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Pressure transducer

  • US 4,314,228 A
  • Filed: 04/16/1980
  • Issued: 02/02/1982
  • Est. Priority Date: 04/16/1980
  • Status: Expired due to Term
First Claim
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1. A pressure transducer device comprising:

  • a housing defining a chamber with a bottom surface and side walls;

    a first conductor positioned adjacent the bottom surface of the chamber;

    a flap having an upper and lower surface generally parallel with the bottom surface and a hinge region for movably attaching the flap at a spaced location above the bottom surface to extend from a side wall into the chamber, the flap being movable in the chamber about the hinge region;

    a second conductor disposed on the lower surface of the flap;

    a pressure responsive semiconducting composition layer disposed for covering at least one of the first conductor and the second conductor; and

    a diaphragm attached about its periphery to the housing in spaced relationship to the bottom surface for enclosing the chamber, the diaphragm adhesively attached to the upper surface of the flap at a center region laterally spaced from the housing, the second conductor being variably movable with the flap into electrically conducting relationship with the first conductor by the diaphragm in response to variations in pressure force exerted against the diaphragm.

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