Patents by Inventor Gerard A. Sileo

Gerard A. Sileo 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).

  • Abrasive/abradable gas path seal system
    Patent number: 5932356
    Abstract: A composite ceramic coating having abrasive properties for application to a metallic substrate is provided which includes a ceramic matrix and a plurality of ceramic abrasive particles disposed within said ceramic matrix. The abrasive particles have a shear strength substantially greater than that of the ceramic matrix and possess an angular geometry. A method for providing an abrasive coating on a metallic article is also provided.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: August 3, 1999
    Assignee: United Technologies Corporation
    Inventors: Gerard A. Sileo, William J. Woodard, Frederick C. Walden, Harold W. Pettit, Jr., Timothy A. Twigg
  • Method for providing an abrasive coating on a metallic article
    Patent number: 5897920
    Abstract: A composite ceramic coating having abrasive properties for application to a metallic substrate is provided which includes a ceramic matrix and a plurality of ceramic abrasive particles disposed within said ceramic matrix. The abrasive particles have a shear strength substantially greater than that of the ceramic matrix and possess an angular geometry. A method for providing an abrasive coating on a metallic article is also provided.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: April 27, 1999
    Assignee: United Technologies Corporation
    Inventors: Gerard A. Sileo, William J. Woodard, Frederick C. Walden, Harold W. Pettit, Jr., Timothy A. Twigg
  • Method for producing an abradable seal
    Patent number: 5780116
    Abstract: A gas turbine abradable seal is prepared by plasma spraying an oxidation resistant metallic material and boron nitride. The resultant structure comprises a metallic matrix encompassing a lubricating amount of boron nitride, with porosity of less than about 15 percent and a fabricated surface roughness of less than about 600 microinches. The reduced surface roughness and substantially reduced permeability of this seal provide substantially enhanced engine efficiency, and improved durability.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: July 14, 1998
    Assignee: United Technologies Corporation
    Inventors: Gerard A. Sileo, John W. Appleby, Stephen T. Narsavage, Francis X. Alent, Charles G. Davis
  • Plasma sprayed abradable seals for gas turbine engines
    Patent number: 5536022
    Abstract: A gas turbine abradable seal is prepared by plasma spraying an oxidation resistant metallic material and boron nitride. The resultant structure comprises a metallic matrix encompassing a lubricating amount of boron nitride, with porosity of less than about 15 percent and a fabricated surface roughness of less than about 600 microinches. The reduced surface roughness and substantially reduced permeability of this seal provide substantially enhanced engine efficiency, and improved durability.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: July 16, 1996
    Assignee: United Technologies Corporation
    Inventors: Gerard A. Sileo, John W. Appleby, Stephen T. Narsavage, Francis X. Alent, Charles G. Davis
  • Liquid jet removal of plasma sprayed and sintered
    Patent number: 5167721
    Abstract: Gas turbine engine coatings must often be removed during engine maintenance and repair. The techniques utilized to accomplish this task, machining, chemical stripping, machining followed by chemical stripping, or grit blasting, frequently result in component damage or destruction. Liquid jet erosion can be utilized to remove seals, coatings, or portions thereof without damaging the engine hardware.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: December 1, 1992
    Assignee: United Technologies Corporation
    Inventors: Charles C. McComas, John W. Appleby, Jr., Gerard A. Sileo, Herbert R. Barringer, Michael J. Patry
  • Liquid jet removal of plasma sprayed and sintered coatings
    Patent number: RE35611
    Abstract: Gas turbine engine coatings must often be removed during engine maintenance and repair. The techniques utilized to accomplish this task, machining, chemical stripping, machining followed by chemical stripping, or grit blasting, frequently result in component damage or destruction. Liquid jet erosion can be utilized to remove seals, coatings, or portions thereof without damaging the engine hardware.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: September 23, 1997
    Assignee: Waterjet Systems, Inc.
    Inventors: Charles C. McComas, John W. Appleby, Jr., Gerard A. Sileo, Herbert R. Barringer, Michael J. Patry