Patents by Inventor Douglas S. Roy

Douglas S. Roy 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).

  • Method and apparatus for removing broken filaments
    Patent number: 6769240
    Abstract: A method and apparatus are provided for removing broken filaments from a continuous filament tow (60) traveling at a tow velocity between a source and a collector. The tow (60) is contacted with a rotatable, cylindrical roller (13), having an axis of rotation and an outer surface, located in the path of travel by the tow from the source to the collector. The axis of rotation is oriented generally perpendicular to the direction of travel of the tow (60). The roller (13) rotates in a direction counter to the direction of travel of the tow (60) to lift broken fibers from the tow. The lifted broken fibers are entrained in an airflow created by a tubular vacuum header (12) to remove the broken fibers from the tow.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: August 3, 2004
    Assignee: Fortafil Fibers, Inc.
    Inventors: Douglas S. Roy, James M. Clark
  • Method and apparatus for removing broken filaments
    Publication number: 20030029009
    Abstract: A method and apparatus are provided for removing broken filaments from a continuous filament tow (60) traveling at a tow velocity between a source and a collector. The tow (60) is contacted with a rotatable, cylindrical roller (13), having an axis of rotation and an outer surface, located in the path of travel by the tow from the source to the collector. The axis of rotation is oriented generally perpendicular to the direction of travel of the tow (60). The roller (13) rotates in a direction counter to the direction of travel of the tow (60) to lift broken fibers from the tow. The lifted broken fibers are entrained in an airflow created by a tubular vacuum header (12) to remove the broken fibers from the tow.
    Type: Application
    Filed: June 25, 2002
    Publication date: February 13, 2003
    Inventors: Douglas S. Roy, James M. Clark