Patents by Inventor Birgit Hudelmaier

Birgit Hudelmaier 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 an intermetallic join
    Patent number: 6112802
    Abstract: The aim is to improve the strength of an intermetallic bond between engine component made from an aluminium alloy and a reinforcing element made from austenitic cast iron. For that purpose, the reinforcing element is annealed in a decarbonising atmosphere before the known prior art alfin process is carried out, in order to obtain an alfin layer largely free of graphite scales.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: September 5, 2000
    Assignee: Mahle GmbH
    Inventors: Birgit Hudelmaier, Dieter Mueller-Schwelling, Detlef Schlosser
  • Reinforcing component of which the basic material is austenitic cast iron
    Patent number: 6063509
    Abstract: In a reinforcing component made from austenitic iron which is bonded intermetallically with an engine component made from an aluminium-base alloy, in particular a piston, the aim is to improve the strength of the bond irrespective of the graphite configuration in the base material. For that purpose, the structure at least on areas of the reinforcing component surface in the vicinity of the intermetallic bond is austenitic-ledeburitic.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: May 16, 2000
    Assignee: Mahle GmbH
    Inventors: Birgit Hudelmaier, Dieter Mueller-Schwelling, Detlef Schlosser