Patents by Inventor William J. Major

William J. Major 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).

  • Counterweight system
    Patent number: 7540689
    Abstract: A counterweight system for maintain stability of a tractor and the ability to compress a support surface when desired includes a tractor. A frame is selectively hitched to the tractor. A counterweight is coupled to the frame. The counterweight has a weight to balance weight positioned at the front of the tractor. A plurality of hitch balls is coupled to the frame. A trailer receives one of the hitch balls to allow the trailer to be coupled to the frame and to be towed to a different location.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: June 2, 2009
    Inventor: William J. Major, Sr.
  • Automatic firearm
    Patent number: 5038666
    Abstract: An automatic firearm of especially simple construction and easy maintainability, having an adjustable cyclic firing rate. The firearm has a receiver with an upper and lower portion. The upper portion defines a cavity in which a bolt assembly reciprocates. The reciprocation is maintained by a single compression spring in the cavity, and the length of the cavity, and compression of the spring, are adjustable to vary the cyclic firing rate. The firearm includes an especially simple trigger group arrangement. The lower receiver portion is structured to protect the trigger group. Also disclosed is an especially simple, yet practical ejector mechanism.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: August 13, 1991
    Assignee: Barbara Major
    Inventor: William J. Major
  • Automatic firearm
    Patent number: 4972617
    Abstract: An automatic firearm of especially simple construction and easy maintainability, having an adjustable cyclic firing rate. The firearm has a receiver with an upper and lower portion. The upper portion defines a cavity in which a bolt assembly reciprocates. The reciprocation is maintained by a single compression spring in the cavity, and the length of the cavity, and compression of the spring, are adjustable to vary the cyclic firing rate. The firearm includes an especially simple trigger group arrangement. The lower receiver portion is structured to protect the trigger group. Also disclosed is an especially simple, yet practical ejector mechanism.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: November 27, 1990
    Assignee: Barbara Major
    Inventor: William J. Major
  • Automatic firearm
    Patent number: 4889032
    Abstract: An automatic firearm of especially simple construction and easy maintainability, having an adjustable cyclic firing rate. The firearm has a receiver with an upper and lower portion. The upper portion defines a cavity in which a bolt assembly reciprocates. The reciprocation is maintained by a single compression spring in the cavity, and the length of the cavity, and compression of the spring, are adjustable to vary the cyclic firing rate. The firearm includes an especially simple trigger group arrangement. The lower receiver portion is structured to protect the trigger group. Also disclosed is an especially simple, yet practical ejector mechanism.
    Type: Grant
    Filed: November 1, 1988
    Date of Patent: December 26, 1989
    Assignee: Barbara Major
    Inventor: William J. Major