Patents by Inventor Hermann Wiese

Hermann Wiese 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).

  • Escalator drive system failure detection and brake activation
    Patent number: 7497315
    Abstract: An escalator drive assembly (30) includes a sensor that facilitates detecting when the normal drive assembly operation is interrupted, such that a brake should be activated. In one example, a sensor member (40) in the form of a flange (42) is associated with a drive pulley (34) and normally rotates in unison with the drive pulley. When there is a failure in the normal operation of the drive mechanism, however, there is a resulting relative movement between the sensor member (40) and the drive pulley (34). Such relative motion preferably activates a switch (80) that provides a signal that indicates a failure of the normal operation of the drive mechanism (30). Another example sensor includes a sensor member (202, 212) that engages a drive belt (35). If the belt (35) breaks, the sensor member (202, 212) moves to provide an indication of the broken belt condition. Various braking application modes are possible using the invention.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: March 3, 2009
    Assignee: Otis Elevator Company
    Inventors: Richard Fargo, Helmut Meyer, Frank Sansevero, Markus Hame, Hermann Wiese
  • Escalator drive system failure detection and brake activation
    Publication number: 20050173223
    Abstract: An escalator drive assembly (30) includes a sensor that facilitates detecting when the normal drive assembly operation is interrupted, such that a brake should be activated. In one example, a sensor member (40) in the form of a flange (42) is associated with a drive pulley (34) and normally rotates in unison with the drive pulley. When there is a failure in the normal operation of the drive mechanism, however, there is a resulting relative movement between the sensor member (40) and the drive pulley (34). Such relative motion preferably activates a switch (80) that provides a signal that indicates a failure of the normal operation of the drive mechanism (30). Another example sensor includes a sensor member (202, 212) that engages a drive belt (35). If the belt (35) breaks, the sensor member (202, 212) moves to provide an indication of the broken belt condition. Various braking application modes are possible using the invention.
    Type: Application
    Filed: February 7, 2003
    Publication date: August 11, 2005
    Inventors: Richard Fargo, Helmut Meyer, Frank Sansevero, Markus Hame, Hermann Wiese