Patents by Inventor Axel S. Pfeffer

Axel S. 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).

  • Elevator control system with sleep monitor
    Patent number: 9376289
    Abstract: An elevator control system includes a control power supply, a computing core in communication with the control power supply, a communication power supply in communication with the computing core, and a sleep monitor in communication with the control power supply, the computing core, and the communication power supply. The sleep monitor is disposed to selectively turn on/off the control power supply and the computing core, and the sleep monitor is disposed to selectively change an operating state of the communication power supply to a low voltage state.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: June 28, 2016
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Peter Herkel, Juergen Gewinner, Axel S. Pfeffer, Dirk H. Tegtmeier, Gianfranco Giannini, Michael Mann
  • Elevator Control Systems
    Publication number: 20130270045
    Abstract: An elevator control system includes a control power supply, a computing core in communication with the control power supply, a communication power supply in communication with the computing core, and a sleep monitor in communication with the control power supply, the computing core, and the communication power supply. The sleep monitor is disposed to selectively turn on/off the control power supply and the computing core, and the sleep monitor is disposed to selectively change an operating state of the communication power supply to a low voltage state.
    Type: Application
    Filed: December 28, 2010
    Publication date: October 17, 2013
    Applicant: Otis Elevator Company
    Inventors: Peter Herkel, Juergen Gewinner, Axel S. Pfeffer, Dirk H. Tegtmeier, Gianfranco Giannini, Michael Mann