Patents by Inventor Robert William Greenhalgh

Robert William Greenhalgh 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).

  • Superplastic forming and diffusion bonding process
    Patent number: 10850317
    Abstract: A process and apparatus for forming a structure comprising: a) forming a pack from a skin sheet and a core sheet, wherein venting grooves are formed in a surface of a sheet that is adjacent to the other sheet; b) placing the pack in a mould and heating the pack; c) injecting a first gas between the core and skin sheets to urge the skin sheet against the mould; d) injecting a second gas on the side of the core sheet remote from the skin sheet to urge the core sheet against the skin sheet; e) maintaining gas pressure of the second gas thereby diffusion bonding the sheets; and f) withdrawing some or all of the first gas from the cavity.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: December 1, 2020
    Assignee: BAE Systems plc
    Inventors: Robert William Greenhalgh, Howard James Price
  • SUPERPLASTIC FORMING AND DIFFUSION BONDING PROCESS
    Publication number: 20200238359
    Abstract: A process and apparatus for forming a structure comprising: a) forming a pack from a skin sheet and a core sheet, wherein venting grooves are formed in a surface of a sheet that is adjacent to the other sheet; b) placing the pack in a mould and heating the pack; c) injecting a first gas between the core and skin sheets to urge the skin sheet against the mould; d) injecting a second gas on the side of the core sheet remote from the skin sheet to urge the core sheet against the skin sheet; e) maintaining gas pressure of the second gas thereby diffusion bonding the sheets; and f) withdrawing some or all of the first gas from the cavity.
    Type: Application
    Filed: August 10, 2018
    Publication date: July 30, 2020
    Inventors: Robert William Greenhalgh, Howard James Price