Elevator system
First Claim
1. A method of providing emergency elevator service for each floor of a building having a bank of elevator cars and a plurality of floors, including a main floor, comprising the steps of:
- pre-assigning a predetermined different pattern of floors to each elevator car of the bank,and revising the assignment for each car after a predetermined occurrence.
2 Assignments
0 Petitions
Accused Products
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.
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Citations
21 Claims
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1. A method of providing emergency elevator service for each floor of a building having a bank of elevator cars and a plurality of floors, including a main floor, comprising the steps of:
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pre-assigning a predetermined different pattern of floors to each elevator car of the bank, and revising the assignment for each car after a predetermined occurrence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An elevator system comprising:
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a building having a plurality of floors including a main floor, a bank of elevator cars mounted in said building to serve the floors therein, means responsive to a predetermined condition for initiating an emergency operating mode of the elevator system, and means for implementing said emergency operating mode, including means for assigning a predetermined different pattern of floors to each elevator car, means for detecting a predetermined occurrence relative to each elevator car, and means responsive to each such detection for revising the associated car'"'"'s pattern of floor assignments. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification