Patents by Inventor Andrew W. Madden

Andrew W. Madden 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).

  • Fuel viscosity
    Patent number: 11988144
    Abstract: A method of operating a gas turbine engine including an engine core including a turbine, compressor, combustor to combust a fuel, and core shaft connecting the turbine and compressor; a fan upstream of the engine core; a fan shaft; a gearbox that receives an input from the core shaft and outputs drive to the fan via the fan shaft; a primary oil loop system to supply oil to the gearbox; and a heat exchange system. The method includes controlling the heat exchange system to adjust fuel viscosity to be lower than or equal to 0.58 mm2/s on entry to the combustor at cruise conditions.
    Type: Grant
    Filed: June 20, 2023
    Date of Patent: May 21, 2024
    Assignee: ROLLS-ROYCE plc
    Inventors: Craig W Bemment, Alastair G Hobday, Benjamin J Keeler, Christopher P Madden, Andrea Minelli, Andrew T Smith, Peter Swann, Martin K Yates
  • Combination cellular telephone stand and safety spacer
    Patent number: 8520838
    Abstract: A device for providing a stand with legs to support a cell phone on a flat surface, which stand may be pivoted into a spacer to maintain spacing between the phone and a user's head.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: August 27, 2013
    Inventor: Andrew W. Madden
  • COMBINATION CELLULAR TELEPHONE STAND AND SAFETY SPACER
    Publication number: 20130206931
    Abstract: A device for providing a stand with legs to support a cell phone on a flat surface, which stand may be pivoted into a spacer to maintain spacing between the phone and a user's head.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 15, 2013
    Inventor: Andrew W. Madden