Electrically Heatable Windshield and Backlite System

A new quick-defrost system for automotive use has been developed as an option for the 1974 T-Bird and Mark IV carlines. It can defrost the heated area of the windshield and backlite within 3.5-5 minutes under standard test conditions at 0°F. The system evolved from aircraft defrost applications. A summary of the development work required in power sources, power levels, product and process requirements, and quality standards is presented.