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Vertical sweep liquid level sensor

  • US 5,267,475 A
  • Filed: 03/23/1993
  • Issued: 12/07/1993
  • Est. Priority Date: 06/15/1992
  • Status: Expired due to Fees
First Claim
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1. A liquid level sensor for measuring the amount of liquid in a vessel, the liquid level sensor comprising:

  • a resistor element having a first side and a second side;

    a conductive strip located on the first side of the resistor element;

    a resistive strip located on the first side of the resistor element, the conductive and resistive strips being adapted for connection to external electrical circuitry;

    a float engaged with the resistor element, the float being movable along the resistor element as the amount of liquid in the vessel varies;

    a contact assembly connected to the float, the contact assembly electrically connecting the conductive strip and the resistive strip to complete a circuit with the external electrical circuitry; and

    dwell pad means located on the first side of the resistor element for providing a point of substantially no electrical resistance from the resistive strip when substantially no liquid remains in the vessel.

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