Stop bar for creating a temporary safety space within an elevator hoistway
CA 2462296 C · Owner: Inventio Ag · Inventors: Kocher, Johannes; Mcgovern, Eamon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a device and procedure for creating and securing a temporary safety space within an elevator hoistway (12) such that a service or maintenance technician can work with impunity from a car (2) entering the safety space. In particular the invention provides a stop bar (20) for installation between and in engagement with opposing guide rails (12) of the hoistway (12) to prevent upward or downward movement of the car (2) or a counterweight.
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 March 29, 2004 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2026.
- 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.