Patents by Inventor Dieter K. Naggert

Dieter K. Naggert 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).

  • Patent number: 6047587
    Abstract: An apparatus for a cooled toolpack cradle for the extrusion of aluminum cans. The apparatus comprises a toolpack having more than one tool. The apparatus further comprises a means for delivering aluminum cans into the toolpack. The apparatus further comprises a hardened steel block that is attached to the toolpack and to the base of the toolpack cradle to absorb extrusion forces on the toolpack during the extrusion of aluminum cans. The apparatus further comprises two independently adjustable wedges which by reciprocating means raise or lower the toolpack either uniformly or one end independent of the other. The apparatus further comprises means to preload the adjustment wedges to eliminate backlash. The apparatus further comprises a pad in the toolpack cover to provide the required downward clamping force with coolant passages that connect directly with coolant distribution rings with no intermediate hose connection.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: April 11, 2000
    Assignee: Gerhard Designing & Manufacturing, Inc.
    Inventor: Dieter K. Naggert
  • 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