Patents by Inventor Kjell Lilja

Kjell Lilja 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: 4016737
    Abstract: A press for hydrostatic extrusion includes a pressure chamber for enclosing a pressure medium which is formed of a high pressure cylinder, a pressure generating piston, a die and a die support and seals. The die support includes an exchangeable support ring which engages the end surface of the liner and bridges the gap between the liner and the die. A metallic sealing ring is arranged within the liner in engagement therewith, forming a gap between the inner surface of the sealing ring and the outer surface of the die or die support. The die support has a groove in its upper surface which contains a sealing member against which the edge of the metallic sealing ring engages. The lower outer corner of the metallic sealing ring is bevelled to form a space which communicates with the outside of the press.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: April 12, 1977
    Assignee: Allmanna Svenska Elektriska Aktiebolaget
    Inventors: Sven-Goran Gustafsson, Hans Gunnar Larsson, Kjell Lilja, Bertil Lundback, Jan Nilsson, Pertti Syvakari