Patents by Inventor Keith K. Nelson

Keith K. Nelson 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).

  • Media vacuum filter
    Patent number: 6835315
    Abstract: An apparatus for removing solids from a liquid/solid mixture disposed in a tank and rising to a mixture level, the apparatus including a suction assembly defining a suction opening, the suction assembly linked to a vacuum that causes suction at the opening, a support assembly formed about the suction surface including first and second essentially circular housing walls having wall edges and a filter belt loop sealed to the edges and sized such that the belt is slack and subject to deformation between the edges, a belt section disposed to cover the suction opening and a processor controlling a motivator to periodically alter belt position with respect to the suction opening.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: December 28, 2004
    Assignee: Jorgensen Conveyors, Inc.
    Inventors: Robert J. Fox, Keith K. Nelson
  • Media vacuum filter
    Publication number: 20030010723
    Abstract: An apparatus for removing solids from a liquid/solid mixture disposed in a tank and rising to a mixture level, the apparatus including a suction assembly defining a suction opening, the suction assembly linked to a vacuum that causes suction at the opening, a support assembly formed about the suction surface including first and second essentially circular housing walls having wall edges and a filter belt loop sealed to the edges and sized such that the belt is slack and subject to deformation between the edges, a belt section disposed to cover the suction opening and a processor controlling a motivator to periodically alter belt position with respect to the suction opening.
    Type: Application
    Filed: September 16, 2002
    Publication date: January 16, 2003
    Inventors: Robert J. Fox, Keith K. Nelson
  • Media vacuum filter
    Patent number: 6475377
    Abstract: An apparatus for removing solids from a liquid/solid mixture disposed in a tank and rising to a mixture level, the apparatus including a suction assembly defining a suction opening, the suction assembly linked to a vacuum that causes suction at the opening, a support assembly formed about the suction surface including first and second essentially circular housing walls having wall edges and a filter belt loop sealed to the edges and sized such that the belt is slack and subject to deformation between the edges, a belt section disposed to cover the suction opening and a processor controlling a motivator to periodically alter belt position with respect to the suction opening.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: November 5, 2002
    Assignee: Jorgensen Conveyors, Inc.
    Inventors: Robert J. Fox, Keith K. Nelson