Traffic-controlled system for operating elevator doors
CA 2097364 C · Owner: Tyni, Tapio · Inventors: Tyni, Tapio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A procedure and an apparatus are disclosed for controlling the doors of an elevator. According to the invention, a sensor detects the presence of elevator passengers in the lobby, and a detecting device observes the occurences of passengers moving from the elevator car into the lobby and from the lobby into the elevator car while a motion detector observes the movements of the passengers in the car. The passenger data thus obtained are utilized in the process of making a decision regarding the closing of the doors.
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 May 31, 1993 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2015.
- 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.