Patents by Inventor Leiv Adne Folkedal

Leiv Adne Folkedal 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).

  • Process of connecting a heat exchanger tube to a manifold and tube especially made therefor
    Publication number: 20040035916
    Abstract: A process of brazing an end portion of a heat exchanger tube to a manifold, and a tube therefor comprising at least one fluid passage having an opening in the end portion. The process involves depositing a stop-off containing coating on at least part of the end portion of the tube, assembling the tube to the manifold by inserting the end portion of the tube through an opening in a wall of the manifold, and then brazing the tube to the manifold wall. The coating inhibits brazing material from entering the opening of the tube fluid passage.
    Type: Application
    Filed: September 15, 2003
    Publication date: February 26, 2004
    Inventors: Morton Syslak, Ed Morley, Leiv Adne Folkedal, Borg Bjorneklett
  • Manifold for heat exchanger and process therefor
    Patent number: 6604669
    Abstract: Manifold for a heat exchanger intended to be joined by brazing or soldering to heat transfer tubes. A portion of a surface of the manifold that will be joined to the tubes is proved with at least one recess in which a brazing material is mechanically locked.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: August 12, 2003
    Assignee: Norsk Hydro, A.S.
    Inventors: Morten Syslak, Leiv Adne Folkedal, Antonio Baldantoni