Pulley wheel
CA 2287272 A1 · Owner: Chuang, William · Inventors: Chuang, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pulley wheel has a first ring (12), a second ring (13) and a rib (11) integrally, formed between the first and the second rings (12,13). The second ring (13) has a, diameter large enough to secure a bearing assembly therein. Both edges of the second ring (13) are bent to form a flange (131) so that the bearing is securely held, in the wheel by the flanges (131) of the second ring (13).
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 October 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 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.