Door locking device
CA 2059586 A1 · Owner: Anderson, Joseph Axel · Inventors: Anderson, Joseph Axel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A door lock for preventing unauthorized ingress and solely actuable from the inside of a room. The lock includes a lock bar, pivotally anchored to the outer edge of the door and a, jamb plate, anchored to the adjacent jamb and having an elongated vertical aperture for door locking engagement by the lock bar free end portion when the door is closed. A stem is slidably mounted on or within the lock bar to take a blocking position protruding beyond the free end portion of the lock bar and releasably extending through the jamb plate aperture. When the stem is engaged into the jamb plate aperture, the lock bar is prevented from pivoting because the stem has no clearance to do so within 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 January 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2014.
- 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.