Patents by Inventor Helmut Engelen

Helmut Engelen 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).

  • Double clutch transmission
    Publication number: 20060169571
    Abstract: A double clutch drive has two oil-immersed clutches. At least one of the clutches includes at least one wearable element that is partially or wholly composed, at least on the surface area thereof, of carbon-containing material. The assembly is set optimized for a friction factor characteristic. The double clutch drive according to the invention has a friction factor (?) with respect to a sliding speed (mm/s) that remains positive and continuous.
    Type: Application
    Filed: November 30, 2005
    Publication date: August 3, 2006
    Inventors: Helmut Engelen, Thomas Elfrath, Roland Denecke
  • Motor vehicle having a common liquid supply for a liquid-cooled drive engine and hydraulic power steering
    Patent number: 5501184
    Abstract: A motor vehicle having a liquid-cooled engine and a hydraulic power steering arrangement has a single liquid reservoir and a single pump which supply coolant both to a liquid-coolant circuit for the engine and to the hydraulic power steering arrangement.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: March 26, 1996
    Assignee: Volkswagen AG
    Inventors: Helmut Engelen, Horst Nikl