Reversible driven pulley
CA 2328432 C · Owner: Cvtech R&D Inc. · Inventors: Chamberland, Rene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The driven pulley (10) is used in a continuously variable transmission (CVT). It comprises a main shaft (12), a fixed flange (14) and a movable flange (16). The first cam system comprises a cam plate (22) provided with cam surfaces , (24), and corresponding cam followers (28). The second cam system also comprises a cam plate (40), provided with cam surfaces (42) and corresponding , cam followers (46). During a normal forward rotation of the driven pulley (10), corresponding to a forward motion of a vehicle the first cam system is , automatically disabled and the position of the movable flange (16) is governed by the second cam system. However, under motor-braking conditions the first , …
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 April 16, 1999 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 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.