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:
Aug. 28, 2007
Filed:
Jun. 23, 2005
Hansjoerg Hachtel, Weissach, DE;
Stefan Meyer, Schwieberdingen, DE;
Hansjoerg Hachtel, Weissach, DE;
Stefan Meyer, Schwieberdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
With a method for the contactless determination of a thickness of a layer () made of electrically-conductive material of a component (), a sensor composed of a coil form () and a coil () is positioned in the vicinity of the component () to be measured. The method is based on a combination of the principles of induction and eddy current. The thickness of the layer () is determined using a plurality of measuring and evaluation steps in which the coil () is acted upon with a first alternating current frequency f and its inductance and resistance values are evaluated. The distance between the coil form () and, therefore, the coil (), and the component () is derived from the resistance value R of the coil () acted upon with alternating current frequency f.