Elevator system floor call registering circuit
Patent 4836336 Issued on June 6, 1989. Estimated Expiration Date: 
July 12, 2008. 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.
July 12, 2008. 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 References 3080944 3625311 3804209 Adaptive assignment of elevator car calls Patent #: 4691808 InventorAssigneeApplicationNo. 07/217833 filed on 07/12/1988US Classes:187/384, Having security or priority preemption feature187/395, HAVING CALL BUTTON WITH INDICATOR187/902CONTROL FOR DOUBLE-DECKER CARExaminersPrimary: Shoop, William M. Jr.Assistant: Duncanson, W. E. Jr. Attorney, Agent or FirmInternational ClassesB66B 1/46 (20060101)B66B 1/14 (20060101) Foreign Application Priority Data1987-07-13 CHAbstractA floor call registering circuit for an elevator system includes a keyboard at each floor for inputting the destination floors. The call registering circuit at the main stopping location permits only travels to destination floors which are allocated to a certain group of destination floors. According to an alternate embodiment, the call registering circuit is provided either with a pulse generator or with a decade keyboard. If the keyboard at the main stopping location has keys for all the destination floors, a circuit is provided which frees the destination floor calls allocated to the certain group of destination floors and blocks the destination floor calls lying outside the certain group of destination floors. | |
