Patents by Inventor Johann Doppstadt

Johann Doppstadt 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: 7980502
    Abstract: The invention refers to a cutting tool for comminution devices, comprising a knife (2) or knife edge which can be fastened to a comminution cylinder or a toothed body (1). The invention is characterized in that the knife (2) can be arranged non-positive and positive interlocking at the comminution cylinder or the toothed body (1).
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: July 19, 2011
    Assignee: Doppstadt Calbe GmbH
    Inventors: Johann Doppstadt, Horst Berger
  • Patent number: 7959098
    Abstract: A beater for comminution devices with a rotor on or at which the beater can be fastened, including a lower body which is designed as a shaft end for connecting the beater with the rotor, and at least one cutting body. At least one cutting body is connected with the lower body in a releasable/fixed manner.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: June 14, 2011
    Assignee: Doppstadt Calbe GmbH
    Inventors: Johann Doppstadt, Horst Berger
  • Patent number: 7938350
    Abstract: The invention refers to a knife holder for comminution devices, comprising a tooth body (1) which can be fastened on a comminution cylinder or the like, and at least one knife (2), the knife (2) being able to be arranged positive-locking on the tooth body (1). The invention is characterized by the fact that a knife receiving device is provided, the knife receiving device (3) is designed as recess (4), and, seen from the side, has the shape of a J, and the recess (4) is designed wedge-like or conically, preferably tapering-off to the outside in such a way that recess surfaces (4/1, 4/2) occur.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: May 10, 2011
    Assignee: Doppstadt Calbe GmbH
    Inventors: Johann Doppstadt, Horst Berger
  • Patent number: 7909277
    Abstract: A comminution device including at least one comminution cylinder supported rotating in a machine frame with at least one comminution tool arranged on it, and at least one counter cutter interacting with the comminution tool, and at least one sieve device for the comminuted material the housing of which encircles the comminution cylinder at least partly, the sieve device and the counter cutter forming a common structural component. The counter cutter is designed like a plate and has recesses designed corresponding to the shape of the comminution tools of the comminution device.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: March 22, 2011
    Assignee: Doppstadt Calbe GmbH
    Inventors: Johann Doppstadt, Horst Berger
  • Patent number: 7832667
    Abstract: A shredding device, consisting of at least one shredding roll that is rotatably mounted in a machine frame, at least one shredding instrument that is mounted on the roll, at least one opposing blade that co-operates with the shredding instrument(s) and at least one screen for the shredded product. The housing of the screen at least partially surrounding the shredding roll. The screen can be displaced in relation to the machine frame and/or the shredding roll.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: November 16, 2010
    Assignee: Doppstadt Calbe GmbH
    Inventors: Johann Doppstadt, Horst Berger
  • Publication number: 20090145812
    Abstract: The invention relates to a screening device consisting of an elongated comb comprising several flexible combs arranged in parallel. The invention is characterised in that the combs are provided with angular or rounded sections, which form a grid that defines the particle size of the screened material. The invention also relates to a roller crusher comprising a screening device of the aforementioned type.
    Type: Application
    Filed: June 7, 2006
    Publication date: June 11, 2009
    Inventors: Johann Doppstadt, Horst Berger
  • Publication number: 20090140091
    Abstract: The invention refers to a cutting tool for comminution devices, comprising a knife (2) or knife edge which can be fastened to a comminution cylinder or a toothed body (1). The invention is characterised in that the knife (2) can be arranged non-positive and positive interlocking at the comminution cylinder or the toothed body (1).
    Type: Application
    Filed: October 23, 2006
    Publication date: June 4, 2009
    Inventors: Johann Doppstadt, Horst Berger
  • Publication number: 20090121058
    Abstract: The invention refers to a comminution device comprising at least one comminution cylinder supported rotating in a machine frame with at least one comminution tool arranged on it, and at least one counter cutter interacting with the comminution tool, and at least one sieve device for the comminuted material the housing of which encircles the comminution cylinder at least partly, the sieve device and the counter cutter forming a common structural component. The invention is characterized in that the counter cutter is designed like a plate and has recesses designed corresponding to the shape of the comminution tools of the comminution device.
    Type: Application
    Filed: April 25, 2007
    Publication date: May 14, 2009
    Inventors: Johann Doppstadt, Berger Horst
  • Publication number: 20090114751
    Abstract: The invention refers to a beater for comminution devices with a rotor on or at which the beetle can be fastened, comprising a lower body which is designed like a shaft end for connecting the beater with the rotor, and at least one cutting body. The invention is characterised in that at least one cutting body is connected with the lower body releasable/fixed.
    Type: Application
    Filed: April 27, 2007
    Publication date: May 7, 2009
    Inventors: Johann Doppstadt, Horst Berger
  • Publication number: 20090065619
    Abstract: The invention relates to a shredding device, consisting of at least one shredding roll that is rotatably mounted in a machine frame, at least one shredding instrument that is mounted on said roll, at least one opposing blade that co-operates with the shredding instrument(s) and at least one screen for the shredded product, the housing of said screen at least partially surrounding the shredding roll. The invention is characterised in that the screen can be displaced in relation to the machine frame and/or the shredding roll.
    Type: Application
    Filed: May 18, 2006
    Publication date: March 12, 2009
    Inventors: Johann Doppstadt, Berger Horst
  • Publication number: 20070194161
    Abstract: The invention refers to a knife holder for comminution devices, comprising a tooth body (1) which can be fastened on a comminution cylinder or the like, and at least one knife (2), the knife (2) being able to be arranged positive-locking on the tooth body (1). The invention is characterised by the fact that a knife receiving device is provided, the knife receiving device (3) is designed as recess (4), and, seen from the side, has the shape of a J, and the recess (4) is designed wedge-like or conically, preferably tapering-off to the outside in such a way that recess surfaces (4/1, 4/2) occur.
    Type: Application
    Filed: September 16, 2005
    Publication date: August 23, 2007
    Applicant: DOPPSTADT CALBE GMBH
    Inventors: Johann Doppstadt, Horst Berger
  • Publication number: 20060163120
    Abstract: The invention refers to a trommel screen machine, comprising at least one revolving screening drum (2), at least one drive (3) for the screening drum, a feeding hopper (4) as well as at least one collecting device, respectively transport device (6), for collecting, respectively transporting the screened good. The invention is characterised by the fact that in front of and/or on the trommel screen machine (1) at least one disc screen (5) is arranged which screens a defined grain, in particular oversized particles.
    Type: Application
    Filed: June 24, 2004
    Publication date: July 27, 2006
    Inventors: Johann Doppstadt, Horst Berger