Latch lock
CA 2434017 A1 · Owner: Globe Union Industrial Corp. · Inventors: Lin, Shih-Hung
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved structure for a latch lock that opens or closes a door without deadlocking it essentially comprised of a front body and a rear body each provided with a round plate locked into to each other with the latch bolt inside, a recess of a door panel being placed in a space defined by both locked bodies;, a rotation rod with a flange being each adapted to the front and the rear bodies, having one end of the rotation rod inserted into a bolting hole in the latch bolt, and the other end inserted with a reducing spring and a positioning ring for the, rotation rod to be respectively inserted into the front and the rear bodies to allow spacing adjustment as desired to compromise door …
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 June 30, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 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.