Patents Assigned to The Walton Mole Company Limited
  • Apparatus for cleaning and descaling pipe lines
    Patent number: 4205694
    Abstract: The invention comprises a cage mountable on a pipe line and bearing a carriage movable on the cage around the pipe line. The carriage supports an elongate arm to lie in the longitudinal direction of the pipe and has a jet cleaning head reciprocable along the arm to clean the exterior of the pipe line. The cage has driven rollers thereon to drive the cage along the pipe line; and an indexing mechanism is provided to step the carriage around the pipe line.
    Type: Grant
    Filed: July 14, 1978
    Date of Patent: June 3, 1980
    Assignee: The Walton Mole Company Limited
    Inventors: David R. Thompson, Douglas Walton, Thomas W. Bainbridge, Leslie Tibbels