Patents Assigned to Robert Jenkins & Co.
  • Welding of tubes to tube plates
    Patent number: 4481399
    Abstract: Welding of tubes to tube plates using a non-consumable electrode to locally melt the wall of a tube and an adjacent area of the tube plate where the tube has been entered into a hole in the tube plate and including an initial weld preparation comprising the machining of one face of the tube plate to produce respective annular grooves concentrically around the holes into which the tubes are subsequently to be entered for welding.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: November 6, 1984
    Assignee: Robert Jenkins & Co.
    Inventor: Alan Greenfield