Patent ReferencesElevator system Elevator express priority service Elevator system Spring for a free-wheel device and assembly comprising such a spring High-rise building Patent #: 4918889 InventorsAssigneeApplicationNo. 717466 filed on 06/19/1991US Classes:187/384, Having security or priority preemption feature187/383Assigns load supports to zonesExaminersPrimary: Pellinen, A. D.Assistant: Colbert, Lawrence E. Attorney, Agent or FirmInternational ClassB66B 001/34Foreign Application Priority Data1990-06-22 JPAbstractA method of operating a common elevator in a composite building which contains a plurality of types of exclusively used floors provided separately from each other and corresponding to a plurality of objectives, and a plurality of lobby floors provided separately from each other and corresponding to the plurality of types of exclusively used floors comprises the steps of selecting either of a plurality of operation modes respectively corresponding to the plurality of types of exclusively used floors and offering an elevator service only to the corresponding exclusively used floors and to the corresponding lobby floor, determining the presence or absence of users of the elevator in the selected operation mode, and changing over the operation mode to the other operation mode among the plurality of operation modes when it is determined that there is no user. | |