Patents by Inventor Francis Russell Watson

Francis Russell Watson 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).

  • Linear actuator
    Patent number: 8418574
    Abstract: A combined linear and rotary actuator has a shaft with a screw thread, a nut engaging the screw thread and engaging means movable between a first location where rotation of the turning mechanism produces substantially linear displacement of the shaft, and a second location where rotation of the turning mechanism produces substantially rotary displacement of the shaft. The linear actuator finds particular use on retractable marine propulsor such as used on submarines and the like.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: April 16, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Timothy Mark Stephen Myers, Francis Russell Watson
  • LINEAR ACTUATOR
    Publication number: 20080190227
    Abstract: A combined linear and rotary actuator has a shaft with a screw thread, a nut engaging the screw thread and engaging means movable between a first location where rotation of the turning mechanism produces substantially linear displacement of the shaft, and a second location where rotation of the turning mechanism produces substantially rotary displacement of the shaft. The linear actuator finds particular use on retractable marine propulsor such as used on submarines and the like.
    Type: Application
    Filed: January 18, 2008
    Publication date: August 14, 2008
    Applicant: ROLLS-ROYCE PLC
    Inventors: Timothy Mark Stephen Myers, Francis Russell Watson