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Probe for sensing the presence of liquid in a container

  • US 5,057,823 A
  • Filed: 03/12/1990
  • Issued: 10/15/1991
  • Est. Priority Date: 03/12/1990
  • Status: Expired due to Fees
First Claim
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1. A probe device for insertion into a container for use in indicating the presence of a liquid held within the container, the probe comprising:

  • a conductive body portion having a probe channel extending therethrough from a proximal end to a distal end, a proximal end closure means, the closure means for sealing of the proximal end of the probe channel, the closure means for retaining a conductive probe and for insulating the conductive probe from the body portion, and the closure means providing for extension of the probe through the probe channel, and the body portion having a relief hole extending therethrough into the probe channel and located on the body portion at a point there along towards the proximal end, a liquid excluding air space between the body portion proximal end and the relief hole for preventing the liquid or any condensed fraction thereof from forming a conductive path between the probe and the body portion, and a suction channel extending along the body portion and fluidly separate from the probe channel for extracting the liquid there through from the container.

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