Patents by Inventor Axel Steffen Pfeffer

Axel Steffen Pfeffer 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).

  • CONTROLLING MOVEMENT OF AN ELEVATOR CAR OF AN ELEVATOR SYSTEM
    Publication number: 20210094795
    Abstract: Elevator system (2) comprising: a hoistway (4) extending between a plurality of landings (8); at least one elevator car (6) configured for moving along the hoistway (4) between the plurality of landings (8); an elevator drive (5) configured for moving the at least one elevator car (6) along the hoistway (4); and an elevator control (9) configured for controlling the elevator drive (5). The elevator control (9) is configured for selectively operating in a normal operation mode or in a maintenance mode.
    Type: Application
    Filed: March 31, 2020
    Publication date: April 1, 2021
    Inventors: Alexander Paetow, Axel Steffen Pfeffer, Peter Herkel, Mustapha Toutaoui