Patents by Inventor Charles Clifford Berger

Charles Clifford Berger 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).

  • Publication number: 20190040817
    Abstract: A coating system includes a diffusion coating on a refractory metal or refractory metal alloy. The coating can be applied to a component such as a rocket engine component that includes a substrate including the refractory metal and is useful to protect the substrate from high temperature oxidation. The diffusion coating process employs an activator that includes a compound of the metal to be diffused into the surface of the substrate and is a vapor phase process in which the vapor includes metal from the activator and additional from the metal source being activated. Aluminum trifluoride can be used to activate an aluminum metal source to form an aluminide coating on a refractory metal-based alloy, such as a niobium alloy.
    Type: Application
    Filed: August 7, 2018
    Publication date: February 7, 2019
    Inventor: Charles Clifford BERGER
  • Publication number: 20180058228
    Abstract: A gas turbine component for use in a gas turbine engine includes a substrate a ceramic-based thermal barrier coating (TBC), and a diffusion chromide bond coat between the base material and the TBC. A thermally grown oxide (TGO) layer can be formed on the bond coat prior to application of the TBC. The TBC and the TGO include a common metal oxide. The oxide can be sacrificially in use and soluble in a molten sulfate salt, make the coating system particularly suitable for use in a marine environment.
    Type: Application
    Filed: August 25, 2017
    Publication date: March 1, 2018
    Inventors: Charles Clifford BERGER, David John WORTMAN
  • Patent number: 9718255
    Abstract: A metal article such as a gas turbine component may include a super-diffusion coating with unusually high content of the desired constituent. The coating may be provided by combining two or more diffusion coating processes, each process interdiffusing the desired constituent with the metal article from a different metal source. The metal article can be placed in physical contact with a metal source in powder form as a first source, and the article can also be exposed an additional metal vapor source. Super-chromide coatings can be produced with alpha-chrome content in a manner that also provides the coating with sufficient ductility for long-term durability. For example, a shank portion of a gas turbine blade may be provided with a chromide coating with at least a portion of the coating having from 60-90% chromium content.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: August 1, 2017
    Assignee: Barson Composites Corporation
    Inventor: Charles Clifford Berger
  • Patent number: 9297089
    Abstract: A gas turbine component for use in a gas turbine engine includes a substrate and a non-aluminide protective coating with a platinum-group metal. The platinum-group metal resides in a gamma-prime phase of the underlying material. The platinum-group metal can impart the protective coating with superior corrosion-resistance, while the absence of aluminide in the protective coating facilitates use of the protective coating at high-stress and/or high-fatigue portions of the component. The protective coating optionally includes chromide and can also be combined with aluminide at select portions of the component.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: March 29, 2016
    Assignee: Barson Composites Corporation
    Inventors: Charles Clifford Berger, David John Wortman
  • Publication number: 20130011270
    Abstract: A gas turbine component for use in a gas turbine engine includes a substrate and a non-aluminide protective coating with a platinum-group metal. The platinum-group metal resides in a gamma-prime phase of the underlying material. The platinum-group metal can impart the protective coating with superior corrosion-resistance, while the absence of aluminide in the protective coating facilitates use of the protective coating at high-stress and/or high-fatigue portions of the component. The protective coating optionally includes chromide and can also be combined with aluminide at select portions of the component.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 10, 2013
    Applicant: BARSON COMPOSITES CORPORATION
    Inventors: Charles Clifford Berger, David John Wortman