Patents by Inventor Karl-Heinz Buehl

Karl-Heinz Buehl 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).

  • Method for filtering a liquid by the addition of a filtering aid
    Patent number: 6555014
    Abstract: A method for filtering a liquid and an apparatus for carrying out the method in which at least one container is provided from which a filtering aid is fed to a dosing device by a delivery device, and the filter aid is supplied to an injecting container and/or to a filter element via the dosing device.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: April 29, 2003
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Karl-Guenter Bremer, Karl-Heinz Buehl
  • Process for removing contaminants from cooling lubricants
    Patent number: 6099727
    Abstract: A method for separating impurities from cooling lubricants, in particular oil or oil emulsions, in which the cooling lubricant first is warmed to decrease the viscosity; then it is centrifuged in a centrifuge, after which the cleaned cooling lubricant passes to a cooling system in which it is adjusted back to normal temperature or to the required viscosity.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: August 8, 2000
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventor: Karl Heinz Buehl
  • Apparatus for separating liquid from a material
    Patent number: 5732618
    Abstract: A system for separating liquid from material, particularly from metal chips, which comprises a housing with a material inlet opening, a material discharge opening, a spiral-shaped pressure member disposed in the housing, and a plurality of openings in the housing for removing extracted liquid.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: March 31, 1998
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventor: Karl-Heinz Buehl