Patents by Inventor Axel Steffen Gerwing

Axel Steffen Gerwing 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).

  • Hoistway intrusion detection
    Patent number: 6550585
    Abstract: Elevator, exhibiting an elevator shaft (34) and a car (32) which is movably provided inside the elevator shaft (34), and a safety installation (2), which is designed in such a way that it can take the elevator out of service in a dangerous situation, characterized by the fact that the safety installation (2) is equipped with a shaft monitoring device.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: April 22, 2003
    Assignee: Otis Elevator Company
    Inventors: Wolfgang M. Schoppa, Axel Steffen Gerwing