Patents by Inventor Darrell Dunning

Darrell Dunning 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).

  • Integrated collar, filter bag, cage and locking ring assembly for baghouses
    Patent number: 5290441
    Abstract: Disclosed is a filter assembly for use in a baghouse having a cell plate provided with openings. The filter assembly includes a collar, filter bag, tubular supporting cage and locking ring. The filter bag filters particulate material and extends below the cell plate. The collar supports the filer bag and has a longitudinally extended portion and a flange portion. The longitudinally extended portion is affixed to the filter bag below the cell plate, while the flange portion extends along the cell plate as a rim above a respective opening. The collar acts as a gasket to seal a respective opening in the cell plate. The tubular supporting cage has a longitudinally extended portion that supports the filter bag. The locking ring locks the filter bag, collar and cage in place. The locking ring can include a venturi affixed thereto to assist in filtering and cleaning operations.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: March 1, 1994
    Assignee: Hosokawa Micron International Inc.
    Inventors: James W. Griffin, Billy A. Bunn, Darrell Dunning, Larry E. Patterson
  • Integrated molded collar, filter bag, cage and locking ring assembly for baghouses
    Patent number: 5202021
    Abstract: Disclosed is a filter assembly for use in a baghouse having a cell plate provided with openings. The filter assembly includes a molded collar, filter bag, tubular supporting cage and locking ring. The filter bag filters particulate material and extends from below the cell plate. The collar supports the filter bag and has a longitudinally extended portion and a flange portion. The longitudinally extended portion is affixed to the filter bag below the cell plate, while the flange portion extends along the cell plate as a rim above a respective opening. The collar acts as a gasket to seal a respective opening in the cell plate. The tubular supporting cage structurally supports the filter bag and has a longitudinally extended portion and a collar portion. The longitudinally extended portion supports the filter bag, while the collar portion partially overlaps the flange portion of the collar. The locking ring locks the filter bag, collar and cage in place.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: April 13, 1993
    Assignee: Hosokawa Micron International Inc.
    Inventors: James W. Griffin, Billy A. Bunn, Darrell Dunning, Larry E. Patterson