Patents by Inventor David Brayshaw

David Brayshaw 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).

  • SYSTEMS, FORMULATIONS, AND METHODS FOR REMOVAL OF CERAMIC CORES FROM TURBINE BLADES AFTER CASTING
    Publication number: 20220266333
    Abstract: A solution is provided and includes a strong base, a corrosion inhibitor, wherein the strong base is an alkali metal hydroxide, wherein the corrosion inhibitor is at least one of an organic acid having a-COOH functional group or an alkali metal salt of one of an organic acid having a-COOH functional group.
    Type: Application
    Filed: April 5, 2022
    Publication date: August 25, 2022
    Applicant: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Lei Jin, Ryan C. Breneman, David Brayshaw
  • Systems, formulations, and methods for removal of ceramic cores from turbine blades after casting
    Patent number: 11370021
    Abstract: A solution is provided includes a strong base, a corrosion inhibitor, wherein the strong base is an alkali metal hydroxide, wherein the corrosion inhibitor is at least one of an organic acid having a-COOH functional group or an alkali metal salt of one of an organic acid having a-COOH functional group.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: June 28, 2022
    Assignee: Raytheon Technologies Corporation
    Inventors: Lei Jin, Ryan C. Breneman, David Brayshaw
  • SYSTEMS, FORMULATIONS, AND METHODS FOR REMOVAL OF CERAMIC CORES FROM TURBINE BLADES AFTER CASTING
    Publication number: 20210154733
    Abstract: A solution is provided comprising a strong base, a corrosion inhibitor, wherein the strong base is an alkali metal hydroxide, wherein the corrosion inhibitor is at least one of an organic acid having a-COOH functional group or an alkali metal salt one of an organic acid having a-COOH functional groups.
    Type: Application
    Filed: November 22, 2019
    Publication date: May 27, 2021
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Lei Jin, Ryan C. Breneman, David Brayshaw
  • Chamber with low turbulence argon purging system
    Patent number: 9566659
    Abstract: Apparatus and method for purging atmospheric air from a chamber with a gas including means for generating a substantially non-turbulent, laminar flow front of the gas into the chamber with minimal turbulence to displace the atmospheric air in the chamber, the chamber having exhaust means associated therewith to permit the displaced atmospheric air to exit the chamber. The chamber is preferably a welding chamber and the gas is preferably argon.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: February 14, 2017
    Assignee: PCC Structurals Inc.
    Inventors: Lee Patrick, David Brayshaw, Scott Wittkop, James Barrett, Ting-Kwo Lei
  • Chamber With Low Turbulence Argon Purging System
    Publication number: 20120199636
    Abstract: Apparatus and method for purging atmospheric air from a chamber with a gas including means for generating a substantially non-turbulent, laminar flow front of the gas into the chamber with minimal turbulence to displace the atmospheric air in the chamber, the chamber having exhaust means associated therewith to permit the displaced atmospheric air to exit the chamber. The chamber is preferably a welding chamber and the gas is preferably argon.
    Type: Application
    Filed: April 23, 2012
    Publication date: August 9, 2012
    Applicant: PCC STRUCTURALS INC.
    Inventors: Lee Patrick, David Brayshaw, Scott Wittkop, James Barrett, Ting-Kwo Lei
  • Low Turbulence Argon Purging System
    Publication number: 20110089225
    Abstract: Apparatus and method for purging atmospheric air from a chamber with a gas including means for generating a substantially non-turbulent, laminar flow front of the gas into the chamber with minimal turbulence to displace the atmospheric air in the chamber, the chamber having exhaust means associated therewith to permit the displaced atmospheric air to exit the chamber. The chamber is preferably a welding chamber and the gas is preferably argon.
    Type: Application
    Filed: October 13, 2010
    Publication date: April 21, 2011
    Applicant: PCC STRUCTURALS INC.
    Inventors: Lee Patrick, David Brayshaw, Scott Wittkop, James Barrett, Ting-Kwo Lei