Patents by Inventor Joseph D. Dombrowski

Joseph D. Dombrowski 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).

  • Ash control valve for a circulating fluidized bed combustor
    Patent number: 5752451
    Abstract: An ash control valve apparatus, for use in a system that includes a fluidized-bed system, including a housing, a seat in the housing for passage of particulate material, a plug dimensioned and configured for mating engagement with the seat; and apparatus for moving the plug from a first position wherein the plug is disposed in seated engagement with the seat and a second position wherein the plug is disposed in spaced relationship to the seat. The apparatus for moving the plug includes apparatus for mounting the plug, that includes an elongated tube to which the plug is fixed. The apparatus for axially moving the tube includes a cylinder and piston assembly; and a clamp engaging the tube and operatively connected to the cylinder of the cylinder and piston assembly.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: May 19, 1998
    Assignee: Combustion Engineering, Inc.
    Inventors: Yoram Schaker, Joseph D. Dombrowski, Raymond C. Germain
  • Ash control valve for a circulating fluidized bed combustor
    Patent number: 5642676
    Abstract: An ash control valve apparatus for use in a system that includes a fluidized-bed system which includes a housing, a seat in the housing for passage of particulate material, a plug dimensioned and configured for mating engagement with the seat, and apparatus for moving the plug from a first position wherein the plug is disposed in seated engagement with the seat to a second position wherein the plug is disposed in spaced relationship to the seat. The apparatus for moving the plug includes apparatus for mounting the plug that includes an elongated tube to which the plug is fixed. The apparatus for mounting includes a plurality of axially extending ribs disposed on the circumference of the elongated tube and a plurality of channels disposed in a bore in the plug.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: July 1, 1997
    Assignee: Combustion Engineering, Inc.
    Inventors: Yoram Schaker, Joseph D. Dombrowski, Raymond C. Germain