Elevator control system
Patent 5042620 Issued on August 27, 1991. Estimated Expiration Date: 
September 12, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 12, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesElevator system having microprocessor-based door operator Information device of elevator Signal transmission method and system in elevator equipment Patent #: 4872532 InventorsAssigneeApplicationNo. 406290 filed on 09/12/1989US Classes:187/382, Shared by plural load supports187/391WITH MONITORING, SIGNALLING, AND INDICATING MEANSExaminersPrimary: Pellinen, A. D.Assistant: Duncanson, W. E. Jr. Attorney, Agent or FirmInternational ClassB66B 001/18Foreign Application Priority Data1988-09-20 JPAbstractA control system for an elevator has a plurality of elevator information generation devices each of which has an information output unit which outputs elevator information to an elevator controller and also to at least one display controller which generates one or more on elevator displays. There are a plurality of display controllers, these are preferably connected to the information output units by a common transmission path. There may be a plurality of elevator controllers, when there are a plurality of elevator cabs, and those elevator controllers may all be connected to the common transmission path. There is then a supervisor controller for controlling the elevator controllers. | |
