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Capacitor based force sensor

  • US 20040227736A1
  • Filed: 05/16/2003
  • Published: 11/18/2004
  • Est. Priority Date: 05/16/2003
  • Status: Active Grant
First Claim
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1. A capacitive device configured to detect differences in an applied force over a continuous range of applied force including zero force, the device comprising:

  • first and second electrodes, the electrodes being spaced apart a predetermined distance from each other in a rest position, a measurable capacitance existing between the first and second electrodes;

    structured elements having a predetermined maximum dimension positioned to control the predetermined distance between the first and second electrodes;

    whereby the applied force causes a change in the distance between the first and second electrodes and a related change in the capacitance that can be measured to determine information related to the applied force.

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