Patents by Inventor Dietmar Hirsch

Dietmar Hirsch 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).

  • Drive shaft having a heat shield sleeve
    Patent number: 7740541
    Abstract: A drive shaft is provided with a sleeve enclosing at least sections thereof. The sleeve is fixed to the drive shaft in order that it may rotate with the drive shaft. The sleeve forms a heat shield with heat-reflecting and/or heat-insulating properties. This serves to effectively reduce the heat input into the drive shaft. In contrast to conventional heat shield plates, the problem of fixing is eliminated. Moreover, a heat shield sleeve according to the invention can also still be fitted in situations wherein the space is too restricted for a heat shield plate. In addition a savings in weight and material also results.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: June 22, 2010
    Assignee: Volkswagen AG
    Inventors: Dietmar Hirsch, Jürgen Linzmeier
  • Drive shaft having a heat shield sleeve
    Publication number: 20060094517
    Abstract: A drive shaft is provided with a sleeve enclosing at least sections thereof. The sleeve is fixed to the drive shaft in order that it may rotate with the drive shaft. The sleeve forms a heat shield with heat-reflecting and/or heat-insulating properties. This serves to effectively reduce the heat input into the drive shaft. In contrast to conventional heat shield plates, the problem of fixing is eliminated. Moreover, a heat shield sleeve according to the invention can also still be fitted in situations wherein the space is too restricted for a heat shield plate. In addition a savings in weight and material also results.
    Type: Application
    Filed: November 2, 2005
    Publication date: May 4, 2006
    Inventors: Dietmar Hirsch, Jurgen Linzmeier