Patents by Inventor Karl-Heinz Wittig

Karl-Heinz Wittig 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).

  • Magnet coil arrangement
    Patent number: 6848919
    Abstract: According to the invention, the coil of a magnet coil arrangement has a coil body which comprises a winding (14) and is extruded with plastic (17). A plug-in base with contact connectors is formed on the coil, wherein one of the connectors is used for connection of the grounding conductor (18). A metallic housing is placed over the coil. Connection of said metallic housing to the contact connector associated to the grounding conductor is achieved by means of a connection element which is guided through a recess of the plug-in base. A sealing element (42) disposed between the connection element and the recess prevents penetration of a fluid from a region between the metallic housing and the coil, into the region where a connector is connected to the contact connectors.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: February 1, 2005
    Assignees: Bosch Rexroth AG, Kern Technik GmbH & Co. KG
    Inventors: Matthias Stitz, Karl-Heinz Wittig, Hans-Jürgen Kern
  • Magnet coil arrangement
    Publication number: 20040183650
    Abstract: According to the invention, the coil of a magnet coil arrangement has a coil body which comprises a winding (14) and is extruded with plastic (17). A plug-in base with contact connectors is formed on the coil, wherein one of the connectors is used for connection of the grounding conductor (18). A metallic housing is placed over the coil. Connection of said metallic housing to the contact connector associated to the grounding conductor is achieved by means of a connection element which is guided through a recess of the plug-in base. A sealing element (42) disposed between the connection element and the recess prevents penetration of a fluid from a region between the metallic housing and the coil, into the region where a connector is connected to the contact connectors.
    Type: Application
    Filed: April 29, 2004
    Publication date: September 23, 2004
    Inventors: Matthias Stitz, Karl-Heinz Wittig, Hans-Jurgen Kern