Ppg Industries Ohio, Inc.

Ali N Rashid

Robert M Hunia

Caroline S Harris

Yu Jiao

Harry Buhay

John D Basil

Monroe A Stone

James Franklin Priddy

Joseph Medzius

Hars Gyorgy

An electrical system responsive to overheating and/or electric arcing of an electrically conductive member, e.g. a heating member of an aircraft windshield, includes a first switch in a first current path, and a second switch in a second current path. The first current path is from an electrical power supply through the first switch, through an arc sensor to the heating member to the power supply. The second current path is from a temperature sensor monitoring the temperature of the heating member through the second switch to a temperature controller. When the temperature of the heating member is at or above a predetermined value, the temperature controller causes the first switch to open. When there is arcing, the second switch is moved to the open position. The temperature controller senses that the second switch is open and causes the first switch to open.

Electric circuit and sensor for detecting arcing and a transparency having the circuit and sensor

Repair or replacement of a transparency mounted in body of a vehicle, e.g. an aircraft when one or more properties of the transparency is (are) operating outside of an acceptable limit(s) is arranged by monitoring operating performance of a property of the transparency, e.g. by mounted a sensor, e.g. a sensor for detecting moisture; a sensor for detecting impacts and vibrations; a sensor for detecting fractures; a sensor for detecting electric arcing, and a sensor for measuring temperature of an electrically conductive coating, on the transparency. Scheduling repair or replacement of the transparency at a geographical area when the operating performance of the property is outside an acceptable operating performance limit, and forwarding the schedule to the vehicle and to a maintenance location to prepare for the repair or replacement of the transparency at the geographical work area.

Method of and system for maintaining operating performance of a transparency

A transparency, e.g. an aircraft laminated windshield, includes one or more sensors to monitor performance of one or more properties, e.g. a heating arrangement of the windshield, and to generate signals representative of the performance of the properties. One part of a connector, external of the transparency and connected to the sensors is connected to a system positioned in the aircraft. The system receives a signal from each of the sensors, and processes the signals to determine difference between performance of the property as indicated by the signal received and a preferred performance of the property to provide real time monitoring of the performance of the windshield. With this arrangement information regarding the performance of the windshield is available to schedule timely repair or replacement of the windshield that is performing outside of acceptable limits.

Transparency having sensors

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Covington, KY, United States of America

Ali N Rashid