Patents by Inventor Thomas Leitmann

Thomas Leitmann 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 switching off an inductive load in a failsafe manner
    Patent number: 7623326
    Abstract: A method and a device for switching off an inductive load in a failsafe manner are proposed. According to one aspect of the invention, the method and the device are configured such that a predefined inductive voltage is generated during switch-off. The predefined inductive voltage is monitored by means of a monitoring circuit. In a preferred embodiment, the inductive voltage is set by means of threshold switches and the inductive voltage also is monitored by means of these threshold switches.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: November 24, 2009
    Assignee: Pilz GmbH & Co. KG
    Inventors: Hans Schwenkel, Thomas Leitmann, Mark Hufnagel
  • Method and device for switching off an inductive load in a failsafe manner
    Publication number: 20060255786
    Abstract: A method and a device for switching off an inductive load in a failsafe manner are proposed. According to one aspect of the invention, the method and the device are configured such that a predefined inductive voltage is generated during switch-off. The predefined inductive voltage is monitored by means of a monitoring circuit. In a preferred embodiment, the inductive voltage is set by means of threshold switches and the inductive voltage also is monitored by means of these threshold switches.
    Type: Application
    Filed: May 3, 2006
    Publication date: November 16, 2006
    Inventors: Hans Schwenkel, Thomas Leitmann, Mark Hufnagel