Elevator system
US4511017A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1983 |
| Grant date | Apr 16, 1985 |
| Priority date | — |
| Expiry date | Sep 20, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system, and method of operating same, in which emergency back-up service is provided all floors of a building when normal service is degraded, such as due to a dispatcher malfunction, a communication failure between the elevator cars of a bank of cars and a group supervisory controller or dispatcher, failure of the hall call circuits, and the like. When the emergency service is provided, a different initial block of floors is assigned to each elevator car, and as each elevator car completes a round trip its block of assignments are revised in a rotational manner. Thus, all floors are guaranteed service as long as at least one elevator car is operational.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.