Patents by Inventor Harvey R. Kahn

Harvey R. Kahn 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).

  • Firearm with interchangeable barrels and ammunition cylinders
    Patent number: 4297801
    Abstract: A firearm having interchangeable barrels and ammunition cylinders for changing the caliber of ammunition used therewith includes a plurality of ammunition cylinders and a plurality of barrels, each barrel being threadedly mountable on the firearm frame with each barrel including a longitudinal barrel extension for interfering with the mounting and revolution of the ammunition cylinders for ammunition having a larger caliber than that of the respective barrel, and the improvement therein includes alignment marks on the barrels and frame for alignment under the full threaded engagement of each barrel in the frame, a plurality of sight ribs with each sight rib corresponding to a different barrel, means for attaching each sight rib to its corresponding barrel at a predetermined location to enable each sight rib to its corresponding barrel at a predetermined location to enable each sight rib to be operatively oriented with the rear sight for aiming the firearm when each barrel is fully threadedly engaged in the fr
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: November 3, 1981
    Assignee: Alan I. Gerald Corporation
    Inventor: Harvey R. Kahn
  • Firearm with interchangeable barrels and ammunition cylinders
    Patent number: 4288938
    Abstract: A firearm having interchangeable barrels and ammunition cylinders for changing the caliber of ammunition used therewith includes a plurality of ammunition cylinders and a plurality of barrels, each barrel being threadedly mountable on the firearm frame width each barrel including a longitudinal barrel extension for interfering with the mounting and revolution of the ammunition cylinders for ammunition having a larger caliber than that of the respective barrel, and the improvement therein includes alignment marks on the barrels and frame for alignment under the full threaded engagement of each barrel in the frame and forward sights on each of the barrels for cooperation with a rear sight on the frame to allow aiming of the firearm when the barrel is fully engaged in the frame thereby insuring that the weapon will only be used when a barrel is fully threadedly engaged in the frame and therefore that the longitudinal extension thereof will be operative to interfere with any ammunition cylinders intended for larg
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: September 15, 1981
    Assignee: Alan I. Gerald Corporation
    Inventor: Harvey R. Kahn