Patents by Inventor David C. C. Mao

David C. C. Mao 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).

  • Blank firing adapter for combination gas and recoil operated weapon
    Patent number: 7380488
    Abstract: A firing adapter for a combination gas and recoil operated weapon includes a blank firing barrel attached to the weapon; a piston having a barrel end and an anchor end, the barrel end being reciprocably disposed in the blank firing barrel and the anchor end being fixed to a non-recoil surface; and a gas port formed in the blank firing barrel wherein in a rest position of the weapon, the barrel end of the piston closes the gas port, and in a recoil position of the weapon, the barrel end of the piston opens the gas port.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: June 3, 2008
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: David C. C. Mao, Frank Dindl