Elevator installation with several self-propelled cars and at least three elevator hoistways situated adjacently
CA 2429477 C · Owner: Deplazes, Romeo · Inventors: Duenser, Thomas; Deplazes, Romeo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Elevator with one or several elevator cars (16) which move in a first vertical elevator hoistway (10) and in a second vertical elevator hoistway (12) these elevator hoistways (10, 12) having access openings (14). Arranged between the two elevator hoistways (10 12) is a vertical parking hoistway (11) which has crossing-points (15) which allow transfer of the elevator cars (16) between two adjacent hoistways (10 11, 12). The elevator has a control system (40) and driving means which enable it to move empty elevator cars (16) through the crossing-points (15) and in case of need to make the empty elevator cars (16) ready in the first elevator hoistway (10) and in the second elevator hoistway …
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 23, 2003 and granted November 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2025.
- 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.