Patents by Inventor Holger Raaf

Holger Raaf 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).

  • Ignition coil, in particular for an internal combustion engine of a motor vehicle
    Patent number: 8439023
    Abstract: An ignition coil, in particular for an internal combustion engine of a motor vehicle, having a secondary winding situated on a coil body for the production of a high voltage at a spark plug, having a contact sleeve that electrically contacts the secondary winding and that is capable of being pushed over an end area of the coil body and that has at least one contact element for the secondary winding, and having a holding-down element that can be pushed over the contact sleeve and that acts on the at least one contact element of the contact sleeve. In its end position, the holding-down element protrudes beyond the at least one contact element of the contact sleeve, seen in the axial direction of the coil body, and covers the at least one contact element.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: May 14, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Konstantin Lindenthal, Johannes Kappeler, Holger Raaf, Thomas Breckle
  • IGNITION COIL, IN PARTICULAR, FOR AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
    Publication number: 20090301450
    Abstract: An ignition coil, in particular for an internal combustion engine of a motor vehicle, having a secondary winding situated on a coil body for the production of a high voltage at a spark plug, having a contact sleeve that electrically contacts the secondary winding and that is capable of being pushed over an end area of the coil body and that has at least one contact element for the secondary winding, and having a holding-down element that can be pushed over the contact sleeve and that acts on the at least one contact element of the contact sleeve. In its end position, the holding-down element protrudes beyond the at least one contact element of the contact sleeve, seen in the axial direction of the coil body, and covers the at least one contact element.
    Type: Application
    Filed: April 5, 2007
    Publication date: December 10, 2009
    Inventors: Konstantin Lindenthal, Johannes Kappeler, Holger Raaf, Thomas Breckle