Patents by Inventor Mark D. Witherell

Mark D. Witherell 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).

  • Superalloy mortar tube
    Patent number: 7963202
    Abstract: A finless mortar tube made of a superalloy includes, seriatim, a breech end, a beginning taper point, an ending taper point, a lower clamp region, an upper clamp region, and a muzzle end. The nominal wall thickness of the tube is constant from forward of the breech end to the beginning taper point and the nominal wall thickness of the tube decreases from the beginning taper point to the ending taper point. The mortar tube is capable of a substantial increase in the rate of fire compared to conventional mortar tubes.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: June 21, 2011
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Richard F. Becker, Mark D. Witherell, Jose Santiago, George E. Hathaway, IV, Ramon Espinosa, Steve Tauscher