Patents by Inventor Laurits Aage Berg Larsen

Laurits Aage Berg Larsen 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).

  • Casting method and apparatus
    Patent number: 6698494
    Abstract: The present invention relates to a method for casting ferrous or heavy metal articles in vertically parted sand moulds of a mould string plant through an inlet below or aside the mould cavity, by filling the moulds with molten metal by counter-gravity delivery using a source of pressure. The pressure is varied during the filling procedure to steer the flow speed and impact on the mould of the molten metal upon complete filling of the mould cavity is reduced.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: March 2, 2004
    Assignee: Disa Industries A/S
    Inventors: Preben Nordgaard Hansen, Uffe Andersen, Laurits Aage Berg Larsen