Rekeyable lock assembly and method of operation
CA 2495269 C · Owner: Chong, Gerald B. · Inventors: Chong, Gerald B.; Armstrong, Steven
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rekeyable lock cylinder (10) includes a cylinder body (12) with a plug body (14) and carrier (90) sub-assembly disposed therein. The plug body (14) includes a plurality of spring-loaded pins (113) and the carrier assembly (90) includes a plurality of racks (92) for engaging the pins (113) to operate the lock cylinder (10). The racks (92) and pins (113) move in a transverse direction, in response to insertion of a first valid key (160) into the lock cylinder (10), to unlock the lock cylinder (10). The carrier (90) moves in a longitudinal direction, in response to insertion of a tool (162) in a toolreceiving aperture (54), from an operating position to a rekeying position. In the …
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 September 22, 2003 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 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.