Patents by Inventor Robert F. Massmann

Robert F. Massmann 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).

  • Transport system for workpieces
    Patent number: 5669751
    Abstract: A machine guard has an opening with a detachable door; i.e., sliding tracks and hinges are not used for door support. When an outside loader arm and its part grippers move to the door, the door is unlatched from the guard and attached to the arm. The arm and grippers then move through the opening, taking the door away from the opening.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: September 23, 1997
    Assignee: Cincinnati Milacron Inc.
    Inventors: James R. Hoffman, Robert F. Massmann