Patents by Inventor Kjell Norrmen

Kjell Norrmen 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).

  • Falling film evaporator of the vertical-tube type
    Patent number: 4810327
    Abstract: In a falling film evaporator of the vertical-tube type in which liquid to be evaporated is supplied at the top on the outer surface of vertical heat exchanger tubes and the heat medium is supplied to the heat exchanger tubes at the bottom for flow inside the same, at least one larger tube element than the heat exchanger tubes is disposed between and fixed to tube plates at the both ends of the group of tubes to stabilize the group of tubes against tension and especially compression stresses.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: March 7, 1989
    Assignee: Ahlstromforetagen Svenska AB
    Inventor: Kjell Norrmen