Patents by Inventor Harald Naess

Harald Naess 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).

  • Patent number: 8905119
    Abstract: Equipment for the semi-continuous direct chill (DC) casting of sheet ingot or slabs of different dimensions, in particular for rolling purposes. The equipment includes a mold frame (2) with a pair of facing long side walls (3) and a pair of facing short end walls (4) where the walls define an upwardly open inlet for the supply of metal and a downwardly facing outlet. The outlet is provided with a starter block (6) on a movable support, which prior to each casting, closes the opening. The equipment includes a device for changing the mold dimensions where at least one end wall can be displaced to enable casting of different size ingots. The equipment further includes an arrangement for indirect and direct cooling of the metal during casting. The starter block is provided with short end walls (11) and long side walls (9). At least one short end wall is movable relative to the mold.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: December 9, 2014
    Assignee: Norsk Hydro ASA
    Inventors: Muhammad Umar Farooq Chandia, Harald Næss, Jr., Geir Atle Røen
  • Patent number: 8561669
    Abstract: Equipment for the semi-continuous direct chill (DC) casting of sheet ingot or slabs of different dimensions, in particular for rolling purposes, including a mold frame (2) with a pair of facing long side walls (3) and a pair of facing short end walls (4). The walls of the mold define an upwardly open inlet for the supply of metal and a downwardly facing outlet provided with a starter block (5) on a movable support which prior to each casting closes the opening. The equipment includes a device for changing the mold dimensions where at least one end wall can be displaced to enable casting of ingots with different sizes, and it further includes a device for indirect and direct cooling of the metal during casting. The equipment also includes apparatus for flexing the long side walls (3) of the mold, thereby enabling adjustment of the flexible middle part of the long side walls (3) inwardly or outwardly to adapt to the desired sheet ingot size, the desired casting speed and/or alloy composition.
    Type: Grant
    Filed: September 7, 2009
    Date of Patent: October 22, 2013
    Assignee: Norsk Hydro ASA
    Inventors: Harald Næss, Jr., Terje Iveland, Arild Håkonsen, Tore Strandheim, Ulf Bersås
  • Publication number: 20130255904
    Abstract: Equipment for the semi-continuous direct chill (DC) casting of sheet ingot or slabs of different dimensions, in particular for rolling purposes. The equipment includes a mould frame (2) with a pair of facing long side walls (3) and a pair of facing short end walls (4) where the walls define an upwardly open inlet for the supply of metal and a downwardly facing outlet. The outlet is provided with a starter block (6) on a movable support which prior to each casting closes the opening.
    Type: Application
    Filed: October 17, 2011
    Publication date: October 3, 2013
    Inventors: Muhammad Umar Farooq Chandia, Harald Næss, JR., Geir Røen
  • Publication number: 20110315339
    Abstract: Equipment for the semi-continuous direct chill (DC) casting of sheet ingot or slabs of different dimensions, in particular for rolling purposes, including a mould frame (2) with a pair of facing long side walls (3) and a pair of facing short end walls (4). The walls of the mould define an upwardly open inlet for the supply of metal and a downwardly facing outlet provided with a starter block (5) on a movable support which prior to each casting closes the opening. The equipment includes means for changing the mould dimensions where at least one end wall can be displaced to enable casting of ingots with different sizes, and it further includes means for indirect and direct cooling of the metal during casting.
    Type: Application
    Filed: September 7, 2009
    Publication date: December 29, 2011
    Inventors: Harald Næss, JR., Terje Iveland, Arild Håkonsen, Tore Strandheim, Ulf Bersås
  • Patent number: 4962807
    Abstract: A continuous or semi-continuous casting apparatus of the direct chill type for casting metallic materials, particularily recctangular ingots of aluminium, includes a mold which has an open inlet for the filling of molten metal into a mold cavity having an open outlet with a water supply for cooling of the metal. The mold cavity is, at a position spaced from its inlet, provided with a permeable ring for the supply of oil and/or gas, such that a layer of oil and/or gas is formed between the metal and mold wall, whereby the metal is prevented from coming into contact with the mold wall before it solidifies. The surfaces of the ring, with the exception of the side facing the mold cavity, are provided with a sealing agent which prevents the oil and/or gas from escaping through such surfaces.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: October 16, 1990
    Assignee: Norsk Hydro a.s.
    Inventors: Harald Naess, Jan Sivertsen