Patents by Inventor Esben Rotboll

Esben Rotboll 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).

  • Drive for an elevator door with a displacement curve adapted to the air flows in the shaft
    Patent number: 7946392
    Abstract: A method of operating an elevator installation and the elevator installation include elevator doors actuated by an elevator drive according to a travel curve. At least one sensor unit detects pressure relationships and/or air flows. An evaluating unit determines a travel curve, which is optimal with respect to the detected pressure relationships and/or air flows, from a plurality of travel curves.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: May 24, 2011
    Assignee: Inventio AG
    Inventor: Esben Rotboll
  • DRIVE FOR AN ELEVATOR DOOR WITH A DISPLACEMENT CURVE ADAPTED TO THE AIR FLOWS IN THE SHAFT
    Publication number: 20090050416
    Abstract: A method of operating an elevator installation and the elevator installation include elevator doors actuated by an elevator drive according to a travel curve. At least one sensor unit detects pressure relationships and/or air flows. An evaluating unit determines a travel curve, which is optimal with respect to the detected pressure relationships and/or air flows, from a plurality of travel curves.
    Type: Application
    Filed: January 6, 2006
    Publication date: February 26, 2009
    Inventor: Esben Rotboll
  • Safety device for elevators
    Patent number: 7398863
    Abstract: A safety device brakes an elevator car with a guide rail exhibiting an oblong guide flange. The safety device includes a base carrying a retaining element and an abutment with the guide flange positioned therebetween. A mechanism squeezes, when braking, a braking element blocking roller between the guide flange and the abutment. The mechanism, co-operating with an electromagnet, moves the braking element in a controlled way between different positions associated with different operating conditions of the safety device.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: July 15, 2008
    Assignee: Inventio AG
    Inventors: Christoph Liebetrau, Ruedi Stocker, Esben Rotboll
  • Safety device for elevators
    Publication number: 20040112683
    Abstract: A safety device brakes an elevator car with a guide rail exhibiting an oblong guide flange. The safety device includes a base carrying a retaining element and an abutment with the guide flange positioned therebetween. A mechanism squeezes, when braking, a braking element blocking roller between the guide flange and the abutment. The mechanism, co-operating with an electromagnet, moves the braking element in a controlled way between different positions associated with different operating conditions of the safety device.
    Type: Application
    Filed: September 22, 2003
    Publication date: June 17, 2004
    Inventors: Christoph Liebetrau, Ruedi Stocker, Esben Rotboll
  • Lift cage, lift with the lift cag and method of assembling the lift
    Publication number: 20040094370
    Abstract: The invention relates to a lift cage, a lift with the lift cage and a method of assembling the lift. The lift cage comprises a three-dimensional body for receiving persons or articles to be conveyed and has a support body for accepting all forces acting on the three-dimensional body during the conveying of the persons or articles. The three-dimensional body is suspended in the support body. The support body comprises two side frames which are connected together by way of at least one top frame in moment-stiff manner.
    Type: Application
    Filed: August 20, 2003
    Publication date: May 20, 2004
    Inventors: Esben Rotboll, Christoph Liebetrau