Patents by Inventor William E. Milligan

William E. Milligan 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).

  • Apparatus for grinding the internal walls of pipes
    Patent number: 4327526
    Abstract: A grinder is supported within a pipe, the support being arranged to adjust the movement of the head of the grinder radially and axially of the pipe axis to bear against internal cracks in the pipe wall.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: May 4, 1982
    Assignee: Combustion Engineering, Inc.
    Inventors: William H. Pettyjohn, John T. Lewis, William E. Milligan, deceased
  • Reactor vessel closure stud cleaning machine
    Patent number: 4165549
    Abstract: A stud cleaning machine whereby the threaded portion of very large studs can be cleaned to a semi-bright finish. The cleaning machine is designed to completely enclose the studs during the cleaning operation, so that none of the loosened oxides, residues, and caked lubricants are discharged into the surrounding atmosphere. The contaminated particles are retained in the cleaning machine and removed through an attached vacuum cleaner.
    Type: Grant
    Filed: January 10, 1978
    Date of Patent: August 28, 1979
    Assignee: Combustion Engineering, Inc.
    Inventors: Edward A. Wennerstrom, James S. Brown, Sr., William E. Milligan