Patents by Inventor Wilhelm Fetzer

Wilhelm Fetzer 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: 6149085
    Abstract: The present invention relates to a housing provided for a rolling mill. The housing includes two sidewalls and at least two horizontal beams for receiving a roll unit. This construction is characterized in having at least one further additional beam arranged in a vertical spacing to the beams, whereby the beams pass through the side walls or are fastened partly outside thereof.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: November 21, 2000
    Assignee: Buhler AG
    Inventors: Wilhelm Fetzer, Urs V. Keller
  • Patent number: 5386946
    Abstract: A roll mill, particularly a flaking mill with a product channel on each of the axial ends of the rollers utilizes at least two rollers having guide channels with adjoining guide surfaces, at their axial ends, with the guide channels and guide surfaces, conveying the product to be milled into the converging gap or nip of the rollers. The guide surfaces are pivotable via a piston-cylinder unit from an operating position into a discharge position where in the latter position, foreign objects which have accumulated on the guide surface are removed via an open flap, below the guide surface, into a container.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: February 7, 1995
    Assignee: Buhler AG
    Inventor: Wilhelm Fetzer
  • Patent number: 5246176
    Abstract: Cleaning means having at least one blast pipe (8) which ensure uniform falling conditions inside return conduits (6) are arranged on a squeezing roll mill (1, 2) having lateral return conduits (6).
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: September 21, 1993
    Assignee: Buhler AG
    Inventors: Wilhelm Fetzer, Bruno Burkhard
  • Patent number: 4905917
    Abstract: A roll mill, particularly a flaking mill, for milling particulate material comprises at least two rollers, especially a stationary roller and a movable one, pressed against each other by means of a pressure exerting device. Product is supplied in a width greater than the axial width of the rollers and their nip. Channels are arranged on both lateral ends of the rollers and collect the material fed in excess of the axial length of the rollers, said channels being preferably open towards the rollers, especially over their whole length. Each of said channels discharges onto a guide surface situated above the nip of the rollers and discharges in turn all the material from the channels into the nip above the upper gripping zone of the nip.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: March 6, 1990
    Assignee: Gebrueder Buehler AG
    Inventors: Wilhelm Fetzer, Edgar Ruegger
  • Patent number: D411550
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: June 29, 1999
    Assignee: Buhler, A.G.
    Inventors: Wilhelm Fetzer, Urs V. Keller
  • Patent number: D415176
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: October 12, 1999
    Assignee: Buhler, A.G.
    Inventors: Wilhelm Fetzer, Urs V. Keller