issued: 05/24/1994
  • Est. Priority Date: 04/16/1990
  • Status: Expired due to Fees
First Claim
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1. A non-contact piezoelectric switch comprising:

  • a first snap action plate with a curved surface;

    a second snap action plate with a curved surface;

    a piezoelectric polymer film having respective surfaces disposed between said curved surfaces of said first and second snap action plates;

    first and second conductors which are respectively electrically connected to said first and second snap action plates; and

    a third conductor intermediate of said first and second conductors,whereby said first, second and third conductors are brought into electrical contact with each other upon depression of at least one of said snap action plates and said piezoelectric polymer film is extended or contracted along the surface thereof so as to conduct an electrical signal between said first and second snap action plates.

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