Constant velocity universal joint
CA 2229122 C · Owner: Kudo, Satoru · Inventors: Miyata, Kazunori; Kita, Kanji; Kudo, Satoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A constant velocity universal joint comprises a plurality of trunnions which are formed to be spherical, sliding surfaces which extend in a flat configuration along an axial direction of an outer cup and pairs of slipper , members having one side surfaces which are formed with recesses for making contact with spherical surfaces of the trunnions and the other side surfaces which are formed with flat surfaces to make contact with the sliding surfaces wherein the pair of slipper members are provided slidably with respect to the sliding surface and the spherical surface of the trunnion.
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 February 9, 1998 and granted July 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2020.
- 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.