Patents by Inventor Steven D. A. FLETCHER

Steven D. A. FLETCHER 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).

  • Protection system for an electrical power network
    Patent number: 8842401
    Abstract: A protection system is provided for an electrical power network. The system has one or more circuit breaker arrangements which on activation isolate electrical faults within the network, and one or more fault detectors. The or each fault detector measures an inductance of a respective section of the network. The system is configured to activate one or more of the circuit breaker arrangements in response to measured inductances which are indicative of a fault.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: September 23, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Jason E Hill, Steven D A Fletcher, Patrick J Norman, Stuart J Galloway
  • PROTECTION SYSTEM FOR AN ELECTRICAL POWER NETWORK
    Publication number: 20120200966
    Abstract: A protection system is provided for an electrical power network. The system has one or more circuit breaker arrangements which on activation isolate electrical faults within the network, and one or more fault detectors. The or each fault detector measures an inductance of a respective section of the network. The system is configured to activate one or more of the circuit breaker arrangements in response to measured inductances which are indicative of a fault.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 9, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Jason E. HILL, Steven D. A. FLETCHER, Patrick J. NORMAN, Stuart J. GALLOWAY