Patents by Inventor Johann Evers

Johann Evers 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).

  • Device for working the ground
    Patent number: 5458203
    Abstract: A device for working the ground comprising a frame and a plurality of discs is disclosed. Each disc is rotatably mounted on a shaft which is provided on one end of a pivotable standing shaft. In order to prevent jamming of the discs by earth thrown up by adjacent discs, each standing shaft is placed on the concave side of its associated disc. The shafts are inclined relative to the ground with this inclination being adjustable. The spacing between adjacent discs is adjustable as is the orientation of the discs.
    Type: Grant
    Filed: May 25, 1993
    Date of Patent: October 17, 1995
    Assignee: Evers Research B.V.
    Inventor: Johann Evers
  • Device for working the ground
    Patent number: 5259460
    Abstract: A device for working the ground comprising a frame and a plurality of discs. Each disc is rotatably mounted on a shaft which is provided on the free end of a pivotable standing shaft. In order to prevent jamming of the discs by earth thrown up by adjacent discs, each standing shaft is placed on the concave side of its associated disc. The shafts are inclined relative to the ground, thus providing an improved working of the ground. The spacing between adjacent discs is adjustable as is the orientation of the discs.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: November 9, 1993
    Assignee: Evers Research B.V.
    Inventor: Johann Evers