Patents by Inventor Robert G. Clawson

Robert G. Clawson 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).

  • Container wall with rupturable weakening line
    Patent number: 4105133
    Abstract: A sheet metal container wall or end closure is provided which includes a weakening line in the sheet metal and a rib formed across the weakening line to facilitate rupture of the residual metal in the weakening line. Such container wall may also have a hollow button formed in it with the weakening line and rib formed in the button whereby flexing of the button stresses the rib and weakening line to initiate rupture of the residual metal in the weakening line.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: August 8, 1978
    Assignee: Aluminum Company of America
    Inventors: Robert L. La Barge, Robert G. Clawson