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Liquid quantity sensing device

  • US 20070115308A1
  • Filed: 11/14/2006
  • Published: 05/24/2007
  • Est. Priority Date: 11/24/2005
  • Status: Abandoned Application
First Claim
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1. A liquid quantity sensing device including a container that stores electrically conductive liquid and includes an upper wall and a bottom wall, comprising:

  • a sensor body to extend toward an interior of the container;

    a first electrode disposed on the sensor body;

    a plurality of second electrodes disposed on the sensor body, the plurality of second electrodes being separated from each other in a direction from the upper wall to the bottom wall; and

    a sensing mechanism to sense conduction states between each of the plurality of second electrodes and the first electrode, wherein at least one of the first electrode and an uppermost electrode of the plurality of second electrodes is separated from the upper wall by a distance larger than a maximum thickness of a liquid drop of the liquid.

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