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Fluid drip detector

  • US 5,616,830 A
  • Filed: 06/08/1995
  • Issued: 04/01/1997
  • Est. Priority Date: 06/08/1995
  • Status: Expired due to Fees
First Claim
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1. A fluid drip detector for detecting presence of drops and leaks of fluid via measured changes in electrical resistances, comprising:

  • an electrically conducting housing having an electrical lead and first electrical contact protruding into the housing, the lead and contact being electrically insulated from the housing, the housing having a seat disposed therein;

    an electrically conducting moving door means and second electrical contact situated in the housing, said moveable door means capable of mechanically engaging with and/or disengaging from the seat;

    the door means being responsive to a fluid drip via the hydraulic pressure drop caused by the presence of a drop in the housing thereby disengaging the door from the seat in a drip condition such that the electrical resistance between door and seat increases in a drip condition, but the door means is normally engaging the seat and the lead in a no drip condition characterized by a minimum resistance value between said door and seat; and

    an electric resistance detector means connected to the lead and said door means for producing an electrical output in the event of a drip condition.

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