Patents by Inventor Gavin J Baxter

Gavin J Baxter 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).

  • Joining method
    Patent number: 11628514
    Abstract: A method of joining a first component to a second component at respective connection surfaces, comprising, in order, applying a local surface treatment to the connection surface of at least one of the first and second components in order to locally alter the microstructure to a depth of between 60 ?m and 10 mm below the connection surface; and joining the first component to the second component using a welding process.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: April 18, 2023
    Assignee: ROLLS-ROYCE plc
    Inventors: Andrew R Walpole, John P E Forsdike, Gavin J Baxter, Simon E Bray, Alistair J E Smith
  • JOINING METHOD
    Publication number: 20200391323
    Abstract: A method of joining a first component to a second component at respective connection surfaces, comprising, in order, applying a local surface treatment to the connection surface of at least one of the first and second components in order to locally alter the microstructure to a depth of between 60 ?m and 10 mm below the connection surface; and joining the first component to the second component using a welding process.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 17, 2020
    Applicant: ROLLS-ROYCE plc
    Inventors: Andrew R WALPOLE, John PE FORSDIKE, Gavin J BAXTER, Simon E BRAY, Alistair JE SMITH
  • Additive layer repair of a metallic component
    Patent number: 10487659
    Abstract: A method of repairing a metallic component (formed from a first material) by powder feeding laser deposition, comprises the step of depositing a plurality of first repair layers onto a repair surface of the component to form a first repair zone, the first of the plurality of first repair layers comprising a mixture of A/B by weight of the first material and a second material, each nth successive one of the plurality of first repair layers comprising a change in the proportion of the second material in the mixture, the last of the plurality of first repair layers comprising a mixture of C/D by weight of the first material and the second material.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: November 26, 2019
    Assignee: ROLLS-ROYCE plc
    Inventors: Christopher P Heason, Gavin J Baxter
  • Determining the quality of a friction weld using a double differential
    Patent number: 8342382
    Abstract: A method of determining the quality of a friction weld between two components, the method comprising joining two components together using a friction welding process, measuring the loss of length of the components as a function of time during the friction welding process, determining the double differential with respect to time of the loss in length of the components as a function of time, determining the quality of the friction weld by calculating the R2 value of the linear fit to the loss in length of the components as a function of time over a defined time period, determining the end of the defined time period by identifying the start of the final positive peak of the double differential with respect to time of the loss of length of the components as a function of time, calculating R2 from the least square difference of the linear fit over the defined time period of the loss of length of the components as a function of time and comparing the calculated value of R2 with acceptable values of R2 to determine
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: January 1, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Gavin J Baxter, Mark G Horwell, Simon E Bray