U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Elevator system having dynamic sector assignments

Patent 5317114 Issued on May 31, 1994. Estimated Expiration Date: Icon_subject November 27, 2011. 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

3891064

Variable elevator up peak dispatching interval
Patent #: 4305479
Issued on: 12/15/1981
Inventor: Bittar ,   et al.

Dynamically reevaluated elevator call assignments
Patent #: 4323142
Issued on: 04/06/1982
Inventor: Bittar

Relative system response elevator call assignments
Patent #: 4363381
Issued on: 12/14/1982
Inventor: Bittar

Control apparatus for elevators
Patent #: 4523665
Issued on: 06/18/1985
Inventor: Tsuji

Demand estimation apparatus
Patent #: 4524418
Issued on: 06/18/1985
Inventor: Araya ,   et al.

Contiguous floor channeling with up hall call elevator dispatching
Patent #: 4792019
Issued on: 12/20/1988
Inventor: Bittar ,   et al.

Contiguous floor channeling elevator dispatching
Patent #: 4804069
Issued on: 02/14/1989
Inventor: Bittar ,   et al.

Queue based elevator dispatching system using peak period traffic prediction Patent #: 4838384
Issued on: 06/13/1989
Inventor: Thangavelu

Inventors

Assignee

Application

No. 799572 filed on 11/27/1991

US Classes:

187/383, Assigns load supports to zones187/398Indicates particular one of plural load supports responding

Examiners

Primary: Stephan, Steven L.
Assistant: Nappi, Robert E.

Attorney, Agent or Firm

International Classes

B66B 001/18
B66B 001/20

Abstract

Method and apparatus is disclosed for operating an elevator system that includes a group of elevator cars servicing a plurality of floor landings divided into Sectors. The method includes the steps of, with a controller associated with each elevator car of the group, (a) determining when the elevator car has reached a Turn Around Point for returning the elevator car to a lobby; (b) initiating travel to the lobby; and (c) determining when the elevator car has reached a predetermined Sector Assignment Fixation Point. After reaching the predetermined Sector Assignment Fixation Point, the method further includes the steps of (d) communicating Sector-related information with other controller of other elevator cars of the group; and (e) based upon the communication, assigning to the elevator car a next Sector to be serviced after arrival at the lobby. A round-robin arbitration technique is disclosed for assigning Sectors among the elevator cars.

Other References

  • 1977 "Lift Supervisory Control Systems", G. C. Barney et al. Lift-Traffic Analysis Design and Control, Pub. P. Peregrinus Ltd., Chap. 3, pp. 85-14
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