Patents Assigned to Jean La Force
  • Preparation of pipe ends for solid phase welding
    Patent number: 4392603
    Abstract: A system for preparing the abutting ends of pipe sections which are to be subsequently pressure welded together by the application of external heat to the joint and axial inward pressure on the respective pipe sections. The pipe ends are initially formed, or subsequently ground or cut so that the radially innermost portions of the ends are in contact with each other, and the radially outermost portions of the ends are slightly spaced from each other, preferably providing a radially outward diverging gap between the pipe ends.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: July 12, 1983
    Assignees: Carl Stringer, Stringer Oil & Gas Co., Jean La Force, Carl Thomas Stringer
    Inventor: Jean La Force