Patents by Inventor Ernst Bottger

Ernst Bottger 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: 4456182
    Abstract: The invention concerns a pulp grinder in which feed devices force the wood against the grinder stone and in which there is an elevated level of water in the grinding zone. Sealing devices or plates extend between the walls of the wood-supply chutes or pusher chambers and the grinder stone to keep the water level high only in the grinding zone. The sealing plates are adjustable for controlling the liquid level in the grinding zone.
    Type: Grant
    Filed: December 4, 1981
    Date of Patent: June 26, 1984
    Assignee: J. M. Voith GmbH
    Inventors: Richard Suttinger, Ernst Bottger, Hans O. Henrich, Theodor Bahr, Helmut Thumm
  • Patent number: 4351486
    Abstract: The disclosure concerns a process for grinding wood on a grinding stone and the grinding stone which grinds the wood. The grinding stone has a central core, which may be comprised of concrete or steel. The core has a free inner space. A water supply line extends along the free inner space. Outlets from the water supply line are directed toward the periphery of the core at the grinding zone of the grinding layer. Around the core is a grinding layer for grinding the wood. The grinding layer is permeable so that water can be transmitted through it. The permeability may arise from the porosity of the material of the grinding layer itself or through the provision of bores or gaps in the grinding layer. The grinding layer may be comprised of a group of segments covering the core and the gaps may be defined between segments. The core may have bores for delivering the water to the inside of the grinding layer. The water may be heated and/or pressurized for improving grinding.
    Type: Grant
    Filed: December 7, 1979
    Date of Patent: September 28, 1982
    Assignees: J. M. Voith GmbH, Dyckerhoff & Widman AG
    Inventors: Karl-Heinz Schmoller, Theodor Bahr, Ernst Bottger, Hans-Otto Henrich, Helmut Thumm, Heinz Beck