Patents by Inventor Poul Spærhage Frøkjær

Poul Spærhage Frøkjær 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).

  • Wind turbine and a method of operating a wind turbine
    Patent number: 9482207
    Abstract: The invention provides a wind turbine comprising a rotatable drive train including at least one bearing (3) and a pump (4) for supply of a lubricant to the bearing (3). The wind turbine further comprises a controller for performing closed loop control of the pump (4) to provide an amount of lubricant which varies depending on an actual state of operation.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: November 1, 2016
    Assignee: Vestas Wind Systems A/S
    Inventors: Thomas Korsgaard Nielsen, Poul Spærhage Frøkjær
  • WIND TURBINE AND A METHOD OF OPERATING A WIND TURBINE
    Publication number: 20130343888
    Abstract: The invention provides a wind turbine comprising a rotatable drive train including at least one bearing (3) and a pump (4) for supply of a lubricant to the bearing (3). The wind turbine further comprises a controller for performing closed loop control of the pump (4) to provide an amount of lubricant which varies depending on an actual state of operation.
    Type: Application
    Filed: December 15, 2011
    Publication date: December 26, 2013
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Thomas Korsgaard Nielsen, Poul Spærhage Frøkjær