Patents Assigned to Gelco Services, Inc.
  • Resin impregnation of absorbent material
    Patent number: 6207002
    Abstract: A method and apparatus for use in impregnating an absorbent fibrous layer or similar portion of a tubular liner with a curable resin material to prepare such a liner for installation into a pipe to repair the pipe. Several vacuum applicators such as hollow needles, all connected to a vacuum, are used simultaneously to evacuate air from the entire absorbent fibrous layer of the tubular liner, beginning at a time significantly before curable resin is first introduced to be absorbed. A timer is used to begin the evacuation automatically.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: March 27, 2001
    Assignee: Gelco Services, Inc.
    Inventors: Clinton Kelly Odell, Patrick J. Anderson