Patents by Inventor Ulrich Ehrenfried

Ulrich Ehrenfried has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8508243
    Abstract: The inductive incremental displacement sensor is characterized in that the first sensor unit and the second sensor unit each have a first inductive sensor and a second inductive sensor disposed at a distance from each other and that the first sensor unit and the second sensor unit deliver a switching signal relevant to a conductive region of the graduated track when the difference or the ratio of the detection signals from the inductive sensors allocated to the respective sensor unit as generated by the conductive region is less than a specifiable threshold. Furthermore, the invention relates to a method for determining the displacement of a first object relative to a second object as well as to an inductive sensor unit.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: August 13, 2013
    Assignee: Pepperl + Fuchs GmbH
    Inventors: Christian Speckmann, Ulrich Ehrenfried
  • Publication number: 20100188104
    Abstract: The present invention relates to an inductive incremental displacement sensor for determining a displacement of a first object relative to a second object, comprising at least one graduated track mountable on the first object and having periodically alternating conductive regions and insulating regions, and having at least one scanning unit mountable on the second object for scanning the graduated track with a first sensor unit and a second sensor unit, which are laterally spaced from each other by a distance d=n*(p/2)+q, wherein n is an integer or zero, p is the pitch of the graduated track and 0 is <|q|<p/2, and, in particular, q=0.25 p and comprising an evaluation unit for determining the displacement on the basis of switching signals delivered by the first sensor unit and the second sensor unit.
    Type: Application
    Filed: March 3, 2008
    Publication date: July 29, 2010
    Inventors: Christian Speckmann, Ulrich Ehrenfried
  • Publication number: 20070205775
    Abstract: The present invention relates to a device for capacitive position finding of an object, with a plurality of capacitive probes distributed over an area in which a position of the object is to be established. According to the invention the device is characterized in that the probes are in each case connected by means of coupling capacitances to a voltage source and can be supplied with a supply voltage and that an evaluating device connected to the probes is provided permitting the processing of the probe signals to an output signal, which is a measure for the position of the object to be established. In further aspects the invention relates to a probe/sensor arrangement and a method for capacitive position finding of an object.
    Type: Application
    Filed: March 31, 2005
    Publication date: September 6, 2007
    Inventors: Hardi Voelkel, Ulrich Ehrenfried