Patents by Inventor George Williamson Laird

George Williamson Laird 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).

  • AC power generating system
    Patent number: 6801019
    Abstract: An electric power generating set which automatically varies its speed to match load variations at any time includes an engine driven generator G which provides a positive, Ga and a negative, Gb AC output voltage each of which is rectified by a respective rectifier Re3a, Re3b. Each rectifier Re3a,Re3b has one terminal connected to a common neutral line N. The DC output voltage of each rectifier Re3a, Re3b is boosted in a respective booster circuit which also has one terminal connected to the neutral line N. The combined output of the two booster circuits, Va+Vb is fed to an Inverter IN which converts it to the AC power output of the generating set. A DC load current between the booster circuits and the inverter IN is monitored and used to provide a speed demand feedback signal Srs to the speed control of the engine EN.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: October 5, 2004
    Assignee: Newage International Limited
    Inventors: Lawrence Haydock, Wlodzimierz Koczara, Nazar Al-Khayat, Neil Brown, Denis Hedley Dalby, Jawad Al-Tayie, Robert Pawel Dziuba, Jaroslaw Leonarski, George Williamson Laird
  • Ac power generating system
    Publication number: 20030107349
    Abstract: An electric power generating set which automatically varies its speed to match load variations at any time includes an engine driven generator G which provides a positive, Ga and a negative, Gb AC output voltage each of which is rectified by a respective rectifier Re3a, Re3b. Each rectifier Re3a,Re3b has one terminal connected to a common neutral line N. The DC output voltage of each rectifier Re3a, Re3b is boosted in a respective booster circuit which also has one terminal connected to the neutral line N. The combined output of the two booster circuits, Va+Vb is fed to an Inverter IN which converts it to the AC power output of the generating set. A DC load current between the booster circuits and the inverter IN is monitored and used to provide a speed demand feedback signal Srs to the speed control of the engine EN.
    Type: Application
    Filed: December 31, 2002
    Publication date: June 12, 2003
    Inventors: Lawrence Haydock, Wlodzimierz Koczara, Nazar Al-Khayat, Neil Brown, Denis Hedley Dalby, Jawad Al-Tayie, Robert Pawel Dziuba, Jaroslaw Leonarski, George Williamson Laird