Patents by Inventor Vesa Riihimäki

Vesa Riihimäki 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).

  • Protection arrangement of an electric power system
    Patent number: 8736090
    Abstract: The inventive protection arrangement of an electric power system comprises a relay arrangement (12) for measuring current, voltage or both of an electric grid (15). The relay arrangement is adapted to detect over-current, under-voltage or both. The protection arrangement comprises also a speed/load controller (16) that is in connection with the relay arrangement (12). The speed/load controller is arranged to drive a prime mover (11) of a generator (10) set as a response for the said detection. The speed/load controller (16) is connectable with said prime mover (11). In more detail the controller (16) is arranged to drive power output of the prime mover (11) to a lower level when over-current, under-voltage or both is detected.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: May 27, 2014
    Assignee: Wartsila Finland Oy
    Inventor: Vesa Riihimäki
  • PROTECTION ARRANGEMENT OF AN ELECTRIC POWER SYSTEM
    Publication number: 20120139264
    Abstract: The inventive protection arrangement of an electric power system comprises a relay arrangement (12) for measuring current, voltage or both of an electric grid (15). The relay arrangement is adapted to detect over-current, under-voltage or both. The protection arrangement comprises also a speed/load controller (16) that is in connection with the relay arrangement (12). The speed/load controller is arranged to drive a prime mover (11) of a generator (10) set as a response for the said detection. The speed/load controller (16) is connectable with said prime mover (11). In more detail the controller (16) is arranged to drive power output of the prime mover (11) to a lower level when over-current, under-voltage or both is detected.
    Type: Application
    Filed: August 6, 2010
    Publication date: June 7, 2012
    Applicant: Awek Industrial Patents Ltd Oy
    Inventor: Vesa Riihimäki