Locking device for a detachable skate of sports shoe
CA 2483793 A1 · Owner: Wang, Chenwen · Inventors: Chang, Chuncheng; Chiu, Hongyoung; Wang, Chenwen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a latching device for a detachable skate chassis of a sneaker which includes a rotatable hook, an elastic member a control rod and a , clamping arm. The rotatable hook is disposed on the detachable skate chassis so that it can clamp on the clamping wall of the sole of the sneaker releasably. The elastic member is used to exert a bias elastic force on the rotable hook, and the control rod is used to rotate the rotatable hook against the biasing elastic force of the elastic member. The device is assembled or disassembled easily.
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 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 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.