Patents by Inventor Martin Hoppenstedt

Martin Hoppenstedt 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).

  • Fuel injection valve for internal combustion engines
    Patent number: 6142122
    Abstract: A fuel injection valve for internal combustion engines. The valve includes a nozzle needle longitudinally displaceably guided in a nozzle body and having a tensioning nut which axially braces the nozzle body with a nozzle holder, optionally, by way of a transition piece whose respective faces rest on an adjacent face. The valve also includes at least one feed pipe extending in the nozzle holder and the nozzle body, and fuel-carrying transfer points between the nozzle holder and the nozzle body. A portion of at least one of interacting faces (3a; 4a) being constructed as a raised contact surface (11) with surface elements surrounding the fuel-carrying transfer points.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: November 7, 2000
    Assignee: DaimlerChrysler AG
    Inventor: Martin Hoppenstedt