Patents by Inventor Robert W. Mahar

Robert W. Mahar 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).

  • On-wing combustor cleaning using direct insertion nozzle, wash agent, and procedure
    Patent number: 7531048
    Abstract: A cleaning method for a combustor comprises positioning a spray portion of a nozzle through an igniter plug boss and spraying an acid solution inside the combustion chamber. The acid solution impinges the inner liner and the outer liner, dissolving contaminant deposits inside the effusion holes. The nozzle can have a second spray portion outside the combustion chamber to provide acid solution to the radially outward surface of the outer liner. After cleaning, distilled water is sprayed through the nozzle to remove the acid solution residue from the combustor. The used acid solution and distilled water can be collected, filtered and pumped through the nozzle to provide a recirculating cleaning/rinsing system.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: May 12, 2009
    Assignee: Honeywell International Inc.
    Inventors: Gregory O. Woodcock, Robert W. Mahar, William Tesch, Richard A. Bonvouloir, John C. Saunders, Udo Schuelke
  • ON-WING COMBUSTOR CLEANING USING DIRECT INSERTION NOZZLE, WASH AGENT, AND PROCEDURE
    Publication number: 20090084411
    Abstract: A cleaning method for a combustor comprises positioning a spray portion of a nozzle through an igniter plug boss and spraying an acid solution inside the combustion chamber. The acid solution impinges the inner liner and the outer liner, dissolving contaminant deposits inside the effusion holes. The nozzle can have a second spray portion outside the combustion chamber to provide acid solution to the radially outward surface of the outer liner. After cleaning, distilled water is sprayed through the nozzle to remove the acid solution residue from the combustor. The used acid solution and distilled water can be collected, filtered and pumped through the nozzle to provide a recirculating cleaning/rinsing system.
    Type: Application
    Filed: February 7, 2005
    Publication date: April 2, 2009
    Applicant: Honeywell International Inc.
    Inventors: Gregory O. Woodcock, Robert W. Mahar, William Tesch, Richard A. Bonvouloir, John C. Saunders, Udo Schuelke