Patents by Inventor Elizabeth Boyd (nee Reynolds)

Elizabeth Boyd (nee Reynolds) 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).

  • Hybrid propulsion systems
    Patent number: 8062081
    Abstract: A hybrid propulsion and energy management system for use in marine vessels and other variable demand propulsion applications monitors and draws energy from various energy sources dynamically to implement multiple operating modes and provide efficient system operation across a range of propulsive demands, altering the operation and output of various energy sources in response to propulsive load demands, hotel loads and auxiliary energy demands. The propulsion system incorporates at least two propulsive sources, including at least one main propulsive engine and at least one motor-generator unit arranged to drive a common output shaft, and the energy management system dynamically shifts operation of each of the two sources to satisfy propulsive demands. The main propulsive engine and the motor-generator unit are capable of driving the common output shaft both independently and simultaneously.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: November 22, 2011
    Assignee: Foss Maritime Company, Inc.
    Inventors: John Barrett, Elizabeth Boyd (nee Reynolds), Tim Stewart, Rick McKenna, Jason Aspin, John Eldridge, Paul Jamer, John Stratton, Chris Wright
  • HYBRID PROPULSION SYSTEMS
    Publication number: 20090156068
    Abstract: A hybrid propulsion and energy management system for use in marine vessels and other variable demand propulsion applications monitors and draws energy from various energy sources dynamically to implement multiple operating modes and provide efficient system operation across a range of propulsive demands, altering the operation and output of various energy sources in response to propulsive load demands, hotel loads and auxiliary energy demands. The propulsion system incorporates at least two propulsive sources, including at least one main propulsive engine and at least one motor-generator unit arranged to drive a common output shaft, and the energy management system dynamically shifts operation of each of the two sources to satisfy propulsive demands. The main propulsive engine and the motor-generator unit are capable of driving the common output shaft both independently and simultaneously.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 18, 2009
    Applicants: FOSS MARITIME COMPANY, ASPIN KEMP & ASSOCIATES, XEROPOINT ENERGY
    Inventors: John BARRETT, Elizabeth BOYD (nee Reynolds), Tim STEWART, Rick McKENNA, Jason ASPIN, John ELDRIDGE, Paul JAMER, John STRATTON, Chris WRIGHT