A clutch assembly having a multi-piece clutch ring
CA 2394486 C · Owner: Tesma International Inc. · Inventors: Pascoe, David Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A clutch assembly includes an outer ring having an inner peripheral surface and an inner ring seated within the outer ring and having an outer peripheral surface. A plurality of rollers is seated between the inner and outer rings for selectively binding between the inner and outer peripheral surfaces to prevent rotation of the inner disc relative to the outer disc. At least one of the inner and outer disc includes an inner sleeve mechanically coupled to an outer jacket with an interference fit such that the inner sleeve is in compression and the outer jacket is in tension whereby the tensile hoop stress is reduced between the inner and outer rings upon the binding of the rollers between 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 July 19, 2002 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2024.
- 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.