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Double-acting pressure sensor

  • US 9,841,339 B2
  • Filed: 08/28/2015
  • Issued: 12/12/2017
  • Est. Priority Date: 08/28/2015
  • Status: Active Grant
First Claim
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1. A pressure sensor comprisinga base including a bottom wall and a first sidewall, the bottom wall and the first sidewall cooperatively forming a first receiving space, the first sidewall having a top portion facing away from the bottom wall;

  • a pressure sensitive film having a peripheral portion arranged on the top portion of the first sidewall such that the pressure sensitive film is suspended over the bottom wall, the pressure sensitive film having a resistance changed in a linear variation range within a pressure range; and

    an elastic cover including a top wall, a second sidewall, and a protrusion, the top wall and the second sidewall form a second receiving space, wherein the second sidewall is positioned on the first sidewall of the base, the protrusion extends from the top wall to contact the pressure sensitive film so that a force from the external pressure is transferred to the pressure sensitive film, whereby the resistance of the pressure sensitive film changes in the linear variation range.

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