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:
Feb. 02, 2016
Filed:
Dec. 17, 2012
Leopold Kostal Gmbh & Co. KG, Luedenscheid, DE;
Martin Wagner, Luedenscheid, DE;
Werner Thormann, Halver, DE;
Meinolf Kathol, Finnentrop, DE;
Rainer Buehlmann, Holzwickede, DE;
Sven Kober, Bonn, DE;
Leopold Kostal GmbH & Co. KG, Luedenscheid, DE;
Abstract
A switch is formed by a branch including a measurement resistance and a selectable one of switching resistances having different nominal values such that a switch position depends on which switching resistance is selected. The measurement resistance is connected through the selected switching resistance to a supply voltage whereby a voltage drop dependent on the switch position is across the measurement resistance. A controller identifies the switch position by comparison of a measured value (U) of the voltage drop with target voltage drops corresponding to switch positions, calculates a voltage drop (Uges) across the branch based on nominal values of the measurement and selected switching resistances and the supply voltage, forms a difference value (U) between a measured value (U) of the supply voltage and the branch voltage drop (Uges), and qualifies the identified switch position as faulty when the difference value (U) exceeds a difference threshold value (U).