Patents by Inventor Frank Dornenburg

Frank Dornenburg 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).

  • Method and device for producing a piston fro an internal combustion engine and piston for internal combustion engine
    Patent number: 8898898
    Abstract: The invention relates to a method for producing a piston for an internal combustion engine, wherein a section which in the finished piston has a cooling duct (14) and a piston ring groove is recessed at first, the later cooling duct is then covered, and finally material for accommodating the piston ring is applied, and which is characterized in that the later cooling duct is covered by a wire material which is provided in a length, greater than necessary for one single piston. A device for producing a piston for an internal combustion engine with an at first recessed section that in the finished piston has a cooling duct (14) and a piston ring groove, has a device for attaching a cover on the cooling duct and a device for providing wire material having a length greater than necessary for one single piston.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: December 2, 2014
    Assignee: Federal-Mogul Nurnberg GmbH
    Inventors: Peter Godel, Marc-Manuel Matz, Wolfram Cromme, Klaus Lades, Frank Dornenburg
  • METHOD AND DEVICE FOR PRODUCING A PISTON FRO AN INTERNAL COMBUSTION ENGINE AND PISTON FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20120103298
    Abstract: The invention relates to a method for producing a piston for an internal combustion engine, wherein a section which in the finished piston has a cooling duct (14) and a piston ring groove is recessed at first, the later cooling duct is then covered, and finally material for accommodating the piston ring is applied, and which is characterized in that the later cooling duct is covered by a wire material which is provided in a length, greater than necessary for one single piston. A device for producing a piston for an internal combustion engine with an at first recessed section that in the finished piston has a cooling duct (14) and a piston ring groove, has a device for attaching a cover on the cooling duct and a device for providing wire material having a length greater than necessary for one single piston.
    Type: Application
    Filed: March 9, 2010
    Publication date: May 3, 2012
    Inventors: Peter Godel, Marc-Manuel Matz, Wolfram Cromme, Klaus Lades, Frank Dornenburg
  • Cylinder crankcase, procedure for manufacturing the cylinder bushings for the cylinder crankcase, and procedure for manufacturing the cylinder crankcase with these cylinder bushings
    Patent number: 7073492
    Abstract: A light metal cylinder crankcase for combustion engines has cylinder bushings with a running layer that forms the running surface and a rough, external bonding layer for bonding the cylinder bushings to the cylinder crankcase while pouring the cylinder crankcase. At least 60% of the bonding layer relative to the jacket surface of the bonding layer is connected with the casting material of the cylinder crankcase in a material tight manner.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: July 11, 2006
    Assignees: Atz-Evus Applikations-Und Technikzentrum, Hyrdro Aluminium Deutschland GmbH
    Inventors: Dietmar Hoffmann, Josef Steibl, Frank Dornenburg, Markus Nolte, Achim Sach, Berthold Aumuller, Klaus Dotzler
  • Cylinder crankcase, procedure for manufacturing the cylinder bushings for the cylinder crankcase, and procedure for manufacturing the cylinder crankcase with these cylinder bushings
    Publication number: 20040154577
    Abstract: A light metal cylinder crankcase for combustion engines has cylinder bushings with a running layer that forms the running surface and a rough, external bonding layer for bonding the cylinder bushings to the cylinder crankcase while pouring the cylinder crankcase. At least 60% of the bonding layer relative to the jacket surface of the bonding layer is connected with the casting material of the cylinder crankcase in a material tight manner.
    Type: Application
    Filed: September 25, 2003
    Publication date: August 12, 2004
    Inventors: Dietmar Hoffmann, Josef Steibl, Frank Dornenburg, Markus Nolte, Achim Sach, Berthold Aumuller, Klaus Dotzler
  • Cylinder crankcase, procedure for manufacturing the cylinder bushings for the cylinder crankcase, and procedure for manufacturing the cylinder crankcase with these cylinder bushings
    Publication number: 20020033161
    Abstract: A light metal cylinder crankcase for combustion engines has cylinder bushings with a running layer that forms the running surface and a rough, external bonding layer for bonding the cylinder bushings to the cylinder crankcase while pouring the cylinder crankcase. At least 60% of the bonding layer relative to the jacket surface of the bonding layer is connected with the casting material of the cylinder crankcase in a material tight manner.
    Type: Application
    Filed: April 11, 2001
    Publication date: March 21, 2002
    Inventors: Dietmar Hoffmann, Josef Steibl, Frank Dornenburg, Markus Nolte, Achim Sach