The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2006
Filed:
Jul. 11, 2005
Ralf Bager, Oberursel, DE;
Ralf Bager, Oberursel, DE;
Diehl Avionik Systeme GmbH, Ueberlingen, DE;
Abstract
A printed circuit card made of plastic has a carbonization sensor for protection against smoldering electrical fires. The carbonization sensor contains a first and a second conductor track disposed on the printed circuit card and also a monitoring device. The two conductor tracks are electrically insulated from one another by the plastic, and the monitoring device monitors an insulating state of the two conductor tracks in relation to one another and produces a fault signal. Local overheating of the printed circuit card is detected at an early time by the carbonization sensor, before an avalanche effect caused by the carbonization, which makes the printed circuit card electrically conductive, leads to a smoldering electrical fire.