Patents by Inventor Donald W. Pennertz

Donald W. Pennertz 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).

  • Deburring machine
    Patent number: 4373297
    Abstract: A deburring machine comprises a frame supporting a plurality of motor driven deburring brushes. At least two of the motors are spaced apart and a workpiece carriage is supported between them and movable generally in direction along the axis of rotation of the motors. A workpiece on the carriage engages the brushes driven by the motors to deburr the ends of a workpiece held on the workpiece carriage. The motors are adjustable to accommodate different lengths of workpieces, and also the workpiece holder itself is adjustable for different workpiece sizes.
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: February 15, 1983
    Assignee: Alexandria Extrusion Company
    Inventors: Donald W. Pennertz, Ritchie J. Burkey