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Contact sensors and methods for making same

  • US 8,820,173 B2
  • Filed: 03/08/2010
  • Issued: 09/02/2014
  • Est. Priority Date: 03/06/2009
  • Status: Active Grant
First Claim
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1. A contact sensor, comprising:

  • a data acquisition terminal;

    a plurality of polymer sensor sheets, each polymer sensor sheet having selected spaced conductive portions integrally formed therein, wherein each spaced conductive portion is in communication with the data acquisition terminal, wherein adjacent polymer sensor sheets are stacked such that portions of the conductive portions therein the sensor sheets overlap and create an array of sensing points at the overlapping portions of the stacked sensor sheets, andmeans for determining the pressure applied at least one sensing point of the array of sensing points,wherein the conductive portion of each polymer sensor sheet is formed from a pressure sensitive conductive composite material that comprises an electrically conductive filler and a polymeric material.

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