Patents by Inventor Robert B. Crowell

Robert B. Crowell 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).

  • Automatic gun having gas leakage control mechanism
    Patent number: 4178832
    Abstract: This invention relates to automatic guns having bolt carriers operated by coil movement of the gun barrel. High pressure gas is bled from the barrel into a gas tube that delivers both mechanical and fluid pressure forces to a piston impactor aligned with the bolt carrier. Special floating rings are arranged on the gas tube to provide controlled escape of high pressure gas from the tube. The floating rings are shiftable radially to compensate for manufacturing tolerance build-ups in the gun components. The invention reduces manufacturing costs and also increases field service capabilities.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: December 18, 1979
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Robert B. Crowell