Patents by Inventor Frank Thomas Hugo Dörnenburg

Frank Thomas Hugo Dörnenburg 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).

  • Process for producing a piston for an internal combustion engine and piston for an internal combustion engine
    Patent number: 9216480
    Abstract: In a process for producing a piston for an internal combustion engine, a groove is worked into a cast piston blank proceeding from a combustion chamber cavity (20) in a largely radial direction and then closed to form a cooling duct. A cast piston for an internal combustion engine has a closure which is fitted after the casting and the machining between the cooling duct and a combustion chamber cavity (20).
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: December 22, 2015
    Assignee: Federal-Mogul Nurnberg GmbH
    Inventors: Arnd Baberg, Frank Thomas Hugo Dörnenburg, Klaus Lades
  • PROCESS FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE AND PISTON FOR AN INTERNAL COMBUSTION ENGINE
    Publication number: 20140190010
    Abstract: In a process for producing a piston for an internal combustion engine, a groove is worked into a cast piston blank proceeding from a combustion chamber cavity (20) in a largely radial direction and then closed to form a cooling duct. A cast piston for an internal combustion engine has a closure which is fitted after the casting and the machining between the cooling duct and a combustion chamber cavity (20).
    Type: Application
    Filed: March 27, 2012
    Publication date: July 10, 2014
    Inventors: Arnd Baberg, Frank Thomas Hugo Dörnenburg, Klaus Lades