Patents by Inventor EDGAR PRELLWITZ

EDGAR PRELLWITZ 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).

  • Monitoring of a sealing arrangement, particularly of a gas compressor or gas expander
    Patent number: 8540249
    Abstract: To monitor a sealing arrangement for sealing a shaft relative to a stationary part having a shaft sealing ring with a shaft conductor surface arrangement, a stator sealing ring with a stator conductor surface arrangement that is insulated from the shaft conductor surface arrangement, and a capacitive measuring arrangement, the stator conductor surface arrangement has a first stator conductor surface and at least a second stator conductor surface that is electrically insulated from the latter, and the shaft conductor surface arrangement has at least one shaft conductor surface, and the measuring arrangement has a device for detecting an electric capacitance between two stator conductor surfaces of the stator conductor surface arrangement, the electric capacitance between two stator conductor surfaces of the stator conductor surface arrangement is detected during operation.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: September 24, 2013
    Assignee: MAN Diesel & Turbo SE
    Inventor: Edgar Prellwitz
  • Monitoring of a Sealing Arrangement, Particularly of a Gas Compressor or Gas Expander
    Publication number: 20100171269
    Abstract: To monitor a sealing arrangement for sealing a shaft relative to a stationary part having a shaft sealing ring with a shaft conductor surface arrangement, a stator sealing ring with a stator conductor surface arrangement that is insulated from the shaft conductor surface arrangement, and a capacitive measuring arrangement, the stator conductor surface arrangement has a first stator conductor surface and at least a second stator conductor surface that is electrically insulated from the latter, and the shaft conductor surface arrangement has at least one shaft conductor surface, and the measuring arrangement has a device for detecting an electric capacitance between two stator conductor surfaces of the stator conductor surface arrangement, the electric capacitance between two stator conductor surfaces of the stator conductor surface arrangement is detected during operation.
    Type: Application
    Filed: December 18, 2009
    Publication date: July 8, 2010
    Applicant: MAN TURBO AG
    Inventor: EDGAR PRELLWITZ