Patents by Inventor Kostas Routsis

Kostas Routsis 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).

  • Method for applying an abrasive layer to titanium alloy compressor airfoils
    Patent number: 5074970
    Abstract: A method for providing an abrasive layer on the surface of a turbine engine component is described. The method includes application of several layers of nickel; one layer includes abrasive particulates. The layer has good bond strength and has a thin cross section, thereby minimizing any effect on the fatigue strength of the component.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: December 24, 1991
    Inventors: Kostas Routsis, Joseph J. Parkos, Jr., Melvin Freling
  • Method for electroplating nickel onto titanium alloys
    Patent number: 4902388
    Abstract: This invention relates to an improved method for electroplating a layer of nickel onto titanium base alloy substrates. It is particularly useful in electroplating a layer of nickel onto titanium alloys which contain refractory metal elements, such as the alloy Ti-8Al-1V-1Mo. The method includes the steps of etching the surface of the substrate with a solution containing hydrofluoric acid and hydrochloric acid, followed by electroplating the etched surface in a nickel sulfamate solution.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: February 20, 1990
    Assignee: United Technologies Corporation
    Inventors: Donald E. Fornwalt, Gary M. Lomasney, Kostas Routsis
  • Selective decomposition of a chromium carbide coating from a chromium carbide coated nickel alloy substrate
    Patent number: 4851093
    Abstract: A stripping process for the removal of plasma spray applied chromium carbide-nickel chromium coatings from nickel base alloy substrates is disclosed. The coating is decomposed electrolytically by immersing the coated substrate in an alkaline metal hydroxide solution to form the anode of an electrolytic cell and imposing a potential difference across the cells sufficient to decompose the coating without affecting the substrate.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: July 25, 1989
    Assignee: United Technologies Corporation
    Inventor: Kostas Routsis
  • Fatigue strengthened composite article
    Patent number: 4815940
    Abstract: A composite article includes a compressively stressed plating which provides increased static strength and fatigue life. In particular, a fan exit guide vane (1), made of a graphite fiber reinforced composite material and including a conductive plating (7), achieves a 380% increase in static load capability over an unplated composite vane and a low cycle fatigue life of over 1 million cycles through the application of a compressively stressed nickel plating (8) which produces a residual compressive stress state of between -5,000 and -15,000 psi.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: March 28, 1989
    Assignee: United Technologies Corporation
    Inventors: Jeffrey S. LeShane, Kostas Routsis, Charles R. Watson
  • Method for electroplating nickel onto titanium alloys
    Patent number: RE33800
    Abstract: This invention relates to an improved method for electroplating a layer of nickel into titanium base alloy substrates. It is particularly useful in electroplating a layer of nickel onto titanium alloys which contain refractory metal elements, such as the alloy Ti-8Al-1V-1Mo. The method includes the steps of etching the surface of the substrate with a solution containing hydrofluoric acid and hydrochloric acid, followed by electroplating the etched surface in a nickel sulfamate solution.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: January 21, 1992
    Assignee: United Technologies Corporation
    Inventors: Donald E. Fornwalt, Gary M. Lomasney, Kostas Routsis