Patents by Inventor Wolfgang Pietsch

Wolfgang Pietsch 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: 4274247
    Abstract: A hay-type crop harvester has a chassis supported on the ground on wheels and normally displaceable along the ground in a predetermined travel direction. A crop cutter is mounted ahead of the wheels on the chassis and extends transversely substantially the full width of the chassis so as to cut a swath of crop and pass it backward. A central crop conditioner is provided on the chassis between the wheels thereof and two outer crop conditioners are each provided on a respective side of the chassis to respective sides of the wheels. An auger provided with oppositely directed screwthread formations at each of the conditioners transports the crop laterally so that after being cut in a single wide swath it is subdivided into three portions each of which is fed to a respective conditioner. Thereafter the portions may be laid down in windrows between and outside the wheels of the harvester.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: June 23, 1981
    Assignee: Veb Kombinat Fortschritt, Landmaschinen
    Inventors: Gerhard Schmidt, Christian Noack, Klaus Ulrich, Volker Hanel, Bernd Kretschmar, Hans-Jochen Kloth, Wolfgang Pietsch, Peter Hesche, Theodor Eistert, Klaus Oliva, Manfred Kreidler
  • Patent number: 3948638
    Abstract: A material treating system wherein the material is fed into a reduction furnace or reactor or similar structure whereby portions of the material issue from the furnace in the form of dusts carrying one or more surface reaction products such as oxides, hydroxides, carbonates and carbon containing products. The dust is mixed with from 10 to 40 percent by weight of the material in the form of dust which is untreated and which is, therefore, substantially free of the reaction products. A briquetting press or other agglomerating means is employed for forming the mixture into agglomerated pieces which are then fed as granules, with or without comminuting, into the reactor as part of the reactor charge.
    Type: Grant
    Filed: March 22, 1974
    Date of Patent: April 6, 1976
    Assignee: Hutt GmbH
    Inventor: Wolfgang Pietsch