Patents by Inventor Ilkka Lempiö

Ilkka Lempiö 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).

  • Method for braking a traction sheave elevator, and traction sheave elevator
    Patent number: 6631789
    Abstract: A method and apparatus for braking a tractor sheave elevator. In an emergency situation, the elevator braking is complimented by using a second braking device not connected to the traction sheave. A secondary braking can be accomplished by applying a braking force to the elevator ropes or guide rail. If the secondary brake is applied first, the ropes will not slip on the traction sheave when the primary brake is applied. Alternatively, slippage may be allowed to occur in order to distribute the heat produced by braking.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: October 14, 2003
    Assignee: Kone Corporation
    Inventors: Johannes de Jong, Esko Aulanko, Ilkka Lempiö