Delay action electronic timer lock with automatic cancellation cam
CA 2017150 C · Owner: Legault, Claude · Inventors: Legault, Claude; Deguire, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A delay action time lock having a lock housing in which a spring action bolt is movably connected. A retracting cam is provided for engagement with a bolt retracting lever for retracting a locking end of the bolt in the housing by means of a key inserted in a key cylinder and after an electronic timer has initiated a first preset time delay count. A motor actuated support cam is provided for normally supporting the retracting lever in a disengaged position with the retracting cam. After the preset time delay count the bolt retracting, lever is liberated to be engaged by the retracting cam. After a second preset time delay or upon the actuation of a microswitch by …
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 18, 1990 and granted October 5, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2012.
- 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.