Patents by Inventor Douglas J. ANGUS

Douglas J. ANGUS 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).

  • Pressure indicator
    Patent number: 8667848
    Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurized fluid. A passage which provides a flow path for the pressurized fluid.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: March 11, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Douglas J. Angus, Alexander E. H. Fitzhugh
  • Pressure indicator
    Patent number: 8650962
    Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. The first inlet pipe defines a nominal communication path length between the first enclosed volume and a first source of pressurised fluid. A member is provided in the first inlet pipe which defines one or more communication paths of greater length to that of the nominal communication path length.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: February 18, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Douglas J. Angus, Alexander E. H. Fitzhugh
  • Pressure indicator
    Patent number: 8573061
    Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. A damping passage is provided in fluid communication with the first enclosed volume. A pressure oscillation damping means is provided in the damping passage. The damping means comprises a moveable body constrained within a limited range of motion along the damping passage.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: November 5, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Douglas J. Angus, Alexander E. H. Fitzhugh
  • PRESSURE INDICATOR
    Publication number: 20120090397
    Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. A passage which provides a flow path for the pressurised fluid.
    Type: Application
    Filed: September 6, 2011
    Publication date: April 19, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Douglas J. ANGUS, Alexander E.H. FITZHUGH
  • PRESSURE INDICATOR
    Publication number: 20120090531
    Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. A damping passage is provided in fluid communication with the first enclosed volume. A pressure oscillation damping means is provided in the damping passage. The damping means comprises a moveable body constrained within a limited range of motion along the damping passage.
    Type: Application
    Filed: September 6, 2011
    Publication date: April 19, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Douglas J. ANGUS, Alexander E. H. FITZHUGH
  • PRESSURE INDICATOR
    Publication number: 20120090530
    Abstract: A pressure indicator for indicating pressure of a pressure source. The indicator comprises a first reservoir which defines a first enclosed volume having a first inlet pipe for communication between the first enclosed volume and a first source of pressurised fluid. The first inlet pipe defines a nominal communication path length between the first enclosed volume and a first source of pressurised fluid. A member is provided in the first inlet pipe which defines one or more communication paths of greater length to that of the nominal communication path length.
    Type: Application
    Filed: September 6, 2011
    Publication date: April 19, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Douglas J. ANGUS, Alexander E.H. FITZHUGH, Michael T. TURNER