Elevator swing car service of interrise hall calls
CA 2136482 A1 · Owner: Otis Elevator Company · Inventors: Bittar, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an elevator system having a low rise group of floors and a high rise group of floors and a swing car having doors and car call buttons that enable it to operate in both the low rise group of floors and the high rise group of floors, interise hall calls made within one of said group of floors for service within another of said group of floors are assigned to the swing car for response. In one embodiment the call, is assigned to the first car approaching the call in the right direction; in another embodiment the call, is assigned in accordance with ordinary hall call assignment logic.
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
- Filed November 23, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2016.
- 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.