Patents by Inventor James A. MacDonald

James A. MacDonald 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).

  • Projectile with interiorly weighted flow passage insert
    Patent number: 5123645
    Abstract: A football-like projectile having a central longitudinal bore includes a weighted insert in the bore to concentrate the weight of the projectile interiorly of the ball about the longitudinal axis. The insert is provided with a longitudinal flow passage to permit air flow hrough the insert and the bore when the ball is in flight.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: June 23, 1992
    Inventors: Richard A. MacDonald, James A. MacDonald
  • Game ball
    Patent number: 5000451
    Abstract: A football or other projectile is stabilized in flight by weighted material that responds to spinning of the football about its major axis by moving radially outward to become evenly distributed about that axis. In a preferred embodiment, two annular tubes, concentrically disposed about the major axis, encircle the ball at opposite sides of a plane containing the minor axis of the ball. The weighted material, in the form of beads, liquid, etc., is contained within the tubes and is flung radially outward as the ball spins.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: March 19, 1991
    Inventors: Richard A. MacDonald, James A. MacDonald
  • Game ball
    Patent number: 4003574
    Abstract: A football-like game ball which is manually thrown through the air. The ball has a generally truncated ellipsoid outer contour with a Venturi-like nozzle passage extending coincident with a major axis of the ball. A plurality of weighted elements are located within or adjacent to an outer wall of the ball to provide rotational stability when the ball is thrown through the air and spun about the major axis.
    Type: Grant
    Filed: March 4, 1075
    Date of Patent: January 18, 1977
    Assignee: Thingamajig Corporation
    Inventors: Richard A. MacDonald, James A. MacDonald, Joseph J. Andrews
  • Armored vehicle or toy replica
    Patent number: D548646
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: August 14, 2007
    Assignee: Force Protection Industries, Inc.
    Inventors: Paul C. Green, Jr., James A. MacDonald, Randy L. Baxley, Timothy L. Smith