Patents by Inventor David Warnica

David Warnica 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).

  • Apparatus for stabilization and deceleration of supersonic flow incorporating a diverging nozzle and perforated plate
    Patent number: 8176941
    Abstract: An apparatus is disclosed for reducing pressure and velocity of a particulate-laden, supersonic vent gas stream from a pressure vessel such as an autoclave. The apparatus includes a diverging duct in which the vent gas expands, and a perforated plate located inside the diverging duct. The perforated plate provides an area reduction that increases back pressure and forces an upstream normal shock in the diverging duct, thereby bringing about a desired reduction in pressure and velocity. The perforated plate is comprised of a material, such as a ceramic, that is resistant to erosion by the abrasive particulate entrained in the high velocity vent gas. The perforated plate has a central portion provided with holes and an imperforate peripheral portion which is resiliently received between connection flanges of the duct.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: May 15, 2012
    Assignee: Hatch Ltd.
    Inventors: David Warnica, Albert J. Koning, Michael Franceschini, Jennifer Woloshyn
  • APPARATUS FOR STABILIZATION AND DECELERATION OF SUPERSONIC FLOW INCORPORATING A DIVERGING NOZZLE AND PERFORATED PLATE
    Publication number: 20100071793
    Abstract: An apparatus is disclosed for reducing pressure and velocity of a particulate-laden, supersonic vent gas stream from a pressure vessel such as an autoclave. The apparatus includes a diverging duct in which the vent gas expands, and a perforated plate located inside the diverging duct. The perforated plate provides an area reduction that increases back pressure and forces an upstream normal shock in the diverging duct, thereby bringing about a desired reduction in pressure and velocity. The perforated plate is comprised of a material, such as a ceramic, that is resistant to erosion by the abrasive particulate entrained in the high velocity vent gas. The perforated plate has a central portion provided with holes and an imperforate peripheral portion which is resiliently received between connection flanges of the duct.
    Type: Application
    Filed: December 1, 2009
    Publication date: March 25, 2010
    Applicant: Hatch Ltd.
    Inventors: David Warnica, Albert J. Koning, Michael Franceschini, Jennifer Woloshyn