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Force sensor with attached mass

  • US 4,891,985 A
  • Filed: 10/16/1986
  • Issued: 01/09/1990
  • Est. Priority Date: 07/22/1985
  • Status: Expired due to Term
First Claim
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1. A sensor comprising:

  • a die having a central region, a peripheral support, and a flexible annular sensing portion, the annular sensing portion being less thick than the central region and the peripheral support, the annular sensing portion being located between the central region and the peripheral support;

    a housing having an interior surface and including a spacing means, wherein the spacing means is attached to the peripheral support of the die and to the interior surface to thereby rigidly space the interior surface away from the peripheral support of the die; and

    mass means for enhancing the sensitivity of the die and for limiting the movement of the annular sensing portion of the die, the mass means being rigidly attached to the central region of the die, the mass means having a thickness and configuration permitting it to move between rigid limits formed by the peripheral support of the die and the interior surface of the housing.

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