Patents by Inventor Lawrence G. Hudson

Lawrence G. Hudson 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).

  • Oxide restraint during co-casting of metals
    Patent number: 8336603
    Abstract: A method and apparatus is disclosed for casting a composite ingot made of metals that are susceptible to surface oxide formation when molten. The method involves co-casting at least two metal layers from at least two molten metal pools formed within a direct chill casting apparatus. During the casting operation, movement of metal oxide formed on the upper surface of at least one of the pools towards an edge of the pool is restrained by an oxide skimmer positioned close to an edge of the pool above an external surface or metal-metal interface of the ingot. The apparatus provides a DC caster with at least one oxide skimmer that operates in this manner.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: December 25, 2012
    Assignee: Novelis Inc.
    Inventors: Todd F. Bischoff, Randy Womack, Wayne J. Fenton, Robert Bruce Wagstaff, Lawrence G. Hudson
  • Oxide restraint during co-casting of metals
    Publication number: 20090288795
    Abstract: A method and apparatus is disclosed for casting a composite ingot made of metals that are susceptible to surface oxide formation when molten. The method involves co-casting at least two metal layers from at least two molten metal pools formed within a direct chill casting apparatus. During the casting operation, movement of metal oxide formed on the upper surface of at least one of the pools towards an edge of the pool is restrained by an oxide skimmer positioned close to an edge of the pool above an external surface or metal-metal interface of the ingot. The apparatus provides a DC caster with at least one oxide skimmer that operates in this manner.
    Type: Application
    Filed: May 21, 2009
    Publication date: November 26, 2009
    Inventors: Todd F. Bischoff, Randy Womack, Wayne J. Fenton, Robert Bruce Wagstaff, Lawrence G. Hudson