Patents by Inventor Petteri Valjus

Petteri Valjus 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, traction sheave elevator and use of an emergency power supply
    Publication number: 20020125079
    Abstract: The invention concerns a method for braking a traction sheave elevator. To stop the elevator in the event of an emergency, the braking of the elevator is complemented by using a braking device not comprised in the drive machine. The invention also concerns a traction sheave elevator provided with a braking device not comprised in the drive machine and designed to improve the efficiency of emergency stopping. The maximum force decelerating the elevator and generated by the braking device equals about half the weight of the nominal load of the elevator.
    Type: Application
    Filed: March 6, 2002
    Publication date: September 12, 2002
    Inventors: Seppo Mattlar, Petteri Valjus, Johannes De Jong