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Sump alarm

  • US 5,793,294 A
  • Filed: 09/18/1995
  • Issued: 08/11/1998
  • Est. Priority Date: 09/18/1995
  • Status: Expired due to Fees
First Claim
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1. A water level detection probe that includes a galvanic cell for sump pumps having a sump reservoir in a sump hole with a sump hole liner forming a sump well to accumulate excess water and for installation of a submersible sump pump in a bottom portion of the well, and a discharge conduit to direct an excess accumulation of water to an outside external drain, the detection probe comprising:

  • an alarm activation circuitry including a battery operated, solid state alarm device to operate the probe in the event of a prolonged power loss, the alarm having an input threshold;

    the probe comprising first and second electrodes suspended in a fixed, essentially parallel position over the well, and extending an essentially equal length into the well;

    wherein said first electrode comprises an aluminum rod and the second electrode comprises a brass rod, and each electrode communicating on the circuit with the alarm device for generating a voltage of 0.576 volts DC, due to the ionic differential between the aluminum rod and brass rod electrodes, when excess water of the sump well simultaneously contacts both of the electrodes, whereby the probe provides a water level detection and alarm system for sump wells that remains in a fixed position over the well, that has no moving parts, and that does not impede reuse by requirement for relocation and resetting following a use thereof;

    means for suspending the liquid level detection probe in a recessed position near a top of the sump well, for positioning a sump hole cover over the well without interference with the probe, whereby said probe enables well closure and prevents escape of fluids from the well without warning; and

    ,means for adjusting the suspending means to fit any size sump hole.

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