Patents by Inventor David L. Roussel

David L. Roussel 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 of reducing dusting tendencies of conveyed particulate material
    Patent number: 5637349
    Abstract: A system and a process is provided for reducing the dust formation during the transfer of a particulate material on an endless conveyor belt. During transfer of the material on the conveyor belt the material is first sprayed with a wetting agent then by application of a plow the moving material is lifted from the bottom of the belt and is diverted towards the side edges of the belt thus creating additional exposed surfaces. The material is then again sprayed then contacted with baffles to redirect the material from the side edges towards the center of the belt thus creating additional exposed surfaces which are then again sprayed with a wetting agent to substantially eliminate dusting. The plow and baffle combination can also be used for uniformly mixing two or more particulate materials on a moving belt.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: June 10, 1997
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: David C. Cummins, David L. Roussel
  • Particulate material treatment system and conveyor belt mixing system
    Patent number: 5622561
    Abstract: A system and a process is provided for reducing the dust formation during the transfer of a particulate material on an endless conveyor belt. During transfer of the material on the conveyor belt the material is first sprayed with a wetting agent then by application of a plow the moving material is lifted from the bottom of the belt and is diverted towards the side edges of the belt thus creating additional exposed surfaces. The material is then again sprayed then contacted with baffles to redirect the material from the side edges towards the center of the belt thus creating additional exposed surfaces which are then again sprayed with a wetting agent to substantially eliminate dusting. The plow and baffle combination can also be used for uniformly mixing two or more particulate materials on a moving belt.
    Type: Grant
    Filed: July 25, 1995
    Date of Patent: April 22, 1997
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: David C. Cummins, David L. Roussel
  • Method of mixing particulate material using a conveyor belt mixing system
    Patent number: 5499873
    Abstract: A system and a process is provided for reducing the dust formation during the transfer of a particulate material on an endless conveyor belt. During transfer of the material on the conveyor belt the material is first sprayed with a wetting agent then by application of a plow the moving material is lifted from the bottom of the belt and is diverted towards the side edges of the belt thus creating additional exposed surfaces. The material is then again sprayed then contacted with baffles to redirect the material from the side edges towards the center of the belt thus creating additional exposed surfaces which are then again sprayed with a wetting agent to substantially eliminate dusting. The plow and baffle combination can also be used for uniformly mixing two or more particulate materials on a moving belt.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: March 19, 1996
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: David C. Cummins, David L. Roussel