Patents by Inventor William Douglas Woodson

William Douglas Woodson 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).

  • Patent number: 6739457
    Abstract: A deflector mounted on the internal surface of a cylindrical screen in a centrifugal pellet dryer. The deflector is one or more vertical strips mounted in spaced relation on the interior surface of the screen by bolting to mating mounting strips on the outside of the screen. The deflector strips deflect the pellets moving along the interior surface of the screen. The edge of the deflector strip facing the direction of movement of the circulating pellets is inclined to deflect the pellets back toward the rotor. In another form, the deflector strip has angled flanges with one flange clamped between outwardly extending vertical side edge flanges on the cylindrical screen. The other flange extends at an oblique angle to deflect the circulating pellets back toward the rotor.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: May 25, 2004
    Assignee: Gala Industries, Inc.
    Inventors: Toney Reid Humphries, II, William Douglas Woodson
  • Publication number: 20030033725
    Abstract: A deflector associated with the internal surface of a cylindrical screen in a conventional centrifugal pellet dryer. In a preferred form, the deflector is one or more vertical deflector strips mounted in circumferentially spaced relation on the interior surface of the dryer cylindrical screen by bolting to mating mounting strips on the outside of the screen. The deflector strips disrupt the circular flow of the particles along the interior surface of the screen. The edge of the deflector strip facing the direction of rotational movement of the rotor and circulating particles is preferably inclined to deflect the particles back toward the rotor. In another form, the elongated deflector strip has generally an angle iron shape with one flange clamped between the outwardly extending vertical side edge flanges which are bolted together to form the cylindrical screen and the other flange extending at an oblique angle into the clearance band to deflect the circulating particles back toward the rotor.
    Type: Application
    Filed: August 17, 2001
    Publication date: February 20, 2003
    Inventors: Toney Reid Humphries, William Douglas Woodson
  • Patent number: 6138375
    Abstract: An improved support ring is disclosed for a polymer resin pellet dryer screen of the type which includes cylindrical screen sections interconnected by two semicircular bands forming a support ring or connecting band. The support ring is positioned in spaced relation to an exterior housing by brackets, and the screen encloses a driven bladed rotor for removing water from a slurry of water and pellets. The improved support ring comprises a two piece annular ring including a generally perpendicular, rigid flange attached to the exterior of a semicircular band pair. The flange rigidities the bands of the ring and supports the adjacent ends of the screen sections from the external housing to maintain the screen in cylindrical configuration and in concentric relation to the bladed rotor rotatably positioned within the screen.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: October 31, 2000
    Assignee: Gala Industries, Inc.
    Inventors: Toney Reid Humphries, II, Todd Anthony Niccum, William Douglas Woodson