Patents by Inventor Siegfried Gebhardt

Siegfried Gebhardt 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 the production or manufacture of stones or blocks
    Patent number: 5281125
    Abstract: On a device for the production or manufacture of stones, particularly of paving stones, block or formwork stones, with a material box, a mould box or flask, a shake device with compaction rams or presses, to a main frame main cylinders are fastened, to whose main pistons operating in vertical direction the mould box or flask is fastened via a supporting frame. The material box is arranged on the main frame above the mould box or flask. The compaction rams or presses are arranged under the mould box or flask. Draw or traction cylinders are arranged on the main frame via interlocking elements. These cylinders are connectable to the compaction rams or presses. The mould box or flask with the compaction rams or presses and a ram or press support are connected, rotatable by at least approximately 180.degree. via the supporting frame, to the main frame and the main cylinders.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: January 25, 1994
    Inventor: Siegfried Gebhardt