Patents by Inventor Marvin P. Calhoun

Marvin P. Calhoun 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: 7559880
    Abstract: The martial arts accessory apparatus provides a sturdy backdrop for target attachments. The slideably fitted inserts fit in a plurality of positions within the sleeves. Additionally, the cross brace provides slideable fit of the target structure verticals, thereby providing target height adjustment. The first target structure provides for holding objects to be struck, such as boards or bricks, in a choice of pivoted positions, the first target structure fittable to the horizontal in a plurality of rotated positions, thereby providing for a user to ideally position the object to be struck. The first target structure provides a significant gap between arms so that impact follow through may be practiced without injury to the user. The variety of target structures and positioning capabilities allow a user to optimally locate each target or object to be struck so that a variety of striking positions and striking body parts can be used.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: July 14, 2009
    Inventor: Marvin P. Calhoun