Patents by Inventor Roland Narholm

Roland Narholm 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).

  • Cooling device
    Patent number: 5684346
    Abstract: The invention concerns a cooling device for an electrically driven mixer operating in hot liquids.The motor (1) is surrounded by a cooling jacket (5) having inlet (8) and outlet (9) for cooling medium.The jacket (5) is provided with a concentric partition wall (6) which devide the room inside the jacket into two gaps (7) and (8) respectively of different widths.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: November 4, 1997
    Assignee: ITT Flygt AB
    Inventors: Jan Mickos, Roland Narholm, Per Stjerna, Peter Uvemo
  • Method and a device for installation of a mixer
    Patent number: 4721392
    Abstract: A method and a device for installation of a mixer in a liquid tank is provided wherein the mixer is brought downwards into the tank along a guide which is pivotally attached in the upper part of the tank. During operation the reaction force from the impeller will cause the guide to pivot making the mixer take support against the tank wall.
    Type: Grant
    Filed: April 3, 1986
    Date of Patent: January 26, 1988
    Assignee: Flygt AB
    Inventors: Hjalmar Fries, Roland Narholm, Bengt Thomaeus