Patents by Inventor Berndt Gyllensten

Berndt Gyllensten 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).

  • Engine cylinder block and cylinder head fabricated from a grey cast iron alloy
    Patent number: 7419554
    Abstract: A grey cast iron alloy for producing cylinder block and/or cylinder head castings including iron, carbon, silicon, manganese, phosphorus, sulphur, tin, copper, chromium, molybdenum and nitrogen. The nitrogen content of the alloy is in the range of 0.0095-0.016 percent.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: September 2, 2008
    Assignee: Volvo Lastvagnar AB
    Inventors: Kent Eriksson, Tony Liu, Berndt Gyllensten, Johan Oberg
  • TEST
    Publication number: 20060008377
    Abstract: A grey cast iron alloy for producing cylinder block and/or cylinder head castings including iron, carbon, silicon, manganese, phosphorus, sulphur, tin, copper, chromium, molybdenum and nitrogen. The nitrogen content of the alloy is in the range of 0.0095-0.016 percent.
    Type: Application
    Filed: September 19, 2005
    Publication date: January 12, 2006
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Kent ERIKSSON, Tony LIU, Berndt GYLLENSTEN, Johan OBERG
  • Method and casting mold for the production of cast-iron cylinder liners
    Patent number: 5370170
    Abstract: A method for producing a cast-iron cylinder liner for piston engines in which a metal chill mold (1) is used which has a tubular mold cavity (2) lined with a layer of a hardening molding material or green sand (3). The melt (7) is introduced into the mold cavity from above in such a manner that the cooling effect from the chill mold and the lining provides a frontage of solidification directed upwardly from the bottom.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: December 6, 1994
    Assignee: AB Volvo
    Inventors: Bertil Sander, Sven-Erik Dahlberg, Tibor Szabo, Berndt Gyllensten