Patents by Inventor Martin Hechinger

Martin Hechinger 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).

  • Method and device for secure monitoring of a distance
    Patent number: 7768256
    Abstract: The invention relates to a method for securely monitoring a distance between a metallic part and an inductive proximity sensor, in particular for monitoring a closed position of a guard door in an automated system, said method having the steps of: providing an oscillating circuit, providing a metallic part made of a first material, driving the oscillating circuit with at least one pulse, such that a decaying oscillation is generated which is dependent on a distance between the metallic part and the oscillating circuit and which has an actual frequency and an actual attenuation, and signaling whether both the actual frequency undershoots a predefined maximum frequency and the actual attenuation undershoots a predefined maximum attenuation. The invention also relates to a signaling device for monitoring a distance between a metallic part and an inductive proximity sensor.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: August 3, 2010
    Assignee: Pilz GmbH & Co. KG
    Inventor: Martin Hechinger
  • METHOD AND DEVICE FOR SECURE MONITORING OF A DISTANCE
    Publication number: 20090219013
    Abstract: The invention relates to a method for securely monitoring a distance between a metallic part and an inductive proximity sensor, in particular for monitoring a closed position of a guard door in an automated system, said method having the steps of: providing an oscillating circuit, providing a metallic part made of a first material, driving the oscillating circuit with at least one pulse, such that a decaying oscillation is generated which is dependent on a distance between the metallic part and the oscillating circuit and which has an actual frequency and an actual attenuation, and signaling whether both the actual frequency undershoots a predefined maximum frequency and the actual attenuation undershoots a predefined maximum attenuation. The invention also relates to a signaling device for monitoring a distance between a metallic part and an inductive proximity sensor.
    Type: Application
    Filed: January 6, 2009
    Publication date: September 3, 2009
    Inventor: Martin HECHINGER