Patents by Inventor Huanmin Wei

Huanmin Wei 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: 8342033
    Abstract: The invention relates to a method for monitoring the bending of a shaft, particularly a shaft in a mixing kneader, the shaft having a bearing at least on one side. In a first step, the deviation of the shaft from the radial position is measured on at least one position different from the bearing of the shaft. In a further step, a reference value is optionally determined from the measured deviation from the radial position. In a third step, the deviation from the radial position as measured in the first step or the reference value found in the second step is compared with a predetermined limit value.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: January 1, 2013
    Assignee: BASF SE
    Inventors: Huanmin Wei, Wilfried Heide, Annemarie Hillebrecht, Oskar Stephan, Asif Karim
  • Publication number: 20120071613
    Abstract: The invention relates to a mixing kneader comprising at least two shafts (2,3) configured as hollow shafts, on whose surfaces kneading bars (4) are disposed on elements (5). The construction of the shafts is selected in such a way that the resonant frequencies of the shafts have a separation of at least 5% from the excitation frequencies. At least one of the shafts is preferably flowed through by a temperature-control medium, the inlet being disposed on one side and the outlet on the other side of the shaft. The mixing kneader preferably comprises at least one orifice above the shafts which is configured as a dome, the dome being closed by a displacer (22). In addition, at least one orifice for product withdrawal is provided, whose orifice cross section is adjustable during operation.
    Type: Application
    Filed: October 28, 2011
    Publication date: March 22, 2012
    Applicant: BASF SE
    Inventors: Uwe Stueven, Leo Van Miert, Dominicus van Esbroeck, Oskar Stephan, Annemarie Hillebrecht, Huanmin Wei
  • Patent number: 8070351
    Abstract: The invention relates to a mixing kneader comprising at least two shafts (2,3) configured as hollow shafts, on whose surfaces kneading bars (4) are disposed on elements (5). The construction of the shafts is selected in such a way that the resonant frequencies of the shafts have a separation of at least 5% from the excitation frequencies. At least one of the shafts is preferably flowed through by a temperature-control medium, the inlet being disposed on one side and the outlet on the other side of the shaft. The mixing kneader preferably comprises at least one orifice above the shafts which is configured as a dome, the dome being closed by a displacer (22). In addition, at least one orifice for product withdrawal is provided, whose orifice cross section is adjustable during operation.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: December 6, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Uwe Stueven, Leo Van Miert, Dominicus van Esbroeck, Oskar Stephan, Annemarie Hillebrecht, Huanmin Wei
  • Publication number: 20100171490
    Abstract: The invention relates to a method for monitoring the bending of a shaft, particularly a shaft in a mixing kneader, the shaft having a bearing at least on one side. In a first step, the deviation of the shaft from the radial position is measured on at least one position different from the bearing of the shaft. In a further step, a reference value is optionally determined from the measured deviation from the radial position. In a third step, the deviation from the radial position as measured in the first step or the reference value found in the second step is compared with a predetermined limit value.
    Type: Application
    Filed: June 10, 2008
    Publication date: July 8, 2010
    Applicant: BASF SE
    Inventors: Huanmin Wei, Wilfried Heide, Annemarie Hillebrecht, Oskar Stephan, Asif Karim
  • Publication number: 20080080300
    Abstract: The invention relates to a mixing kneader comprising at least two shafts (2,3) configured as hollow shafts, on whose surfaces kneading bars (4) are disposed on elements (5). The construction of the shafts is selected in such a way that the resonant frequencies of the shafts have a separation of at least 5% from the excitation frequencies. At least one of the shafts is preferably flowed through by a temperature-control medium, the inlet being disposed on one side and the outlet on the other side of the shaft. The mixing kneader preferably comprises at least one orifice above the shafts which is configured as a dome, the dome being closed by a displacer (22). In addition, at least one orifice for product withdrawal is provided, whose orifice cross section is adjustable during operation.
    Type: Application
    Filed: September 28, 2005
    Publication date: April 3, 2008
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Uwe Stueven, Leo Van Miert, Dominicus van Esbroeck, Oskar Stephan, Annemarie Hillebrecht, Huanmin Wei