Patents by Inventor Craig M. Barnhart

Craig M. Barnhart 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).

  • Patent number: 9279631
    Abstract: A device and related method are disclosed for efficient loading of a spring powered magazine. The magazine body is configured with equal and opposite lateral channels extending from the magazine floor to near the magazine top. The channels are located approximately at a longitudinal midpoint of the magazine body. The follower of the magazine is configured with a follower sleeve having a longitudinal dimension approximately equal to the longitudinal dimension of the opposite lateral channels and aligned with the opposite lateral channels as the follower slidably travels along a vertical axis of the magazine body. As the follower sleeve aligns with the opposite lateral channels, it is configured to be engaged by a compression tool to relieve, as the compression tool acts upon the follower, spring tension between the latest round loaded and the retainer lips of the magazine opening.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: March 8, 2016
    Inventor: Craig M. Barnhart
  • Publication number: 20140373416
    Abstract: A device and related method are disclosed for efficient loading of a spring powered magazine. The magazine body is configured with equal and opposite lateral channels extending from the magazine floor to near the magazine top. The channels are located approximately at a longitudinal midpoint of the magazine body. The follower of the magazine is configured with a follower sleeve having a longitudinal dimension approximately equal to the longitudinal dimension of the opposite lateral channels and aligned with the opposite lateral channels as the follower slidably travels along a vertical axis of the magazine body. As the follower sleeve aligns with the opposite lateral channels, it is configured to be engaged by a compression tool to relieve, as the compression tool acts upon the follower, spring tension between the latest round loaded and the retainer lips of the magazine opening.
    Type: Application
    Filed: November 25, 2013
    Publication date: December 25, 2014
    Inventor: Craig M. Barnhart