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:
Jun. 12, 2012
Filed:
May. 19, 2009
Thomas Fischer, Wenden, DE;
Christian A. Fischer, Remscheid, DE;
Marcel Fruend, Remscheid, DE;
Kai Niederhagen, Wuppertal, DE;
Thomas Fischer, Wenden, DE;
Christian A. Fischer, Remscheid, DE;
Marcel Fruend, Remscheid, DE;
Kai Niederhagen, Wuppertal, DE;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A safety belt warning system for vehicles comprises a sensor mat for the detection of a force acting on its surface, which includes, for the formation of two electrical capacitors, two dielectric layers which are located one above the other in sandwich fashion and arranged in each case between electrically conductive coats, and which have different compressibility at least in the direction of loading due to force, so that the capacitances of the two capacitors vary differently with a load on the sensor mat.