Patents by Inventor Rudiger Grau

Rudiger Grau 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 for the inductive heating of a refractory mold part as well as corresponding mold part for such
    Patent number: 6148903
    Abstract: A refractory guide member and a method for heating the refractory guide member by use of an inductor, where at least one collateral electromagnetic field located in a region spaced apart from the inductor is generated by the inductor. The mold part is made of an electrically conductive layer with several insulating interrupting slots for the controlled deflection of eddy currents from a main field generated by the inductor into a region spaced apart from the inductor.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: November 21, 2000
    Assignee: Didier-Werke AG
    Inventors: Raimund Bruckner, Rudiger Grau, Daniel Grimm, Seyed Masoud Hashemi, Karl-Heinz Spitzer
  • Method and apparatus for inductively heating a refractory shaped member
    Patent number: 5902509
    Abstract: A method and an apparatus for inductively heating a refractory shaped member provided with an internal space, particularly for a metallurgical vessel, enable as rapid, uniform heating of the shaped member as possible. An inner inductor is introduced into the internal space, the shaped member is heated from the interior by such inductor, and the inductor then is removed from the internal space.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: May 11, 1999
    Assignee: Dider-Werke AG
    Inventors: Raimund Bruckner, Rudiger Grau, Daniel Grimm, Steve Lee
  • Process for the inductive heating of a fireproof molding and a suitable molding therefor
    Patent number: 5901776
    Abstract: A refractory guide member and a method for heating the refractory guide member by use of an inductor, where at least one collateral electromagnetic field located in a region spaced apart from the inductor is generated by the inductor. The mold part is made of an electrically conductive layer with several insulating interrupting slots for the controlled deflection of eddy currents from a main field generated by the inductor into a region spaced apart from the inductor.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: May 11, 1999
    Assignee: Didier-Werke AG
    Inventors: Raimund Bruckner, Rudiger Grau, Daniel Grimm, Seyed Masoud Hashemi, Karl-Heinz Spitzer
  • Method and device for the casting of molten material to nearly final intended dimensions by commencing solidification of molten material in a casting nozzle passage while moving the solidifying material through the passage by ultrasonic vibrations
    Patent number: 5542466
    Abstract: A method of casting molten material into a strip-shaped product having substantially intended final dimensions that first supplies molten material into the interior of a vessel having a casting nozzle connected thereto. The nozzle is formed of a refractory ceramic material and has a passage extending therethrough from an inlet opening connected directly to the interior of the vessel to an outlet opening. The nozzle is oriented relative to the vessel so that the outlet opening is positioned at a location higher than the inlet opening. Molten material passes from the vessel interior directly through the inlet opening and into the passage until an upper level of molten material in the passage is the same as an upper level of molten material in the vessel interior and below the outlet opening. Solidification of the molten material is commenced in the passage, thereby forming solidifying material.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: August 6, 1996
    Assignee: Didier-Werke AG
    Inventors: Raimund Bruckner, Rudiger Grau