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:
May. 19, 2009
Filed:
Jul. 20, 2005
Stefan Flentge, Raunheim, DE;
Fausto Crespo Vidal, Langenselbold, DE;
Stefan Flentge, Raunheim, DE;
Fausto Crespo Vidal, Langenselbold, DE;
Samson AG, Frankfurt, Am Main, DE;
Abstract
A method for monitoring a the contact resistance (R) of the wiper of a sensor for a variable quantity, with a potentiometer (), in which the position of the center tap () determines the value of the quantity, is improved in such a way that, first, when the sensor is used in an automatic control circuit, no control deviations occur and, second, the contact resistance of the wiper can be monitored with precision. This is achieved by the cyclic switching-on of a load (R), so that the contact resistance (R) of the wiper can be determined on the basis of the change in the voltage divider ratio.