Patents by Inventor William Raymond Evans

William Raymond Evans 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).

  • Hydraulic energy storage systems
    Patent number: 7107767
    Abstract: A hydraulic energy storage system for vehicles to provide higher efficiency, smaller package size, lower weight, unitary construction, durability and enhanced reliability while maintaining the capability to efficiently store and restore energy at high power levels.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: September 19, 2006
    Assignee: Shep Limited
    Inventors: Hugh Ivo Frazer, William Raymond Evans, Peter Russell Mattin
  • Hydraulic energy storage systems
    Publication number: 20040103656
    Abstract: A hydraulic energy storage system for vehicles to provide higher efficiency, smaller package size, lower weight, unitary construction, durability and enhanced reliability while maintaining the capability to efficiently store and restore energy at high power levels.
    Type: Application
    Filed: January 7, 2004
    Publication date: June 3, 2004
    Inventors: Hugh Ivo Frazer, William Raymond Evans, Peter Russell Martin