Patents by Inventor Lutz Rodehorst

Lutz Rodehorst 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).

  • Watchdog for voltage detector display
    Patent number: 9128129
    Abstract: The present invention relates to a watchdog timer dedicated to the display controller of a voltage detector wherein the watchdog determines a malfunction in the microcontroller and triggers a visual warning to be displayed via the display controller. This prevents inaccurate voltage information from being displayed in the case of a microcontroller malfunction and thereby the user from being exposed to the risk of extreme injury through, for example, a high-voltage shock.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: September 8, 2015
    Assignee: Fluke Corporation
    Inventor: Lutz Rodehorst
  • Shielded antenna for system test of a non-contact voltage detector
    Patent number: 8581609
    Abstract: A system and method of conducting a full system test on a non-contact voltage detector while simultaneously shielding the voltage detector's antenna from stray electric fields is disclosed. When a user runs the self-test, an alternating current generator capacitively couples to the antenna through an antenna shielding to detect any breaks in the antenna. The coupled signal is amplified and filtered by the voltage detector's electronics, and triggers an indicator if the voltage detector is fully operative.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: November 12, 2013
    Assignee: Fluke Corporation
    Inventors: Klaus Unmuessig, Armin Berard, Lutz Rodehorst
  • Watchdog For Voltage Detector Display
    Publication number: 20130057409
    Abstract: The present invention relates to a watchdog timer dedicated to the display controller of a voltage detector wherein the watchdog determines a malfunction in the microcontroller and triggers a visual warning to be displayed via the display controller. This prevents inaccurate voltage information from being displayed in the case of a microcontroller malfunction and thereby the user from being exposed to the risk of extreme injury through, for example, a high-voltage shock.
    Type: Application
    Filed: September 5, 2012
    Publication date: March 7, 2013
    Applicant: Fluke Corporation
    Inventor: Lutz Rodehorst
  • SHIELDED ANTENNA FOR SYSTEM TEST OF A NON-CONTACT VOLTAGE DETECTOR
    Publication number: 20100308852
    Abstract: A system and method of conducting a full system test on a non-contact voltage detector while simultaneously shielding the voltage detector's antenna from stray electric fields is disclosed. When a user runs the self-test, an alternating current generator capacitively couples to the antenna through an antenna shielding to detect any breaks in the antenna. The coupled signal is amplified and filtered by the voltage detector's electronics, and triggers an indicator if the voltage detector is fully operative.
    Type: Application
    Filed: June 2, 2010
    Publication date: December 9, 2010
    Applicant: Fluke Corporation
    Inventors: Klaus Unmuessig, Armin Berard, Lutz Rodehorst