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Aircraft windshield defogging/deicing system and method of use thereof

  • US 7,928,345 B2
  • Filed: 10/22/2004
  • Issued: 04/19/2011
  • Est. Priority Date: 10/22/2004
  • Status: Active Grant
First Claim
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1. An aircraft windshield defogging/deicing system comprising:

  • a pair of transparent sheets maintained in spaced facing relation by a transparent interlayer;

    a resistive coating positioned between the pair of transparent sheets; and

    an inverter for applying a square wave or quasi-square wave AC signal to the resistive coating;

    , wherein;

    the inverter includes inverting circuitry for inverting an input DC signal into the AC signal, and a controller responsive to the input DC signal for outputting to the inverter one or more control signals which cause the inverter to invert the input DC signal into the AC signal;

    the AC signal is an AC voltage;

    the DC signal is a DC voltage;

    the DC voltage has avalue ranging from 24-32 volts DC; and

    the AC voltage has a value ranging from 115-230 volts AC RMS.

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