Patent ID: 7781705
Filing Date: 2010-08-24
Classification: H05B

Abstract:
1. A window defroster assembly comprising: a transparent plastic panel; a heater grid integrally formed with the plastic panel, the heater grid having a plurality of grid lines formed of a conductive material, whereby the plurality of grid lines heat via resistive heating when an electrical current from a power supply travels through each of the plurality of grid lines; and a means for equalizing the electrical current traveling through each of the grid lines, the means for equalizing being electrically connected to the plurality of grid lines, wherein the means comprises: a first busbar and a second busbar, the plurality of grid lines extending between the first and second busbars, the first and second busbars being made of a conductive material; a first metallic insert in electrical communication with the power supply and the first busbar, the first metallic insert being made of a conductive material that is more conductive than the conductive material of the first busbar; and a second metallic insert in electrical communication with the power supply and the second busbar, the second metallic insert being made of a conductive material that is more conductive than the conductive material of the second busbar.