Patents by Inventor Jörg ROHLFSEN

Jörg ROHLFSEN 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 method for controlling an access point in a closed area of a wind turbine
    Patent number: 10415751
    Abstract: A wind turbine having a nacelle with a stationary region and a rotor, at least one blocking unit for blocking the rotor, and an access control system is provided. The access control system controls a locking of at least one access door to at least one closed-off region in the wind turbine depending on a blocking of the rotor by means of the least one blocking unit. The access control system has a key transfer system and a hydraulic control unit for controlling the blocking unit. The key transfer system has a hydraulic key unit for preventing an unintentional activation of the hydraulic unit and an access door key unit for locking or unlocking the access door.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: September 17, 2019
    Assignee: Wobben Properties GmbH
    Inventors: Peter Geiken, Jörg Rohlfsen, Reiner Schmees
  • WIND TURBINE AND METHOD FOR CONTROLLING AN ACCESS POINT IN A CLOSED AREA OF A WIND TURBINE
    Publication number: 20180224063
    Abstract: A wind turbine having a nacelle with a stationary region and a rotor, at least one blocking unit for blocking the rotor, and an access control system is provided. The access control system controls a locking of at least one access door to at least one closed-off region in the wind turbine depending on a blocking of the rotor by means of the least one blocking unit. The access control system has a key transfer system and a hydraulic control unit for controlling the blocking unit. The key transfer system has a hydraulic key unit for preventing an unintentional activation of the hydraulic unit and an access door key unit for locking or unlocking the access door.
    Type: Application
    Filed: September 16, 2015
    Publication date: August 9, 2018
    Inventors: Peter GEIKEN, Jörg ROHLFSEN, Reiner SCHMEES