Patents by Inventor Hannu AHRNBERG

Hannu AHRNBERG 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).

  • Supplemental elevator safety system
    Patent number: 8869945
    Abstract: The invention relates to a safety arrangement of an elevator system and to a method for ensuring safety in an elevator system. The safety arrangement comprises at least one mechanical stopping appliance and the control of the safety arrangement comprises at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car. In the method for ensuring safety in an elevator system at least one mechanical stopping appliance is fitted to the safety arrangement of the elevator system and at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car is set for the control of the safety arrangement.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: October 28, 2014
    Assignee: Kone Corporation
    Inventors: Ari Härkönen, Sakari Korvenranta, Ari Kattainen, Timo Syrman, Hannu Ahrnberg, Risto Jokinen
  • ELEVATOR SYSTEM
    Publication number: 20090178889
    Abstract: The invention relates to a safety arrangement of an elevator system and to a method for ensuring safety in an elevator system. The safety arrangement comprises at least one mechanical stopping appliance and the control of the safety arrangement comprises at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car. In the method for ensuring safety in an elevator system at least one mechanical stopping appliance is fitted to the safety arrangement of the elevator system and at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car is set for the control of the safety arrangement.
    Type: Application
    Filed: February 17, 2009
    Publication date: July 16, 2009
    Applicant: KONE CORPORATION
    Inventors: Ari HARKONEN, Sakari KORVENRANTA, Ari KATTAINEN, Timo SYRMAN, Hannu AHRNBERG, Risto JOKINEN