Patents by Inventor David Francis Coulson

David Francis Coulson 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).

  • Drive apparatus for electricity generating apparatus
    Patent number: 9624903
    Abstract: A drive apparatus for an electrical generator (2) is disclosed. The apparatus includes arms (6) adapted to support blades (14) in a flow of fluid. A central shaft (4) pivotably supports each of the arms about a respective horizontal axis such that flowing fluid engages the blades to cause rotation of the shaft about its longitudinal axis to actuate an electrical generator (28). A flap (16) adjusts orientation of the arms about the respective horizontal axes in dependence on direction of fluid flow.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: April 18, 2017
    Assignee: Innova Limited
    Inventor: David Francis Coulson
  • Drive Apparatus for Electricity Generating Apparatus
    Publication number: 20130189101
    Abstract: A drive apparatus for an electrical generator (2) is disclosed. The apparatus comprises arms (6) adapted to support blades (14) in a flow of fluid. A central shaft (4) pivotably supports each of the arms about a respective horizontal axis such that flowing fluid engages the blades to cause rotation of the shaft about its longitudinal axis to actuate an electrical generator (28). A flap (16) adjusts orientation of the arms about the respective horizontal axes in dependence on direction of fluid flow.
    Type: Application
    Filed: September 14, 2011
    Publication date: July 25, 2013
    Applicant: INNOVA LIMITED
    Inventor: David Francis Coulson
  • APPARATUS FOR CONVERTING WAVE MOTION INTO MECHANICAL ENERGY
    Publication number: 20100007147
    Abstract: An apparatus (2) is disclosed for generating relative motion between the apparatus and the surface of the sea on which the apparatus floats. The apparatus comprises a body (6) adapted to float on the water surface and which defines an annular chamber (28) above the water surface and in communication with said water surface, wherein the chamber is able to expand or contract as the height of the water surface varies as a result of wave motion, to enable movement of the body relative to the water surface.
    Type: Application
    Filed: June 25, 2007
    Publication date: January 14, 2010
    Inventor: David Francis Coulson