Patents by Inventor Lennart Kühlmeier

Lennart Kühlmeier 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 inspecting at least one rotor blade of a wind turbine and inspection system for at least one rotor blade of a wind turbine
    Patent number: 8316716
    Abstract: A method for inspecting at least one rotor blade of a wind turbine for damage, such as subsurface blade cracks, includes the steps of: attaching at least one acoustic emission sensor to a surface of a rotor blade to be inspected, exciting oscillations in the rotor blade for a time period, measuring activity signals of the oscillations in the rotor blade with the at least one acoustic emission sensor, and detaching the at least one acoustic emission sensor from the surface of the rotor blade after the inspection. An inspection system for a rotor blade of a wind turbine is also contemplated.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: November 27, 2012
    Assignee: Vestas Wind Systems A/S
    Inventor: Lennart Kühlmeier
  • Method for condition monitoring a rotor of a wind energy plant
    Patent number: 7887292
    Abstract: A method for condition monitoring a rotor of a wind energy plant includes the steps of measuring activity signals of the blades in the rotor and establishing one or more differential values between the activity signals of different blades. The one or more differential values are used for monitoring the condition of the rotor in the wind energy plant. A wind energy plant, a cluster of wind energy plants and use hereof is also contemplated.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: February 15, 2011
    Assignee: Vestas Wind Systems A/S
    Inventor: Lennart Kühlmeier
  • Method For Condition Monitoring A Rotor Of A Wind Energy Plant
    Publication number: 20100021297
    Abstract: A method for condition monitoring a rotor of a wind energy plant includes the steps of measuring activity signals of the blades in the rotor and establishing one or more differential values between the activity signals of different blades. The one or more differential values are used for monitoring the condition of the rotor in the wind energy plant. A wind energy plant, a cluster of wind energy plants and use hereof is also contemplated.
    Type: Application
    Filed: September 16, 2009
    Publication date: January 28, 2010
    Inventor: Lennart Kühlmeier
  • Method For Inspecting At Least One Rotor Blade Of A Wind Turbine And Inspection System For At Least One Rotor Blade Of A Wind Turbine
    Publication number: 20100011862
    Abstract: A method for inspecting at least one rotor blade of a wind turbine for damage, such as subsurface blade cracks, includes the steps of: attaching at least one acoustic emission sensor to a surface of a rotor blade to be inspected, exciting oscillations in the rotor blade for a time period, measuring activity signals of the oscillations in the rotor blade with the at least one acoustic emission sensor, and detaching the at least one acoustic emission sensor from the surface of the rotor blade after the inspection. An inspection system for a rotor blade of a wind turbine is also contemplated.
    Type: Application
    Filed: September 29, 2009
    Publication date: January 21, 2010
    Inventor: LENNART KÜHLMEIER