Patents by Inventor Bernd Päper

Bernd Päper 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).

  • Arrangement of seats for knives on a cutting shaft in a shredding machine
    Patent number: 6533200
    Abstract: The invention concerns a knife seat arrangement on a cutting shaft of a shredding machine, having a knife seat groove and cutting tool arranged therein, whereby the cutting tool, fastened so as to be detachable in the knife seat groove, adjoins a flat back surface on a flat front surface of a stop element and the stop element adjoins a corresponding end surface of the knife seat groove with a semicylindrical rear wall, whereby the stop element has a protrusion, situated in a form-locking manner in a corresponding recess of the groove bottom and directed inward, in the area of the groove bottom of the knife seat groove, said protrusion partially gripping under the cutting tool and adjoining it, so that the stop element is supported radially in the groove by the cutting tool.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: March 18, 2003
    Inventor: Bernd Päper
  • Cutting shaft with cutting tools for a shredding/crushing machine
    Patent number: 6322012
    Abstract: The invention concerns a cutting shaft for a cutting machine having knife seat grooves distributed so as to be spirally wound on the periphery in the cutting shaft, whereby cutting tools are arranged in the knife seat groove which protrude with a cutting edge beyond the periphery of the cutting shaft and mesh with corresponding counter cutting means of the cutting machine, whereby, to change the cutting contour, cutting tools having at least the same cutting edge length and the same maximum protrusion beyond the cutting shaft, but slighter engagement depth, are arranged with counter cutting means in the shaft.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: November 27, 2001
    Inventor: Bernd Päper
  • Arrangement of seats for knives on a cutting shaft in a shredding machine
    Publication number: 20010038049
    Abstract: The invention concerns a knife seat arrangement on a cutting shaft of a shredding machine, having a knife seat groove and cutting tool arranged therein, whereby the cutting tool, fastened so as to be detachable in the knife seat groove, adjoins a flat back surface on a flat front surface of a stop element and the stop element adjoins a corresponding end surface of the knife seat groove with a semicylindrical rear wall, whereby the stop element has a protrusion, situated in a form-locking manner in a corresponding recess of the groove bottom and directed inward, in the area of the groove bottom of the knife seat groove, said protrusion partially gripping under the cutting tool and adjoining it, so that the stop element is supported radially in the groove by the cutting tool.
    Type: Application
    Filed: March 15, 2001
    Publication date: November 8, 2001
    Inventor: Bernd Paper