Patents Assigned to Jero Incorporated
  • Patent number: 4857693
    Abstract: A method of forming stub ends used for joining pipes together by depositing successive layers of weld metal on the outer circumference of a rotating length of pipe. Initial layers having a common forward edge but of decreasing width are deposited to provide metal for the machining of a radius joining the flange to the pipe. Thereafter, successive layers of weld metal of substantially the same width and the same common forward edge are deposited to form the flange. The method is preferably practiced by inert gas shielded pinch arc welding to provide an integral flanged stub end made up completely of weld metal. The resulting structure is substantially uniform and homogeneous with a desirable grain structure, and is pore and defect free. The method further provides economical manufacture of flanged stub ends with relatively little waste of materials.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: August 15, 1989
    Assignee: Jero Incorporated
    Inventor: Jerome R. Rump