Patents by Inventor Robert J. Gruodis

Robert J. Gruodis 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).

  • Methods and apparatus for redrawing thin-walled container bodies
    Patent number: 5315858
    Abstract: Methods and apparatus for redrawing a drawn cup are disclosed. In particular, the methods and apparatus disclosed are directed to redrawing a container body for use in a two piece beverage container. The redraw operation uses a redraw sleeve and a redraw ring that prevent wrinkles when a thin gauge metal is employed. The wrinkles are prevented by providing cooperating displacements on the surfaces of the redraw ring and the redraw sleeve that clamp the bottom surface of the cup that is being redrawn. This displacement provides a convoluted path through which the metal is pulled during the redraw operation to increase the resistance to being drawn and the tension in the side wall, thereby substantially eliminating wrinkles.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: May 31, 1994
    Assignee: Crown Cork & Seal Company, Inc.
    Inventors: Dieter K. Naggert, James J. Tang, Robert J. Gruodis
  • Can
    Patent number: D267393
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: December 28, 1982
    Assignee: The Continental Group, Inc.
    Inventors: Robert J. Gruodis, William T. Franz, Edward J. Hayes
  • Container for liquids or the like
    Patent number: D269593
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: July 5, 1983
    Assignee: The Continental Group, Inc.
    Inventors: Robert J. Gruodis, William T. Franz, Edward J. Hayes
  • Can
    Patent number: D272418
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: January 31, 1984
    Assignee: The Continental Group, Inc.
    Inventors: Robert J. Gruodis, William T. Franz, Edward J. Hayes
  • Fluted container wall
    Patent number: D355129
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: February 7, 1995
    Assignee: Crown Cork & Seal Company
    Inventor: Robert J. Gruodis
  • Fluted container wall
    Patent number: D355368
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: February 14, 1995
    Assignee: Crown Cork & Seal Company
    Inventor: Robert J. Gruodis