Patents by Inventor Andrew Douglas Grant

Andrew Douglas Grant 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).

  • Turbine with coaxial sets of blades
    Patent number: 8070444
    Abstract: A turbine (5) having at least two sets of co-axially mounted, rotatable blades (10, 15) arranged so that one set cannot eclipse another. Preferably, the sets of blades (10, 15) are contra-rotatable. Each set of blades (10, 15) may be operable to extract similar amounts of energy, thereby to minimise the net reactive torque.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: December 6, 2011
    Assignee: University of Strathclyde
    Inventors: Joe Clarke, Cameron Johnstone, Gary Connor, Andrew Douglas Grant
  • Turbine with Coaxial Sets of Blades
    Publication number: 20080226450
    Abstract: A turbine (5) having at least two sets of co-axially mounted, rotatable blades (10, 15) arranged so that one set cannot eclipse another. Preferably, the sets of blades (10, 15) are contra-rotatable. Each set of blades (10, 15) may be operable to extract similar amounts of energy, thereby to minimise the net reactive torque.
    Type: Application
    Filed: August 1, 2006
    Publication date: September 18, 2008
    Inventors: Joe Clarke, Cameron Johnstone, Gary Connor, Andrew Douglas Grant