Patent 7961477 was granted and assigned to Siemens Aktiengesellschaft on June, 2011 by the United States Patent and Trademark Office.
A housing comprising a liquid-tight electric bushing is provided. The housing comprises an opening and a printed circuit board comprising at least first and second layers. The first layer is a top side of the printed circuit board and spans the opening. A first contact element is disposed on the top side and in a blind bore through the first layer that extends to the second layer. The second layer is a conductor track in the interior of the printed circuit board.