Elevator system
CA 1185714 A · Owner: Westinghouse Electric Corporation · Inventors: Kirsch, Andrew F.; Eichler, Kenneth M.; Mandel, Alan F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elevator system having a plurality of elevator cars and supervisory control for directing their movement in a building to efficiently serve the floors therein. The supervisory control divides the work load uniformly among the elevator cars by periodically assigning clearing and, reassigning service directions from the floors to the cars according to a predetermined strategy. The predetermined strategy accords special treatment for assigning the service directions from floors at which each oar will stop and depart in a predetermined direction due to register car calls. The strategy includes special limitations on such car call related assignments to improve elevator service with one …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.