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Wide activation angle pinch sensor section and sensor hook-on attachment principle

  • US 8,493,081 B2
  • Filed: 12/08/2010
  • Issued: 07/23/2013
  • Est. Priority Date: 12/08/2009
  • Status: Active Grant
First Claim
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1. A pinch sensor (100, 100

  • , 200, 200

    ), comprising;

    a non-conductive tubular casing (110;

    210) having an outer wall and an inner wall and defining an internal hollow region (108;

    208), the tubular casing being formed from a resiliently deformable material;

    three electrically-conductive conduits (102;

    202, 203) disposed along the casing inner wall, wherein each electrically-conductive conduit has a periphery that extends into the hollow region, and wherein, in section, the three electrically-conductive conduits are substantially equidistantly spaced circumferentially along the casing inner wall;

    wherein, upon deformation of the casing, at least one of the electrically-conductive conduits (102;

    202) comes into contact with a electrically conductive reference element (112;

    203) to thereby lower the resistance therebetween.

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