Tubular lockset
CA 2289830 A1 · Owner: Huaig, Chao-Ming · Inventors: Huaig, Chao-Ming
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tubular lockset according to the present invention mainly comprises a lock case, two, assembling plates, an actuating wheel a fixing plate and a moving shell. The lock case, contains a dead bolt therein and has a slot at its bottom for a pulling plate to extend, therethrough. The pulling plate comprises two pairs of up-right protrusions for meshing, with the teeth of the actuating wheel so as to provide mutual movement. The assembling, plates include two plates, wherein each assembling plate has two round holes and an, elliptical hole. The elliptical hole is used for restricting the actuating wheel to move in a, linear direction. A fixing plate has a hole for the insertion of 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 November 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 15, 2021.
- 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.