Patents by Inventor James Clyde Mackey

James Clyde Mackey 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).

  • Method for modifying engine loading through changing of propeller blade shape by bending a propeller blade edge to modify the section camber and pitch of the blade, and propellers made using the same
    Patent number: 6837760
    Abstract: The present invention is directed to a method of altering the pitch of a propeller through localized bending of its blades. To alter the propeller's pitch the camber of at least one of its blades is changed by bending a portion of a trailing edge, a leading edge, or both edges relative to a remainder of the blade. A bent portion can be located away from a tip of the blade at a distance that is less than or substantially equal to 60% of a radius of the blade, and bending preferably commences at a distance in from an edge of a blade of up to 50% of a section width of the blade. The maximum preferable change in pitch at any location on the radius due to bending is 30%.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: January 4, 2005
    Inventor: James Clyde Mackey
  • Method for modifying engine loading through changing of propeller blade shape by bending a propeller blade edge to modify the section camber and pitch of the blade, and propellers made using the same
    Publication number: 20030220028
    Abstract: The present invention is directed to a method of altering the pitch of a propeller through localized bending of its blades. To alter the propeller's pitch the camber of at least one of its blades is changed by bending a portion of a trailing edge, a leading edge, or both edges relative to a remainder of the blade. A bent portion can be located away from a tip of the blade at a distance that is less than or substantially equal to 60% of a radius of the blade, and bending preferably commences at a distance in from an edge of a blade of up to 50% of a section width of the blade. The maximum preferable change in pitch at any location on the radius due to bending is 30%.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 27, 2003
    Inventor: James Clyde Mackey